(Download) BSNL Junior Engineer (JE) Solved Question Paper - 2016
"held on 28 Sep 2016 |  Afternoon shift"

EXAM DATE : 28­09­2016
EXAM NAME : BSNL Online Examination 2016
TOTAL MARKS : 200
EXAM START TIME : 15:00:00
EXAM DURAITON : 03:00:00
TOTAL NO OF QUESTIONS : 200

Question 1.Pick the Antonym for the word "NASTY"

Options:
a) sad
b) clean
c) filthy
d) challenging

Correct Answer: clean

Question 2.A person who is an Incharge of a Museum or an Art­Gallery

Options:
a) Invigilator
b) Anarchist
c) Curator
d) Superintendent

Correct Answer: Curator

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

He was caught by the teacher for cheating ________________the exam.

Options:
a) During
b) After
c) Near
d) Outside

Correct Answer: During

Question 4.Change the following sentences into passive voice : Darjeeling grows tea.

Options:
a) Let the tea be grown in Darjeeling.
b) Tea is grown in Darjeeling.
c) Tea grows in Darjeeling.
d) Tea is being grown in Darjeeling.

Correct Answer: Tea is grown in Darjeeling.

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 : PAIN:SEDATIVE ::grief

Options:
a) consolation
b) ache
c) trance
d) stimulant

Correct Answer: consolation

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

Options:
a) menacing
b) threatening
c) secured
d) unsafe

Correct Answer: secured

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

" One should not be indiffrent __________ the suffering of others

Options:
a) about
b) to
c) of
d) at

Correct Answer: to

Question 8.Choose the correct plural of the following word: Negro

Options:
a) Negries
b) Nigger
c) Negros
d) Negroes

Correct Answer: Negroes

Question 9.Choose the word /group of words which is similar in meaning to the word.

Eulogize

Options:
a) Harm
b) Praise
c) Extract
d) Penalise

Correct Answer: Praise

Question 10.Choose the appropriate options to complete the sentences: ____________ drawings is different.

Options:
a) Each one of the
b) Very few
c) Every
d) All of

Correct Answer: Each one of the

Question 11.Which Bank launched India's first MUDRA card under Pradhan Mantri Mudra Yojana

Options:
a) Corporation Bank
b) State Bank of India
c) Central Bank
d) Reserve Bank of India

Correct Answer: Corporation Bank

Question 12.On which date, Telangana state Foundation Day is observed?

Options:
a) 30­May
b) 31­May
c) 2­Jun
d) 4­Jun

Correct Answer: 2­Jun

Question 13.Union Telecom Minister Ravi Shankar Prasad announced that a postal stamp would be released in honour of erstwhile Indian emperor

Options:
a) Akbar
b) Ashoka
c) Bahadur Shah II
d) Shah Jahan

Correct Answer: Ashoka

Question 14.Which of the following is a primary colour?

Options:
a) pink
b) black
c) red
d) white

Correct Answer: red

Question 15.Galvanized iron is iron coated with_______

Options:
a) zinc
b) gold
c) silver
d) copper

Correct Answer: zinc

Question 16.Whose signature is found on the one rupee currency notes ?

Options:
a) The President
b) The Finance Minister
c) The Governor of Reserve Bank
d) The Finance Secretary

Correct Answer: The Finance Secretary

Question 17.On which of the following plants did Gregor Mendal perform his classical experiment?

Options:
a) Maize
b) Pea
c) Wheat
d) Gram

Correct Answer: Pea

Question 18.Which organ of the body is affected by Leucoderma ?

Options:
a) Heart
b) Kidney
c) Lungs
d) Skin

Correct Answer: Skin

Question 19. What is the present Loksabha Constituency of Sushma Swaraj?

Options:
a) Ambala
b) Delhi
c) Bellry
d) Vidisha

Correct Answer: Vidisha

Question 20.The European Union adopted which of the following as common currency

Options:
a) Dollar
b) Peso
c) Euro
d) Yen

Correct Answer: Euro

Question 21.The real part of sin (x + iy) is ­

Options:
a) sin x cos y
b) sin x cosh x
c) cos x sinh y
d) cos x sin y

Correct Answer: sin x cosh x

Question 22.Two or more vectors are said to be ­­­­­­­­­­­­­­­­­­­­­­­­­­­if they are parallel to the same line, irrespective of their magnitudes and directions.

