(Download) BSNL Junior Engineer (JE) Solved Question Paper - 2016
"held on 25 Sep 2016 | Morning shift"

EXAM DATE : 25092016
EXAM NAME : BSNL Online Examination 2016
TOTAL MARKS : 200
EXAM START TIME : 10:00:00
EXAM DURAITON : 03:00:00
TOTAL NO OF QUESTIONS : 200

Question 1.Pick the Synonym for the word "SUSTAINED"

Options:

a) sporadic
b) confirmed
c) steady
d) supported

Correct Answer: steady

Question 2.A sentence is given in the Direct/Indirect form. Out of the four alternatives suggested, select the one which best expresses the same sentence in the Indirect/Direct form:

"Please open my bag and check if my Physics notebook is there" Rakesh said to Rajesh.

Options:
a) Rakesh requested Rajesh to open his bag and check if his Physics notebook was there.
b) Rakesh requested Rajesh to open his bag and see if his Physics notebook is there.
c) Rakeshasked Rajesh to open his bag and check if his Physics notebook is there.
d) Rakeshordered Rajesh to open his bag and see if his Physics notebook was there.

Correct Answer: Rakesh requested Rajesh to open his bag and check if his Physics notebook was there.

Question 3.Mark the most appropriate substitute to fill the blanks in the given description :

You have to leave your shoes ______________the door when you enter the house.

Options:
a) In
b) Over
c) To
d) By

Correct Answer: By

Question 4.Change the following sentences into passive voice :

They greet me cheerfully every morning.

Options:
a) I am greeted cheerfully by them every morning.
b) I am being greeted cheerfully by them every morning.
c) Cheerful greeting is done by them every morning to me.
d) Every morning I was greeted cheerfully.

Correct Answer: I am greeted cheerfully by them every morning.

Question 5.The first two words are related in a particular manner. Select the word from given choices, which is related to third one in the same manner : DISTANCE:MILE ::liquid

Options:
a) water
b) gram
c) scale
d) litre

Correct Answer: litre

Question 6.Choose the word which is the exact OPPOSITE of the given words:

AFFLUENT

Options:
a) affected
b) uneducated
c) rural
d) poor

Correct Answer: poor

Question 7.Choose the appropriate word in the blank from the given alternatives.

On entering the home , he found all jewels ___________.

Options:
a) steal
b) steals
c) stealing
d) stolen

Correct Answer: stolen

Question 8.Change the direct narration to indirect narration :

"Please don't go away", she said.

Options:
a) She told me to go away.
b) She requested me not to go away.
c) She begged that I not go away.
d) She said to please her and not go away.

Correct Answer: She requested me not to go away.

Question 9.Select one word which is closest in meaning to the statement in the question : That which cannot be read

Options:
a) Negligible
b) Illegible
c) Ineligible
d) Incorrigible

Correct Answer: Illegible

Question 10.Four parts of a sentence (P/Q/R/S) are given. Arrange them in the right order to produce a correct sentence :
even when/are well informed/people engaged in a conversation/their conversation may be dull

Options:
a) QSPR
b) PRQS
c) SRQP
d) SQRP

Correct Answer: PRQS

Question 11.Excess of amino acids are broken down to form urea in

Options:
a) kidney
b) liver
c) spleen
d) rectum

Correct Answer: liver

Question 12.The science dealing with studuy of tumor

Options:
a) cosmology
b) oncology
c) Ornithology
d) odontology

Correct Answer : oncology

Question 13.Indian National Song is taken from ___________

Options:
a) Geethanjali
b) Durgesh Nandini
c) Bharat Vidatha
d) Anand Math

Correct Answer: Anand Math

Question 14.Uber Cup is associated with

Options:
a) Tennis
b) Hockey
c) Football
d) Badminton

Correct Answer: Badminton

Question 15.BSNL free roaming launched w.e.f.15.6.2015 is applicable on

Options:
a) Outgoing calls
b) Incoming calls
c) Broadband
d) Both incoming and outgoing calls

Correct Answer: Incoming calls

Question 16.Which space probe of NASA recently made the closest approach to Pluto?

Options:
a) New Horizon
b) Pioneer 9
c) Helios
d) Cosmos

Correct Answer: New Horizon

Question 17.Indianorigin Sunita Williams was recently chosen by NASA for the following assignment

Options:
a) To fly to the International Space Station
b) To fly NASA's first commercial space vehicle
c) For spacewalk at ISS
d) For Mars human landing

Correct Answer: To fly NASA's first commercial space vehicle

Question 18.Which city has topped the Swachh Bharat rankings among 476 cities in the country as per the survey conducted by Ministry of Urban Development ?

Options:
a) Mysuru
b) Ahmedabad
c) Chandigarh
d) Chennai

Correct Answer: Mysuru

Question 19.Who was the first Indian to make a movie

Options:
a) H. S. Bhatwadekar
b) Ardeshir Irani
c) Dhundiraj Govind Phalke
d) V. Shantaram

Correct Answer: H. S. Bhatwadekar

Question 20.The 'Armed Forces Flag Day' is observed every year on?

Options:
a) 7Dec
b) 24Jan
c) 30Oct
d) 30Jan

Correct Answer: 7Dec

Question 21.

Options:
a) 1,6
b) 1,6
c) 1,6
d) 1,6

Correct Answer: 1,6

Question 22.

Options:
a) 0
b) 1
c) u
d) e^u

Correct Answer: 1

Question 23.