Options:
a) EQUAL VECTORS
b) COINITIAL VECTORS
c) COLLINEAR VECTORS
d) None of these

Correct Answer: COLLINEAR VECTORS

Question 23.

Question 24.At what point on curve y=(cosx­1) in { o, 2π } is the tengnt close to x axis

Options:
a) (π/2,­1)
b) (π, ­2)
c) (2π/3, ­3/2)
d) None of these

Correct Answer: (π, ­2)

Question 25.In the equation of staright line y=mx +c, m is

Options:
a) Gradient
b) Intercept
c) Variable
d) None of these

Correct Answer: Gradient

Question 26.The area under a curve between two points can be found by doing a ______________between the two points.

Options:
a) Integration
b) definite integration
c) differentiation
d) L Hospital Rule

Correct Answer: definite integration

Question 27.If the order of matrix A is m x p. And the order of B is p x n. Then the order of AB is

Options:
a) n x p
b) n x m
c) m x p
d) m x n

Correct Answer: m x n

Question 28.If x=rcosθ, y=rsin θ then z=x + iy

Options:
a) r(coseθ + sinθ)
b) r(coseθ + isinθ)
c) r(coseθ sinθ)
d) r(coseθ ­ sinθ)

Correct Answer: r(coseθ + isinθ)

Question 29.Find the derivative of xⁿ

Options:
a) nx^n­1
b) nxⁿ⁺¹
c) ­nx^n­1
d) nx^n­1

Correct Answer: x^n­1

Question 30.

Options:
a) log (secx ­ tanx) + log cosx +c
b) log (secx + tanx) + log cosx +c
c) log (secx + tan2x) + log cosx +c
d) none

Correct Answer: log (secx + tanx) + log cosx +c

Question 31.The distance between the parallel lines 4x+6y+4=0 and 4x+6y+5=0 is

Options:
a) 1 / √ 52
b) √ 52
c) 1 / √ 2
d) 1

Correct Answer: 1 / √ 52

Question 32.

Question 33.The two types of errors that are related to differentials are:

Options:
a) Human, Absolute.
b) Absolute, Relative.
c) Relative, Controllable.
d) Controllable, Natural.

Correct Answer: Absolute, Relative.

Question 34.The 2nd derivative of a function at point P is 0, and concavity is positive for values to the right of P. What must the concavity be to the left of P for P to be an inflection point?

Options:
a) The concavity must also be positive.
b) The concavity must be negative.
c) The concavity must be neutral (0).
d) The concavity must be imaginary.

Correct Answer: The concavity must be negative.

Question 35.It has been determined that g(p) has a maximum at p = ­47.6. What can be said of the function's concavity at that point?

Options:
a) g ''(p) = 0
b) g ''(p) > 0
c) g ''(p) < 0
d) There's no way to tell without first knowing what the specific function is.

Correct Answer: g ''(p) < 0

Question 36.The partial differential equationxy(∂z / ∂x) = 5(∂²z / ∂y²) is classified as

Options:
a) elliptic
b) parabolic
c) hyperbolic
d) none of these

Correct Answer: parabolic

Question 37.The necessary condition for an admissible function to have an extremum of I[y(x)]=∫x1^x2ƒ(x,y,y')dx are

Options:
a) y(x₁)=y₁,y(x₂)=y₂
b) y'(x) must be continuous
c) y''(x) must be continuous
d) All of these

Correct Answer: All of these

Question 38.Let H=Z₂ x Z₆ and K=Z₃ x Z₄

. Then

Options:

c) H and K are not isomorphic.
d) H and K are not isomorphic, since their identities are not equal.

Correct Answer: H and K are not isomorphic.

Question 39.How will the fundamental frequency of a wire change if the tension is halved and the area of cross section doubled?

Options:
a) It will be halved
b) It will be doubled
c) It will remain same
d) It will become one­fourth

Correct Answer: It will be halved

Question 40.Laser light is ______ emission.

Options:
a) Coherent
b) Stimulated
c) Spontaneous
d) Coherent and stimulated

Correct Answer: Coherent and stimulated

Question 41.Isotopes are atoms that have

Options:
a) Same atomic number but different atomic mass
b) Same atomic mass but different atomic number
c) Same Number of Protons but different number of electrons
d) None

Correct AnswerSame atomic number but different atomic mass

Question 42.Isotopes are atoms that have

Options:
a) Same atomic number but different atomic mass
b) Same atomic mass but different atomic number
c) Same Number of Protons but different number of electrons
d) None

Correct Answer: Same atomic number but different atomic mass

Question 43.Sound cannot travel through

Options:
a) Gases
b) Vacuum
c) solids
d) Liquids

Correct Answer: Vacuum

Question 44.candela is the unit of

Options:
a) Magnetic flux
b) Intensity of electric field
c) Luminous intensity
d) Charge आवेश

Correct Answer: Luminous intensity

Question 45.Magnetic induction and magnetic flux differ in the dimensions of

Options:
a) Time
b) Mass
c) Electric current
d) Length

Correct Answer: Electric current

Question 46.Sum of these is unity

Options:
a) Reflectivity
b) Reflectivity + Refractivity
c) Reflectivity + Refractivity + Transmitivity
d) Any

Correct Answer: Reflectivity + Refractivity + Transmitivity

Question 47.Refractive index of materials is approximately equal to square root of

Options:
a) electrical permittivity
b) magnetic permeability
c) electrical permittivity x magnetic permeability
d) None

Correct Answer: electrical permittivity

Question 48.Quantity which does not changes during refraction is

Options:
a) direction
b) speed
c) frequency
d) wavelength

Correct Answer: frequency

Question 49.Speed of light in water is

Options:
a) 3.0 x 10⁸
b) 2.3 x 10⁸
c) 2.0 x 10⁸
d) 1.2 x 10⁸

Correct Answer: 2.3 x 10⁸

Question 50.Smallest particle of an element which can take part in any chemical change.

Options:
a) nucleus
b) atom
c) proton
d) neutron

Correct Answer: atom

Question 51.An Electric field deflects beams of

Options:
a) protons
b) electrons
c) neutrons
d) both protons and electrons

Correct Answer: both protons and electrons

Question 52.Potential energy source for inducing fusion reaction is

Options:
a) x­ray
b) laser
c) ultraviolet
d) microwave

Correct Answer: laser

Question 53.During x­ray formation, if voltage is increased then

Options:
a) min wave length decreases
b) min wave length increases
c) intensity decreases
d) intensity increases

Correct Answer: min wave length decreases

Question 54.For an electron to be confined to a nucleus its speed relative to speed of light would have to be

Options:
a) equal
b) less
c) greater
d) equal to infinity

Correct Answer: greater

Question 55.In history of earth, more coal has been used since

Options:
a) 1930
b) 1935
c) 1940
d) 1945

Correct Answer: 1945

Question 56.If two vectors have same magnitude and are parallel to each other, then they are said to be

Options:
a) same
b) different
c) negative
d) equal

Correct Answer: equal

Question 57.The ability of a material to remain magnetized after removal of the magnetizing force is known as­

Options:
a) permeability
b) reluctance
c) hysteresis
d) retentivity

Correct Answer: retentivity

Question 58.Value of constant k (m/F) in Coloumb's law has value of

Options:
a) 9X10⁴
b) 9X10⁵
c) 9X10⁶
d) 9x10⁹

Correct Answer: 9x10⁹

Question 59.Like a resonant R­L­C circuit,a parallel resonant circuit also

Options:
a) has a power factor of unitty
b) offers minimum impedance
c) draws maximum current
d) magnifies current

Correct Answer: has a power factor of unitty

Question 60.The resistance of a 100 W, 200 V lamp is100 W, 200 V

Options:
a) 100 ohm
b) 400 ohm
c) 1600 ohm
d) 200 ohm

Correct Answer: 400 ohm

Question 61.A constant current source supplies a electric current of 200 mA to a load of 2kΩ. When the load changed to 100Ω, the load current will be

Options:
a) 9mA
b) 4A
c) 4mA
d) 400mA

Correct Answer: 4A

Question 62.Two incandescent light bulbs of 40 W and 60 W rating are connected in series across the mains. Then

Options:
a) the bulbs together consume 100 W
b) the bulbs together consume 50 W
c) the 60 W bulb glows brighter
d) the 40 bulb glows brighter

Correct Answer: the 40 bulb glows brighter

Question 63.The magnetic flux density in an air­cooled coils is 10­2 wb/m2 .With a cast iron of relative permeability 100 inserted, the flux density will become