Options:

Question 24.The minimum distance from the point (4, 2) to the Parabola y² = 8 x will be

a) √2
b) 2√2
c) 2
d) 3√2

Correct Answer: 2√2

Question 25.Identify the true statement

Options:
a) Force is vector quantity and Time Period is scalar quantity
b) Force is scalar and Time Period is scalar quantity
c) Force is vector quantity and Time Period is vector quantity
d) Force is scalar quantity and Time Period is vector quantity

Correct Answer: Force is vector quantity and Time Period is scalar quantity

Question 26.The angle θ between two lines having slopes m₁ and m₂ is given by

Options:
a) tanθ=(m1m2) /m1m2
tanθ=(m1m2) /m1m2
b) tanθ=(m1m2)/1+m1m2
tanθ=(m1m2) /1+m1m2
c) tanθ=(m1+m2) /m1m2
tanθ=(m1+m2) /m1m2
d) tanθ=(m1m2)/m1+m2
tanθ=(m1m2) /m1+m2

Correct Answer: tanθ=(m1m2)/1+m1m2
tanθ=(m1m2)/1+m1m2

Question 27.The distance d between two lines y1=mx+c1 and y2=mx+c2 is given by

Options:
a) d=|c1c2|/(√1+m2) d=|c1c2|/(√1+m2)
b) d=|c1+c2|/(√1+m2) d=|c1+c2|/(√1+m2)
c) d=|c1c2|/(√1+m2)d=|c1c2|/(√1+m2)
d) None of these

Correct Answer: d=|c1c2|/(√1+m2)d=|c1c2|/(√1+m2)

Question 28.If u = x4 + yx3 + 3x2.y2 + 3x2y, Find ∂u / ∂x

Options:
a) 4x³ + 6xy² + 6xy
b) 12x² + 6y² + 6y
c) x³ + y³ + 3xy
d) x³ + 6xy² + 6xy

Correct Answer: 4x³ + 6xy² + 6xy

Question 29.Find the differentiation of cos^-1 x

Options:

Question 30.The Fourier series of an even periodic function will consist of _______________ terms only

Options:
a) cosine term
b) sine terms
c) cosine and sine term
d) DC and cosine terms

Correct Answer: cosine term

Question 31.0.4 % of 400 is equal to

Options:
a) 16
b) 1.6
c) 0.16
d) 0.016

Correct Answer : 1.6

Question 32.sin(α β)=

Options:
a) sin(α)cos(β) + cos(α)sin(β)
b) sin(α)cos(β) cos(α)sin(β)
c) cos(α)cos(β) sin(α)sin(β)
d) cos(α)cos(β) + sin(α)sin(β)

Correct Answer: sin(α)cos(β) cos(α)sin(β)

Question 33.The maximum value of f(x) = (1+cos x) sin x is

Options:
a) 3
b) 3√3
c) 4
d) 3√3/4

Correct Answer: 3√3/4

Question 34.

Question 35.Absolute value of z = x + iy is

Options:
a) |z|= √(x²y²)
b) |z|= √(x²/y²)
c) |z|= √(x² y²)
d) |z|= √(x²y²)

Correct Answer: |z|= √(x2y2)

Question 36.Line x+y=4

Options:
a) Never passes through (0,0)
b) Always passes through (0,0)
c) Meets Y axis at y=0
d) Always passes through (0,0)

Correct Answer: Never passes through (0,0)

Question 37.The equation of the straight line which makes intercepts (7/3) and 2/5 on x and y axis respectively is

Options:
a) 6x35y+ 14=0
b) 35x6y+ 14=0
c) 6x35y+ 14=0
d) none

Correct Answer: none

Question 38.

Question 39.The dimension of gravitational constant G is

a) ML^-2T^-3
b) ML^-2
c) ML^-2T^-2
d) M1L^-3T^-2

Correct Answer: M1L^-3T^-2

Question 40.An automobile travels 72Km/hr towards a high wall. The driver sounds a horn of frequency 124 cycle/sec. What is the frequency of the reflected sound heard by the driver? (Velocity of sound = 330 m/sec)

Options:
a) 124 cycles /sec
b) 132 cycles/sec
c) 140 cycles /sec
d) 148 cycles/sec

Correct Answer: 140 cycles /sec

Question 41.The atomic weight and atomic number of an element are A and Z respectively. The number of neutrons in the atom of that element is

a) A
b) Z
c) Z
d) AZ

Correct Answer: AZ

Question 42.γ rays areγ Career

Options:
a) High energy electrons
b) Low energy electrons
c) High energy electromagnetic waves
d) High energy positrons

Correct Answer: High energy electromagnetic waves

Question 43.The maximum number of electrons that can be accommodated by p – sub shell is p

Options:
a) 10
b) 2
c) 6
d) 14

Correct Answer: 6

Question 44.A instrument has sensitivity of 1000 ohms/volt. On the 100 volt scale. The instrument will have internal resistance of

Options:
a) 10 ohms
b) 10000 ohms
c) 1000 ohms
d) 100000 ohms

Correct Answer: 100000 ohms

Question 45.In two wattmeter method of measuring 3phase power, power factor is 0.5 , then one of the wattmeter will read

Options:
a) W/2
b) 0
c) 0.577 W
d) 1.414 W

Correct Answer: 0

Question 46.The pressure coil of a wattmeter should be connected on the supply side of the current coil when

Options:
a) supply voltage is low
b) supply voltage is high
c) load impedance is low
d) load impedance is high

Correct Answer: load impedance is high

Question 47. One of physical quantities which is not a base quantity is

Options:
a) length
b) force
c) mass
d) time

Correct Answer: force

Question 48.According to system international length of substance is measured in

Options:
a) cm
b) m
c) km
d) mm

Correct Answer: m

Question 49.The Atomic Theory was given by

Options:
a) James Chadwick
b) John Dalton
c) J. J. Thomson
d) E. Rutherford

Correct Answer: John Dalton

Question 50.Which one of the following quantities does not have a Unit

Options:
a) Velocity
b) Density
c) Specific gravity
d) Mass

Correct Answer: Specific gravity

Question 51.SI unit of "Inertia"

Options:
a) kgm2
b) kg per metre
c) kg
d) kgm3

Correct Answer: kg

Question 52.Mirage Effect is caused due to

a) Reflection of Light
b) Refraction of Light
c) Scattering and reflection of Light
d) Reflection and Refraction Light

Correct Answer: Reflection and Refraction Light

Question 53.To a stationary man, the frequency of sound source moving towards the man appears to be

Options:
a) higher than the original frequency
b) lower than the original frequency
c) same as original frequency
d) square root of original frequency

Correct Answer: higher than the original frequency

Question 54.Which colour light has the longest wavelength

Options:
a) Violet
b) Yellow
c) Red
d) Green

Correct Answer: Red

Question 55.Sound waves in air are

Options:
a) transverse waves
b) longitudinal waves
c) may be both types
d) none of these

Correct Answer: may be both types

Question 56.The laser produced from stimulated emission has the following characteristic

Options:
a) Monochromatic
b) Coherent
c) very narrow and collimated ray
d) All of these

Correct Answer: All of these

Question 57.A 6 V battery is connected to a 300Ω load. Under these conditions, it is rated at 40 Ah. How long can it supply current to the load?

Options:
a) 1000 h
b) 2000 h
c) 200 h
d) 4000 h

Correct Answer: 2000 h

Question 58. A 12 V source has an internal resistance of 90 Ω . If a load resistance of 20 Ω is connected to the voltage source, the load power, PL isएक

a) 2.38 mW
b) 2.38 W
c) 238 mW
d) 23.8 W

Correct Answer: 238 mW

Question 59.A network consists of a large number of ideal linear resistors, one of which is R and 2 constant ideal sources. The power consumed by R is P1 when only the first source is active and P2 when only the second source is active. If both sources are active simultaneously, then the power consumed by R is

a) P1 ± P2
b) √P1 ± √P2
c) (√P1 ± √P2)
d) (P1 ± P2)

Correct Answer: (√P1 ± √P2)

Question 60.Find the power dissipated in 8 Ω resistors in the circuit

Options:
a) 7.37 W
b) 7.73 W
c) 3.73 W
d) 3.37 W

Correct Answer: 7.37 W

Question 61. Kirchhoff's second law is based on law of conservation of

Options:
a) charge
b) energy
c) momentum
d) mass

Correct Answer: energy

Question 62.During charging the specific gravity of electrolyte of a lead acid battery

Options:
a) increases
b) decreases
c) remains same
d) becomes zero

Correct Answer: increases

Question 63.Norton's theorem states that a complex network connected to a load can be replaced with an equivalence impedance

Options:
a) in series with a current source
b) in parallel with a voltage source
c) in series with a voltage source
d) in parallel with a current source

Correct Answer: in parallel with a current source

Question 64.Two bulbs marked "200 watt200 volts" and "100 watt200 volts" are joined in series to 200 volts supply. Power consumed in circuit is

Options:
a) 300 watt
b) 33 watt
c) 66.66 watt
d) 150watt

Correct Answer: 66.66 watt

Question 65.A capacitor is charged by a constant current of 2 mA and results in a voltage increase of 12 V in a 10 sec interval. The value of capacitance is

Options:
a) 0.75 milli Farad
b) 24 milli Farad
c) 12 milli Farad
d) 1.67 milli Farad

Correct Answer: 1.67 milli Farad

Question 66.Twelve 6 ohm resistor are used as edge to form a cube. The resistance between two diagonally opposite corner of the cube is

Options:
a) 5/6 ohm
b) 6/5 ohm
c) 5 ohm
d) 6 ohm

Correct Answer: 5 ohm

Question 67.The source of a magnetic field is

Options:
a) an isolated magnetic pole
b) static electric charge
c) magnetic substances
d) current loop

Correct Answer: current loop

Question 68.AT/m is the unit of

Options:
a) m.m.f.
b) reluctance
c) magnetizing force
d) magnetic flux density

Correct Answer: magnetizing force

Question 69.A galvanometer may be converted into ammeter or voltmeter. In which of the following cases the resistance of the device will be the largest ?

Options:
a) an ammeter of range 10 A
b) a voltmeter of range 5 volt
c) an ammeter of range 5 A
d) a voltmeter of range 10 V

Correct Answer: a voltmeter of range 10 V

Question 70.Hystersis loss can be reduced by

Options:
a) laminating the magnetic circuit
b) using material of narrow hysteresis loop
c) increasing m.m.f. of the circuit
d) None of these

Correct Answer: using material of narrow hysteresis loop

Question 71.One unit of electricity is

Options:
a) One Kilo volt
b) One Kilo Watt
c) One Kilo Watt Hour
d) One Kilo Amp Hour

Correct Answer: One Kilo Watt Hour

Question 72.Two wires A and B of the same material and length L and 2L have radius r and 2r respectively. The ratio of their specific resistance will be:

Options:
a) 1:1
b) 1:2
c) 1:4
d) 1:8

Correct Answer: 1:1

Question 73.for a given line voltage, four heating coils will produce maximum heat when connected