Options:
a) 10^­4 wb/m²
b) 10⁺⁴ wb/m²
c) 10­2 wb/m²
d) 1 wb/m²

Correct Answer: 1 wb/m²

Question 64.If an electron enters a uniform magnetic field obliquely, the path of an electron will become

Options:
a) an ellipse
b) a circle
c) a spiral
d) None of these

Correct Answer: a spiral

Question 65.A metallic ring is attached to the wall of a room. When the north pole of a magnet is brought near the ring, the induced current in the ring is

Options:
a) anticlockwise
b) clockwise
c) zero
d) infinite

Correct Answer: anticlockwise

Question 66.Differential Form of Gauss's Theorem can be represented as

Options:

Question 67.Ohm's Law is applicable to

Options:
a) Resistive Circuits
b) Reactive Circuits
c) Both Resistive Circuits & Reactive Circuits
d) None of these

Correct Answer: Both Resistive Circuits & Reactive Circuits

Question 68.Jule/ Coloumb is the unit of

Options:
a) electric field potential
b) potential
c) charge
d) none of these

Correct Answer: charge

Question 69.Kirchoff's current law at a junction deals with

Options:
a) conservation of energy
b) conservation of momentum
c) conservation of angular momentum
d) conservation of charge

Correct Answer: conservation of charge

Question 70.Thereni's theorem is ___________ form of an equivalent circuit

Options:
a) voltage
b) current
c) both voltage and current
d) None of these

Correct Answer: current

Question 71.A capacitor opposes

Options:
a) charge in current
b) charge in voltage
c) both charge in current and voltage
d) none

Correct Answer: both charge in current and voltage

Question 72.The main advantage of a temporary magnet is that we can

Options:
a) change the magnetic flux
b) use any magnetic material
c) decrease in hysteresis loss
d) none

Correct Answer: change the magnetic flux

Question 73.The emf induced in a coil of N turns is given by

Options:
a) dΦ / dt
b) N dΦ / dt
c) ­N dΦ / dt
d) N dt/dΦ

Correct Answer: N dΦ / dt

Question 74.In a step­up transformer, the turn's ratio is 1:2. A Leclancge cell (emf 1.5V) is connected across the primary. The voltage across the secondary is

Options:
a) 3.0 V
b) 0.75 V
c) 0 V
d) 1.5 V

Correct Answer: 0 V

Question 75.In the circuit shown below, the op­amps are ideal . Then Vou tin Volts is ­

Options:
a) 4
b) 8
c) 6
d) 10

Correct Answer: 8

Question 76.In the MOSFET amplifier of the figure, the signal output V₁ and V₂ obey the relationship­

c) V₁=2 V₂
d) V₁=­2 V₂

Correct Answer: V₁=2 V₂

Question 77.The capacitor of a CE amplifer appears to be

Options:
a) Open to ac
b) Shorted to dc
c) Open to supply voltage
d) Shorted to ac

Correct Answer: Shorted to ac

Question 78.At room temperature, the current in an intrinsic semiconductor is due to

Options:
a) holes
b) electrons
c) holes and electrons
d) ions

Correct Answer: holes and electrons

Question 79.If Thyristor is reverse biased, number of blocked P­N Junctions are

Options:
a) 1
b) 2
c) 3
d) 4

Correct Answer: 2

Question 80.A UJT exhibits negative resistance characteristics when

Options:
a) Current is less than valley current
b) Current is less than Peak current
c) Current is more than peak current but less than valley current
d) None of these

Correct Answer: Current is more than peak current but less than valley current

Question 81.The smallest of the four h­parameter of transistor is

Options:
a) hi
b) hr
c) ho
d) hf

Correct Answer: ho

Question 82.

Options:
a) Voltage Source
b) Capacitor
c) Current Source
d) Resistance

Correct Answer: Current Source

Question 83.Base of Bipolar Junction Transistor is

Options:
a) Larger than Emitter
b) Larger than Collector
c) Smaller than Emitter and Collector
d) Larger than emitter but smaller than Collector

Correct Answer: Smaller than Emitter and Collector

Question 84.LED gives off visible light from :

Options:
a) region off depletion layer
b) p region alone
c) n region alone
d) both p and n regions

Correct Answer: region off depletion layer

Question 85.In a common base transistor circuit I_C=0.97 μA, I_B=30μA the circuit gain α is