Options:
a) all in parallel
b) all in series
c) two parallel pairs in series
d) one pair in parallel with the two in series

Correct Answer: all in parallel

Question 74.At low frequenies the material used for transformer core is

Options:
a) copper
b) silicon iron
c) soft iron
d) none

Correct Answer: copper

Question 75.The ideal OPAMP has the following characteristic

a) R_i = ∞, A = ∞, R₀ = 0
b) R_i = 0, A = ∞, R₀ = 0
c) R_i = ∞, A = ∞, R₀ = ∞
d) R_i = 0, A = ∞, R₀ = ∞

Correct Answer: R_i = ∞, A = ∞, R₀ = 0

Question 76.The correct full wave rectifier circuit is

Question 77.Negative feedback in an amplifer

Options:
a) reduce gain
b) increases freqency and phase distrotions
c) reduces bandwidth
d) increases noise

Correct Answer: reduce gain

Question 78.In case of class A amplifiers, the ratio of efficiency of transformer coupled amplifier to efficiency of a transformer less amplifier is

Options:
a) 0.5
b) 1.0
c) 1.36
d) 2.0

Correct Answer: 2.0

Question 79.When a PN Junction is formed, diffusion current causes

Options:
a) mixing of current carriers
b) forward bias
c) reverse bias
d) barrier potential

Correct Answer: barrier potential

Question 80.Pure Semiconductor Silicon Dopped with Boron forms

Options:
a) pnType Semiconductor pntype
b) ntype Semiconductor ntype
c) ptype Semiconductor ptype
d) nptype semiconductor nptype

Correct Answer: ptype Semiconductor ptype

Question 81.Wider Band gap Semiconductors are called:

a) Super conductor
b) Super Isolators
c) Semi Semiconductors
d) Semi Isolators

Correct Answer: Semi Isolators

Question 82.Which of the following is common feature of FET?

Options:
a) They have high input imepdance
b) These are voltage controlled devices
c) They have isolated input & output
d) All of these

Correct Answer: All of these

Question 83.All of the following can propagate through vaccum except

Options:
a) Xrays
b) radio waves
c) light waves
d) sound waves

Correct Answer: sound waves

Question 84.In LCR circuit which one of the following statement is correct

Options:
a) L and R oppose each other
b) R value increases with frequency
c) the inductive reactance increases with frequency
d) the capacitive reactance increases with frequency

Correct Answer: R value increases with frequency

Question 85.Miller sweep has the following data R = 1K ohms, C = 1 PF, V=10 Volts. Its sweep speed is

Options:
a) 10³ V/S
b) 10⁶ V/S
c) 10⁴ V/S
d) 10¹⁰ V/S

Correct Answer: 10¹⁰ V/S

Question 86.In a p-n diode, hole diffuse from pregion to nregion because

Options:
a) there is high concentration of holes in the pregion
b) holes are positively charged
c) holes are urged to move by the barrier potential
d) the free electrons in the nregion attract the holes. n

Correct Answer: there is high concentration of holes in the pregion

Question 87.Which of the following method of biasing provides the best operating point stability

Options:
a) Two battery bias
b) Collectortobase bias
c) Fixed bias
d) Self bias

Correct Answer: Self bias

Question 88.Feedback is said to be positive if

Options:
a) the feedback signal gets subtracted from the input signal
b) the feedback signal gets added to the input signal
c) any increase in the output signal results in a feedback signal which on being mixed with the input signal causes further increase in magnitude of the output signal
d) none of these

Correct Answer: any increase in the output signal results in a feedback signal which on being mixed with the input signal causes further increase in magnitude of the output signal

Question 89.Astable multivibrator may be used as

Options:
a) frequency to voltage converter
b) voltage to frequency converter
c) squaring circuit
d) comparator circuit

Correct Answer: voltage to frequency converter

Question 90.The most important consideration in power amplifier is

Options:
a) Biasing the circuit
b) Collector efficiency
c) To keep the transformer cool
d) None of these

Correct Answer: Collector efficiency

Question 91.A transformer coupled class A power amplifier has a load of 100 Ω on the secondary. If the turn ratio is 10:1, what is the value of load appearing on the primary?

Options:
a) 5 kΩ
b) 20 kΩ
c) 100 kΩ
d) 10 kΩ

Correct Answer: 10 kΩ

Question 92.For frequencies below the resonant frequency, a parallel LC circuit behaves as a ________ load

Options:
a) Inductive
b) Resistive
c) Capacitive
d) None of these

Correct Answer: Inductive

Question 93.The advantage of using a dual slope ADC in a digital voltmeter is thatिडिजटल

Options:
a) its conversion time is small
b) its accuracy is high
c) it gives output in BCD format
d) None of these

Correct Answer: its accuracy is high

Question 94.The Boolean experssion Y=AB + CD represents

Options:
a) Two ORs ANDed together
b) A 4input AND gate
c) Two ANDs ORed together
d) An exclusive OR

Correct Answer: Two ANDs ORed together

Question 95.A 4 bit module 6 ripple counter uses JK flip flop. If the propogation by each flip flop is 50 ns . The maximum clock frequency be used

Options:
a) 5 MHz
b) 10 MHz
c) 4 MHz
d) 20 MHz

Correct Answer: 5 MHz

Question 96.MOD12 and MOD6 counters and multipliers are most commonly used as

MOD12,
MOD6

Options:
a) Frequency counters
b) Multiplexed displays
c) Power consumption meters
d) Digital Colcks