Options:
a) 0.97
b) 0.097
c) 95
d) 500

Correct Answer: 500Question 86.The loop gain of a Schmitt Trigger is always

Options:
a) 0
b) Less than 1
c) Greater than 1
d) None

Correct Answer: Greater than 1

Question 87.The capacitive effects of a reverse biased PN Junction are described by

Options:
a) Storage capacitance
b) Diffusion capacitance
c) Junction capacitance
d) All of these

Correct Answer: Junction capacitance

Question 88.In Insulators, the energy gap between valence and conduction bands is overlapped

Options:
a) very small
b) very large
c) overlapped
d) 1 eVCorrect

Answer: very large

Question 89.A field­effect transistor (FET)

Options:
a) has three pn junction
b) uses a forward biased junction
c) depends on the variation of a reverse voltage for its operation
d) depends on the variation of magnetic field for its operation

Correct Answer: depends on the variation of a reverse voltage for its operation

Question 90.In a feedback amplifier, de­sensitivity D equals

Options:
a) Aβ
b) 1­Aβ
c) 1+Aβ
d) 1/1+Aβ

Correct Answer: 1+Aβ

Question 91.The costliest coupling is

Options:
a) RC coupling
b) Direct coupling
c) Impedance coupling
d) Transformer coupling

Correct Answer: Transformer coupling

Question 92.A Zener diode is used as

a) an amplifier
b) a voltage regulator
c) a rectifier
d) a multivibrator

Correct Answer: a voltage regulator

Question 93.The noise margin of a TTL gate is about ­

Options:
a) 0.2 V
b) 0.4 V
c) 0.6 V
d) 0.8 V

Correct Answer: 0.4 V

Question 94.Bistable multivibrator is also known as­

Options:
a) Binary
b) Flip­flop
c) Eceless Jordan Circuit
d) All of these

Correct Answer: All of these

Question 95.The minimum number of two input NAND Gates required to implement two input NOR Gate is

Options:
a) 2
b) 3
c) 4
d) 5

Correct Answer: 4

Question 96.How is a J­K flip­flop made to toggle?

Options:
a) J = 1, K = 1
b) J = 0, K = 1
c) J = 1, K = 0
d) J = 0, K = 0

Correct Answer: J = 1, K = 1

Question 97.The minimum number of two input NOR & NAND gates required to implement a "Buffer function is _____

Options:
a) 2 NOR Gates
b) 2 NAND Gates
c) 1 NAND & 1 NOR Gate
d) All of these

Correct Answer: All of these

Question 98.A Shift register is operating/connected with 100 KHz clock. The time taken to feed the 2 Bytes of data serially in to it is ____

Options:
a) 2 μsec
b) 80 μsec
c) 160 μsec
d) 16 μsec

Correct Answer: 160 μsec

Question 99.A 12 MHz clock frequency is applied to a cascaded counter containing a modulus­5 counter, a modulus­8 counter, and two modulus­10 counters. The lowest output frequency possible is ________

Options:
a) 30 kHz
b) 3 kHz
c) 363.6 KHz
d) None of these

Question 100.A 4­bit R/2R digital­to­analog (DAC) converter has a reference of 5 volts. What is the analog output for the input code 1010.

Options:
a) 0.3125 V
b) 3.125 V
c) 1.5625 V
d) 3.75 V

Correct Answer: 3.125 V

Question 101.Signals from 4 channel sources are to be transmitted through a single transmission channel. The circuit that can be used is

Options:
a) code converter
b) decoder
c) multiplexer
d) all of these

Correct Answer: multiplexer

Question 102.In differential amplifier, CMRR can be improved by using an increased

Options:
a) emitter resistance
b) collector resistance
c) power supply voltages
d) source resistance

Correct Answer: emitter resistance

Question 103.Quantization error ocurres in __________ Systems

Options:
a) Analog to Digital Conversion
b) Digital to Analog Conversion
c) Both Analog to Digital Conversion & Digital to Analog Conversion
d) None of these

Correct Answer: Analog to Digital Conversion

Question 104.A flip­flop can store

Options:
a) 1 bit of data
b) 2 bits of data
c) 3 bits of data
d) 4 bits of data

Correct Answer: 4 bits of data

Question 105.Which of the following memories requires refreshing cycle?