Correct Answer: Digital Colcks

Question 97.Decimal counter using flipflops and feedback, are more popular than a decimal counter of ring type because of

Options:
a) simple decade circuitary required
b) economy in the number of flipflops
c) high speed of operation
d) its availability in IC form

Correct Answer: economy in the number of flipflops

Question 98.The Characteristic Equation of JK Flip Flop is Career

Question 99.Transparent Flip Flops are also called as

Options:
a) Latches
b) Asynchronous Flip Flops
c) Multiplexers
d) Both Latches & Asynchronous Flip Flops

Correct Answer: Asynchronous Flip Flops

Question 100.63 in Decimal System can be written in Binary Systems as

a) 111100
b) 111101
c) 111111
d) 101010

Correct Answer: 111111

Question 101.In a class A amplifier with sinusoidal input signal, the output current flows for :

Options:
a) half the cycle
b) full cycle
c) less than half cycle
d) more than half cycle

Correct Answer: full cycle

Question 102.A moving charge produces:

Options:
a) an electric field only
b) a magnetic field only
c) Both an electric field only & a magnetic field only
d) None of these

Correct Answer: Both an electric field only & a magnetic field only

Question 103.If A and B are two input in AND gates, the AND gate has output of 1, when the values of A and B are

Options:
a) A=0,B=0
b) A=1,B=1
c) A=1, B=0
d) A=0, B=1

Correct Answer: A=0,B=0

Question 104.Which of the following can be used as an inverter

Options:
a) AND
b) NOR
c) OR
d) None of these

Correct Answer: AND

Question 105.The 9's complement of a Decimal digit is the

a) 1's Complement of the Excess3 code for the Digit
b) 2's Complement of the Excess3 code for the Digit
c) 1's Complement of the Excess4 code for the Digit
d) 2's Complement of the Excess4 code for the Digit

Correct Answer: 1's Complement of the Excess3 code for the Digit

Question 106.Hexadecimal equivalent of binary number 10001101011001 is

Options:
a) 2359
b) 9493
c) 8D62
d) 8DF2

Correct Answer: 2359

Question 107.Which of the following statement is true?

Options:
a) A+ ĀB = A
b) A(Ā+ = AB
c) CA + CĀB = CA +CB
d) None of these

Correct Answer: A+ ĀB = A

Question 108.In Boolean algebra, the term sumofproducts means

Options:
a) the AND function of several OR functions
b) the OR function of several AND functions
c) the OR function of several OR functions
d) the AND function of several AND functions

Correct Answer: the OR function of several AND functions

Question 109.The output of a sequential circuit depends on

Options:
a) present inputs
b) past outputs
c) both present and past inputs
d) past inputs

Correct Answer: both present and past inputs

Question 110.A multiplexer is also known as

Options:
a) counter
b) decoder
c) data selector
d) none of these

Correct Answer: data selector

Question 111.Three equal impedances are first connected in star across a balanced 3 phase supply. If connected in delta across the same supply3

a) Phase current will be tripled
b) Phase current will be doubled
c) Line current will become one third
d) Power consumed will increase three fold

Correct Answer: Power consumed will increase three fold

Question 112.The capacitive circuit are used to___________ pf (Power factor)

Options:
a) increases
b) decreases
c) satblizer
d) No effect on

Correct Answer: increases

Question 113.The efficiency of transformer is maximum when

Options:
a) copper loss= twice Iron loss
b) copper loss=half times Iron loss
c) copper loss=Iron Loss
d) no condition for maximum efficiency

Correct Answer: copper loss=Iron Loss

Question 114.A series motor is best suited for driving Career

Options:
a) latches
b) cranes and hoists
c) shears and punches
d) machine tools

Correct Answer: cranes and hoists

Question 115.Materials used for precision resistors should have

Options:
a) low resistivitiy
b) high resistance temperature
c) high themoelectric emf against copper
d) none of these

Correct Answer: none of these

Question 116.In a synchronous motor the magnitude of back emf Eb depends on ______________

Options:
a) speed of the motor
b) load on the motor
c) both speed and stator flux
d) d.c. excitation only

Correct Answer: d.c. excitation only

Question 117.When a 3 phase induction motor is switched on the rotor frequency is ______________

Options:
a) 50 Hz
b) same as supply frequency
c) same as slip frequency
d) zero

Correct Answer: same as supply frequency

Question 118.The regulation of a synchronous motor is ____________

Options:
a) 0.01
b) 1
c) 0.5
d) 0

Correct Answer: 0

Question 119.In a 3Phase star connected system, the line current is

Options:
a) equal to phase current
b) 1/√3 times phase current
c) √3 times phase current
d) 3 times phase current

Correct Answer: 1/√3 times phase current

Question 120.Three equal resistances of 3 ohms each are connected in delta. The star equivalent value of resistance in ohms is

Options:
a) 2
b) 6
c) 2/3
d) 2/6

Correct Answer: 2/6

Question 121.The speed regulation of a synchronous motor is

Options:
a) positive
b) zero
c) negative
d) any of the these

Correct Answer: positive

Question 122.The stator of a split phase type single phase induction motor is provided with

Options:
a) 3 windings
b) 2 windings
c) 1 winding
d) 6 windings

Correct Answer: 1 winding

Question 123.Among the following statements which one is true?