Options:
a) RAM
b) ROM
c) dynamic MOS
d) All of these

Correct Answer: dynamic MOS

Question 106.Unit distance codes are also called as

Options:
a) Cyclic Codes
b) Non Cyclic codes
c) Error codes
d) All of these

Correct Answer: Cyclic Codes

Question 107.The number of NAND Gates required to implement Ex­OR and Ex­NOR gates are______respectively

Options:
a) 2 and 3
b) 3 and 2
c) 4 and 5
d) 4 and 3

Correct Answer: 4 and 5

Question 108.The device which selects one of the several inputs and transmits it to a single output is

Options:
a) decoder
b) multiplexer
c) de­multiplexer
d) counter

Correct Answer: multiplexer

Question 109.Which out of the following logic families is most expensive?

Options:
a) RTL
b) TTL
c) DTL
d) ECL

Correct Answer: RTL

Question 110.Switching speed of ECL logic is very high because

Options:
a) it uses positive logic
b) it uses negative logic
c) it uses high speed transistors
d) its transistors remain unsaturated

Correct Answer: its transistors remain unsaturated

Question 111.As the load is increased, the speed of a dc shunt motor ­

Options:
a) Increases proportionately
b) Remains constant
c) Increases slightly
d) Reduces slightly

Correct Answer: Reduces slightly

Question 112.At relatively light loads, transformer efficiency is low because­

Options:
a) Secondary output is low
b) Transformer losses are high
c) Fixed loss is high in proportion to the output
d) Cu loss is small

Correct Answer: Fixed loss is high in proportion to the outputQuestion 113.The function of a cycloconverter is to convert ­

Options:
a) AC power into DC power
b) Direct current to alternating current
c) High ac frequency directly to low ac frequency
d) A sine wave into a rectangular wave

Correct Answer: High ac frequency directly to low ac frequency

Question 114.In pulse width modulation of chopper­

Options:
a) T is kept constant and Ton is varied
b) Ton is kept constant T is varied
c) both T and Ton are varied
d) either T or Ton is varied

Correct Answer: T is kept constant and Ton is varied

Question 115.An electron having mass 'm' kg and charge 'e' coulomb travels from rest through a potential difference of 'V' volts. It has a kinetic energy of ?

Options:
a) mV joules
b) m eV joules
c) eV joules
d) m/e joules

Correct Answer: eV joules

Question 116.The maximum flux density in the core of a 250/3000­volts, 50­Hz single phase transformer is 1.2Wb/m2. If the e.m.f per turn is 8 volt. Then what is the value of primary and secondary turns

Options:
a) 208 & 32
b) 375 & 32
c) 208 & 375
d) 32 & 375

Correct Answer: 32 & 375

Question 117.In synchronous motor, damper winding is provided in order to

Options:
a) stabilize rotor motion
b) suppress rotor oscillation
c) develop necessary starting torque
d) both stabilize rotor motion and develop necessary starting torque

Correct Answer: both stabilize rotor motion and develop necessary starting torque

Question 118.Circuit turn­off time of an SCR is defined as the time

Options:
a) taken by the SCR turn to be off
b) required for the SCR current to become zero
c) for which the SCR is reverse biased by the commutation circuit
d) for which the SCR is reverse biased to reduce its current below the holding current

Correct Answer: for which the SCR is reverse biased by the commutation circuit

Question 119.Capacitors with solid dielectric materials are used because

Options:
a) they give a reduced dielectric loss
b) they are smaller in size as compared with air capacitors
c) they have a lower capacitance value as compared with air capacitors
d) none of these

Correct Answer: they are smaller in size as compared with air capacitors

Question 120.The output of three Phase simple half wave rectifier is also called as

Options:
a) Pulse number six
b) Pulse number three
c) Pulse number four
d) Pulse number two

Correct Answer: Pulsnumber three

Question 121.One TR (Unit of Refrigeration) is equal to

Options:
a) 3.157 KW
b) 5.317 KW
c) 3.715 KW
d) 3.517 KW

Correct Answer: 3.517 KW

Question 122.For extra high voltage lines which circuit breaker is preferred ?