Options:
a) a.c. transmission is more efficient
b) d.c. transmission is more efficient
c) both are equally efficient
d) low voltage d.c. transmission is more efficient

Correct Answer: both are equally efficient

Question 124.Cassegrain feed is used with a parabolic reflector to:

Options:
a) increase the gain of the system
b) increase the bandwidth of the system
c) reduce the size of the main reflector
d) allow the feed to be placed at a convenient point

Correct Answer: allow the feed to be placed at a convenient point

Question 125.The cavity magnetron uses strapping to

Options:
a) prevent mode jumping
b) prevent cathode back heating
c) ensure bunching
d) improve phase focussing effect

Correct Answer: prevent mode jumping

Question 126.Which of the following gives maximum probability of error

Options:
a) ASK
b) FSK
c) PSK
d) DPSK

Correct Answer: ASK

Question 127.A telephone exchange has 9000 subscribers. If the number of calls originating at peak time is 10,000 in one hour, the calling rate is

Options:
a) 0.9
b) 10/9
c) 0.81
d) 0.1

Correct Answer: 10/9

Question 128.A layer which is above the Presentation layer in OSI model is

Options:
a) DataLink Layer
b) Physical Layer
c) Application Layer
d) Session Layer

Correct Answer: Application Layer

Question 129. The synchronous modems are more costly than the asynchronous modems because

Options:

a) They produce large volume of data
b) They contain clock recovery circuit
c) They transmit the data with stop and start bits.
d) They operate with a larger bandwidth

Correct Answer: They contain clock recovery circuit

Question 130.Foster seelay discriminator uses a

Options:
a) Single tuned circuit
b) Double tuned circuit with primary and secondary tuned to the different frequency
c) Double tuned circuit with primary and secondary tuned to the same frequency
d) None of these

Correct Answer: Double tuned circuit with primary and secondary tuned to the same frequency

Question 131.A transmitter puts out a total power of 2.09 Watts of 30% AM signal. How much power is contained in each of the sidebands?

Options:
a) 2.09 watts
b) 2 Watts
c) 0.09 watts
d) 0.045 watts

Correct Answer: 0.045 watts

Question 132.As compared to PPM, the disadvantage of PDM is that it requires ______________

Options:
a) more samples per second
b) pulses of larger width
c) powerful transmitter
d) none of these

Correct Answer: powerful transmitter

Question 133.Over modulation of transmitter signal is corrected by the adjustment of the __________

Options:
a) speech amplifier
b) power amplifier
c) RF oscillator
d) frequency doubler

Correct Answer: speech amplifier

Question 134.Speech amplifiers are usually operated as

Options:
a) Class A
b) Class B
c) Class C
d) None of these

Correct Answer: Class C

Question 135.Cylindrical cavity resonators are not used with because they have ___

Options:
a) Q that is too low
b) A shape whose resonant frequency is too
c) Harmonically related resonant frequency
d) None of these

Correct Answer: Harmonically related resonant frequency

Question 136.The maximum speed at which the data can be transmitted on standard PCM stream is

Options:
a) 64 kbps
b) 128 kbps
c) 2 Mbps
d) 4 Mbps

Correct Answer: 4 Mbps

Question 137.A purely resistance load ZL is connected to a 50 Ω lossless transmission line such that it has a voltage standing wave ratio of 3. The possible value of Z_L

Options:
a) 50 Ω
b) 450 Ω
c) Both 1 & 2
d) None of these

Correct Answer: Both 1 & 2

Question 138.The VSWR can have any value between VSWR

Options:
a) 0 and 1
b) -1 and +1
c) 0 and ∞
d) 1 and ∞

Correct Answer: 1 and ∞

Question 139.For a 2port symmetrical bilateral network, if transmission parameters A = 3 and B = 1 , the value of parameter C is

Options:
a) 3
b) 8
c) 7
d) 9

Correct Answer: 8

Question 140.A line becomes distortion less if

Options:
a) It is properly matched
b) It is terminated into Zo
c) LG = CR
d) LR = GC

Correct Answer: LG = CR

Question 141.Input impedance of a shortcircuited lossless line with length λ/ 4 is

Options:
a) Z0
b) ZERO
c) ONE
d) INFINITY

Correct Answer: INFINITY

Question 142.BRI in ISDN has which of the following channels ?

Options:
a) 30B+1D
b) 2B+1D
c) 30B+2D
d) Only 2 B Channels

Correct Answer: 2B+1D

Question 143.Pollen count and Solar Protons affects the Microwave Link by

Options:
a) Increasing the gain of the receiver
b) Increase in the Interference
c) Increased the Distance Covered
d) None of these

Correct Answer: Increase in the Interference

Question 144.Input impedance of a shorted loss lessline of length λ/4 is _________

Options:
a) infinity
b) zero
c) Z0
d) none of these

Correct Answer: infinity

Question 145.The phase angle corresponding to λ/4 in a standing wave pattern is __________

Options:
a) 180 degree
b) 135 degree
c) 45 degree
d) 90 degree

Correct Answer: 90 degree

Question 146.The attenuator where the series arm Ra is usually made equal to characteristic impedance, is a ________

Options:
a) symmetrical T attenuator
b) symmetrical attenuator
c) bridged T attenuator
d) lattice T attenuator

Correct Answer: bridged T attenuator

Question 147.A filter having two pass bands and seperated by a small frequency band has zero output, the filter is of the type _________

Options:
a) band stop
b) high pass
c) mderived band pass mderived
d) band pass

Correct Answer: band stop

Question 148.If an mderived filter section is built with m=1, it will _______

Options:
a) not be physically realizable
b) not act as filter
c) become a prototype section
d) be used only where very high attenuation near cutoff is desired

Correct Answer: become a prototype section

Question 149.Closed circuit technique are based on

Options:
a) superposition theorem
b) Thevenins theorem
c) Kirchoff's current law
d) Kirchoff's voltage law

Correct Answer: Thevenins theorem

Question 150. The dimensions of force areबल

Options:
a) MLT^-2
b) ML^-1T^-2
c) MLT1
d) ML²T^-2

Correct Answer: MLT^-2

Question 151. For measuring a very high resistance we should use उ

Options:
a) Kelvin's double bridge
b) Wheatstone bridge
c) Megger
d) None of these

Correct Answer: Megger

Question 152.The pressure coil of a dynamometer type wattmeter is

Options:
a) Highly inductive
b) Highly resistive
c) Purely resistive
d) Purely inductive

Correct Answer: Highly resistive

Question 153.The Guage factor of a Resistance wire strain guage, is a measure of

Options:
a) Sensitivity of the Guage
b) Dynamic range of displacement measure
c) Resolution
d) Resistevity

Correct Answer: Sensitivity of the Guage

Question 154.The performance of Servomotors is ______________ Than stepper motors

Options:
a) Very Accurate
b) Highly controlled by feedback
c) Both Very Accurate & Highly controlled by feedback
d) None of these

Correct Answer: Both Very Accurate & Highly controlled by feedback

Question 155.Microwaves have frequency range of

Options:
a) 10 GHz to 30 Ghz
b) 1 Mhz to 100 Mhz
c) 1 GHz to 30 GHz
d) 1 MHz to 300 GHz

Correct Answer: 1 MHz to 300 GHz

Question 156.Sensititivity and Specificity are related to

Options:
a) Accuracy of the instrument
b) Precision of the instrument
c) Both Accuracy of the instrument & Precision of the instrument
d) None of these

Correct Answer: Accuracy of the instrument

Question 157.Precision Rectifier can be used as ______________ with small modifications

Options:
a) Pulse Width Detector
b) Peak Detector
c) Frequency Detector
d) Phase Detector

Correct Answer: Peak Detector

Question 158.Q of a resonant transmission line is _____________

Options:
a) Q=L/R
b) Q=ωL/R
c) Q=ωR/L
d) Q=ω/LR

Correct Answer: Q=ωL/R

Question 159.An LCD requires a power of ____________

Options:
a) 20 W
b) 20 mW
c) 20μW
d) 20 nW

Correct Answer: 20μW

Question 160.A linear scale used in ___

Options:
a) Thermocouple meters
b) Moving iron meters
c) Hotwire meters
d) None of these

Correct Answer: None of these

Question 161.A theretocouple ammeter/voltmeter has ___

Options:
a) A logarithmic law response
b) A square law response
c) A linear law response
d) None of these

Correct Answer: A square law response

Question 162.Strike out the features not to be associated with the rectifier instruments

Options:
a) Small power loss
b) High degree of measuring accuracy
c) High sensitivity
d) None of these

Correct Answer: None of these

Question 163.The system shown in fig. below has steadystate

Options:
a) 0.1
b) 0.9
c) 1
d) 9

Correct Answer: 9

Question 164. The rootlocus diagram for a closedloop feedback system is shown in the figure. The system is overdamped

Options:
a) only if 0 ≤ k ≤ 1
b) only if 1 < k < 5
c) only if k > 5
d) if 0 ≤ k < 1 or k > 5

Correct Answer: if 0 ≤ k < 1 or k > 5

Question 165.Which of the following is an open loop control system

Options:
a) Field controlled D.C. motor
b) Ward leonard control
c) Metadyne
d) Stroboscope

Correct Answer: Field controlled D.C. motor

Question 166.The transfer function of the tacheometer is of the form

Options:
a) Ks
b) K/s
c) K/(s+1)
d) K/[s(s+1)]

Correct Answer: Ks

Question 167.Which of the following is aclosed loop system

Options:
a) electric switch
b) car starter
c) dc generator
d) autopilot for an aircraft

Correct Answer: autopilot for an aircraft

Question 168.Poles are the complex frequencies of a transfer funtion where the response becomes

Options:
a) infinite
b) zero
c) oscillatory
d) decaying

Correct Answer: infinite

Question 169.Which signal will become zero when the feedback signal and reference signal are equal?

Options:
a) Actuating signal
b) Input signal
c) Reference signal
d) Feed back signal

Correct Answer: Actuating signal

Question 170.High power amplification is achieved by the use of

Options:
a) Magnetic amplifier
b) DC amplifier
c) DC generator
d) Amplidyne

Correct Answer: DC amplifier

Question 171.The system steady state error can be minimized by

Options:
a) decreasing damped frequency
b) decreasing natural frequency
c) Increasing damped frequency
d) Increasing system gain constant K

Correct Answer: decreasing natural frequency

Question 172.The time constant of a servocontrol system can be decreased by

Options:
a) decreasing the inertial of the system
b) decreasing the viscous damping of the system
c) All of these
d) None of these

Correct Answer: decreasing the viscous damping of the system

Question 173.Zero initial conditions mean that the system is

Options:
a) At rest and no energy is stored in any of its components
b) Working with zero reference signal'
c) Working with zero stored energy
d) None of these

Correct Answer: At rest and no energy is stored in any of its components

Question 174.The most important technique used for stability and the transient response of the system is

Options:
a) Nyquist plot
b) Root locus
c) Bode plot
d) Routh Hurwitz criteria

Correct Answer: Nyquist plot

Question 175.Synchro transmitter also acts as an

Options:
a) error detector
b) compensator
c) comperator
d) input to a servomotor

Correct Answer: input to a servomotor

Question 176.The number of memory cycles required to execute the following 8085 instructions

(i) LDA 3000 H
(ii) LXI D, F0F1 H
(i) LDA 3000 H
(ii) LXI D, F0F1 H

Options:
a) 2 for (i) and 2 for (ii)
b) 4 for (i) and 3 for (ii)
c) 3 for (i) and 3 for (ii)
d) 3 for (i) and 4 for (ii)

Correct Answer: 4 for (i) and 3 for (ii)

Question 177.In an 8085 microprocessor, the instruction CMP B has been executed while the content of the accumulator is less than that of register B. As a resultएक

Options:
a) Carry flag will be set but Zero flag will be reset
b) Carry flag will be reset but Zero flag will be set
c) Both Carry flag and Zero flag will be reset
d) Both Carry flag and Zero flag will be set\

Correct Answer: Carry flag will be set but Zero flag will be reset

Question 178.The contents of accumulator after the execution of following instructions will be

MVI A, B7H
ORA A
RAL

Options:
a) 6EH
b) 6FH
c) EEH
d) EFH

Correct Answer: 6FH

Question 179.In 8085 microprocessor, stack works on8085

Options:
a) LILO
b) LIFO
c) FIFO
d) None of these

Correct Answer: LIFO

Question 180.The total size and the total number of Interrupts procedures that can be defined in this memory of 8086 is

Options:
a) 256 Bytes, 256 Procedures
b) 1K Bytes, 256 Procedures
c) 256 Bytes, 1K Procedures
d) 1K Bytes, 1K Procedures

Correct Answer: 1K Bytes, 256 Procedures

Question 181.NMI input is

Options:
a) Edge Triggererd on Negative edge i.e. 1 to 0 transition
b) Edge Triggererd on Positive edge i.e. 0 to 1 transition
c) Level triggered on 1
d) Level triggered on 0

Correct Answer: Edge Triggererd on Positive edge i.e. 0 to 1 transition

Question 182.Keeping in view the stability of the control circuit the feedback factor (x) and gain without feedback (y) for a stable circuit are related as

Options:
a) xy=1
b) x/y<1
c) xy<1
d) x=y

Correct Answer: xy<1

Question 183.Washing maching is example of

Options:
a) Closed Loop control System
b) Open Loop contro system
c) Both Closed Loop control System & Open Loop contro system
d) None of these

Correct Answer: Open Loop contro system

Question 184.Binary 11110 equals ____ in hexadecimal

Options:
a) 2A
b) 2E
c) 1E
d) 2C

Correct Answer: 2A

Question 185.Gate is a circuit with one or more input but out put is

Options:
a) two
b) one
c) three
d) more than 1

Correct Answer: two

Question 186._____ data transmission is more useful when sending information for long distances

Options:
a) Serial
b) Parallel
c) Either
d) Neither

Correct Answer: Neither

Question 187.8085 MPU is

Options:
a) 8 bit
b) 16 bit
c) 32 bit
d) 64 bit

Correct Answer: 64 bit

Question 188.Which of the following languages is suitable for artificial intelligence?

Options:
a) Fortran
b) Basic
c) Prolong
d) 'C'

Correct Answer: Basic

Question 189.Which one of the following task is not done by data link layer?

Options:
a) Framing
b) Error control
c) Flow control
d) Channel coding

Correct Answer: Channel coding

Question 190.X.25 works on __________________ protocol

Options:
a) LAP A
b) LAP B
c) LAP C
d) LAP D

Correct Answer: LAP B

Question 191.The brain of any computer system is

Options:
a) ALU
b) CPU
c) ROM
d) RAM

Correct Answer: CPU

Question 192.MODEM can be classified as equipment of

Options:
a) DCE (data MB_Communication equipment)
b) DTE( DATA terminal equipment)
c) both
d) None of these

Correct Answer: DCE (data MB_Communication equipment)

Question 193.A MB_Computer program that converts an entire program into machine language at one time is called

Options:
a) interpreter
b) simulator
c) compiler
d) commander

Correct Answer: compiler

Question 194.The Q of a radio coil

Options:
a) is independent of frequency
b) increases monotonically as frequency increases
c) decreases monotonically as frequency increases
d) increases up to a certain frequency and decreases beyond that frequency

Correct Answer: increases up to a certain frequency and decreases beyond that frequency

Question 195.A linear circuit is one whose parameters (e.g. resistance)etc.

Options:
a) change with change in current
b) change with change in voltage
c) do not change with voltage and current
d) none of these

Correct Answer: do not change with voltage and current

Question 196.Programmable logic Array (PLA) uses ___________

Options:
a) PROM matrices
b) RAM matrices
c) Silo memory
d) ROM matrices

Correct Answer: ROM matrices

Question 197.Debug is synonymous to ____________

Options:
a) erase
b) exponent
c) trouble shoot
d) emulate

Correct Answer: trouble shoot

Question 198.The following is not an operating system

Options:
a) MSDOS
b) MSOffice
c) MSWindow
d) UNIX

Correct Answer: UNIX

Question 199.The following is a single user operating system

Options:
a) WINDOWS
b) WINDOWSNT
c) UNIX
d) none of these

Correct Answer: WINDOWSNT

Question 200.Active portion contains an operating system that will be loaded

Options:
a) when you start the system only
b) when you reset the system only
c) both when you start the system only and when you reset the system only
d) neither when you start the system only nor when you reset the system only

Correct Answer: when you reset the system only

 

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