Options:
a) SF6 gas circuit breaker
b) Bulk oil circuit breaker
c) Vacuum circuit breaker
d) Minimum oil circuit breaker

Correct Answer: SF6 gas circuit breaker

Question 123.In single phase full converter, for load current I ripple free, average thyristor current is ­­­­­­­­­­­

Options:
a) 1/4 I
b) 1/2 I
c) 3/4 I
d) I

Correct Answer: 1/2 I

Question 124.A carrier is simultaneously amplitude modulated by two sine waves with modulation indices of 0.4 and 0.3. The resultant modulation index will be:

Options:
a) 0.1
b) 0.5
c) 0.7
d) 0.35

Correct Answer: 0.5

Question 125.Indicate the wrong statement regarding modulation

Options:
a) Ensure that intellegence is transmitted over long distance
b) Separate differing transmission
c) Reduce the bandwidth used
d) Allows the use of practical antennas

Correct Answer: Reduce the bandwidth used

Question 126.Which one of the following modulation techniques has got maximum SNR

Options:
a) AM­SSB
b) AM­DSB
c) FM
d) AM­SC

Correct Answer: FMQuestion 127.The number of symbols in Quadrature phase shift keying is

Options:
a) Two
b) Four
c) Eight
d) Sixteen

Correct Answer: Four

Question 128.During amplitude modulation, the phase angle of the modulation voltage changes _______

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

Correct Answer: zero degree

Question 129.The modulation index of a phase modulated wave is __________

Options:
a) same as in frequency modulation
b) proportional to the modulating frequency
c) proprortional to the reciprocal of modulating frequency
d) proportional to the phase of modulating signal

Correct Answer: same as in frequency modulation

Question 130.Which of the following circuits transmits two messages simultaneously in one direction ?

Options:
a) Duplex
b) Simplex
c) Quadruplex
d) Diplex

Correct Answer: Diplex

Question 131.The signals contaminated with large noise are demodulated by ______________

Options:
a) envelop detector
b) synchronous detector
c) envelop detector followed by low pass filter
d) envelop detector followed by high pass filter

Correct Answer: synchronous detector

Question 132.The beat frequency between 1500 KHz and 1955 KHz will be ______________

Options:
a) 455 KHz
b) 100 KHz
c) 150 KHz
d) 195.5 KHz

Correct Answer: 455 KHz

Question 133.A trimmer is basically, a ______________

Options:
a) insulator
b) inductor
c) capacitor
d) variable resistor

Correct Answer: capacitor

Question 134.The quality factor Q of a cavity resonator at a given frequency for higher mode orders _____________

Options:
a) decreases
b) remains unaffected
c) increases
d) none of these

Correct Answer: increases

Question 135.The total information transmitted is proportional to ___________

Options:
a) bandwidth­time product
b) channel capacity
c) bandwidth­capacity product
d) none of these

Correct Answer: bandwidth­time product

Question 136.ISDN facility is available in following switching technologies'

Options:
a) E­10B
b) Cross­bar'
c) Strowger
d) OCB

Correct Answer: Strowger

Question 137.Which one of the following statement is not correct for a transmission line ?

A. Attenuation constant of a lossless line is always zero
B. Characteristic impedance of both lossless and distortionless line is real
C. Attenuation constant of a distortionless line is always zero.

Options:
a) A
b) B
c) C
d) Both A and C.

Correct Answer: C

Question 138.In electrical circuits states that for a response (voltage or current) in any branch of a bilateral linear circuit having more than one independent source equals the algebraic sum of the responses caused by each independent source acting alone

Options:
a) Norton Theorm
b) Thevnin Therom
c) Superposition Theorm
d) Duality Theorm

Correct Answer: Superposition Theorm

Question 139.In a certain parallel resonant band­pass filter, the resonant frequency is 14 kHz. If the bandwidth is 4 kHz, the lower frequency

Options:
a) is 12 kHz
b) is 7 kHz
c) is 10 kHz
d) cannot be determined

Correct Answer: is 12 kHz

Question 140.At a certain frequency, the output voltage of a filter is 6 V and the input is 12 V. The voltage ratio in decibels is

Options:
a) –12.04 dB
b) 12.04 dB
c) –6.02 dB
d) 6.02 dB

Correct Answer: –6.02 dB

Question 141.A 26 dBm output in watts equals to

Options:
a) 2.4W
b) 0.26W
c) 0.156W
d) 0.4W

Correct Answer: 0.4W

Question 142.The length of Physical Address (MAC) in IPV6 is

Options:
a) Same as that in IPV 4
b) More than that in IPV 4
c) Less than that in IPV 4
d) None of these

Correct Answer: Same as that in IPV 4

Question 143.Capacitance, Voltage and Charge are related as:

Options:
a) Q=CV
b) C=QV
c) V=QC
d) None of these

Correct Answer: Q=CV

Question 144.A network having a battery source in one of its arms is termed as ______________

Options:
a) Linear network
b) bilateral network
c) active network
d) passive network

Correct Answer: active network

Question 145.A m­derived LPF has f ∞ position ______________

Options:
a) above f_c
b) below f_c
c) at zero
d) at infinity

Correct Answer: above f_c

Question 146.Condition for minimum distortion at all frequencies for a transmission line is

Options:
a) LR=CG
b) LC=GR
c) LG=CR
d) None

Correct Answer: LC=GR

Question 147.If four 80 micro farad capacitors are connected in series, the net capacitance is

Options:
a) 20 micro farads
b) 40 micro farads
c) 160 micro farads
d) 320 microfarads

Correct Answer: 40 micro farads

Question 148.The Kirchoff s laws fail in

Options:
a) lumped parameters circuit
b) distributed parameter circuit
c) non linear circuits
d) linear circuits

Correct Answer: non linear circuits

Question 149.A coil has an inductance of 1 henry if a current changing at the rate of 1 amp/sec

Options:
a) induces 1 volt in another coil
b) causes a back emf of 1 volt
c) causes an aiding emf of 1 volt
d) causes transformer action.

Correct Answer: causes a back emf of 1 volt

Question 150. The current through the coil of an electromagnet is doubled. The magnetic field around the coil­

Options:
a) is halved
b) is doubled
c) becomes four times
d) remains the same

Correct Answer: is doubled

Question 151.A moving­coil permanent­magnet instrument can be used as _____ by using a low resistance shunt

Options:
a) voltmeters
b) ammeters
c) ohmmeters and resistance bridges
d) All of these

Correct Answer: ammeters

Question 152.Standard resistor is made from

Options:
a) platinum
b) manganin
c) silver
d) nichrome

Correct Answer: manganin

Question 153.Which of the following voltmeters would you use for measuring voltage across 20 kΩ resistance

Options:
a) Voltmeter having a resistance of 5 kΩ
b) Voltmeter having a sensitivity of 1 kW/V
c) Voltmeter having sensitivity of 10 kW/V
d) None of these

Correct Answer: Voltmeter having sensitivity of 10 kW/V

Question 154.In a measurement systems, which of the following static characteristic are desirable.

Options:
a) accuracy
b) sensitivity
c) reproducibility
d) All of these

Correct Answer: All of these

Question 155.PSK is ______________ type of modulation

Options:
a) Analog
b) Digital
c) Amplitude
d) Angle

Correct Answer: Digital

Question 156.The Speed of the Modems could be increased from 9.6 Kbps to Higher by

Options:
a) Increasing the Compression rate
b) Using High Class decoding
c) Use of Parity bits for error check
d) Simultaneous Transmission of Signals

Correct Answer: Use of Parity bits for error check

Question 157.The minimum standing waves occur where reflection coefficient is _________

Options:
a) zero
b) 1
c) ­1
d) none of these

Correct Answer: 1

Question 158.Attenuator have _____

Options:
a) attenuation constant
b) phase constant
c) gain and phase constant
d) attenuation and phase constant

Correct Answer: attenuation constant

Question 159.The quality factor 'Q' of an­inductance coil is improved

Options:
a) by reducing coil resistance to minimum
b) by increasing coil inductance­
c) by increasing coil resistance to the maximum
d) by reducing coil inductance.

Correct Answer: by increasing coil resistance to the maximum

Question 160.Moving coil meter is used to measure only ___

Options:
a) D.C.
b) A.C.
c) D.C. and A.C.
d) None of these

Correct Answer: D.C. and A.C.

Question 161.Energy is given by the product of

Options:
a) force and time
b) time and power
c) power and distance
d) force and distance

Correct Answer: power and distance

Question 162.The frequency range of vibrating reed frequency meter is ____

Options:
a) 67 Hz to 83 Hz
b) 50 Hz to 100 Hz
c) 47 Hz to 53 Hz
d) 60 Hz to 100 Hz

Correct Answer: 60 Hz to 100 Hz

Question 163.A feedback control system is shown in fig. The transfer function for this system is­

Question 164.If the gain of the loop system is doubled the gain margin of the system isQuestion 164.If the gain of the loop system is doubled the gain margin of the system is

Options:
a) Not Affected
b) Doubled
c) Halved
d) one fourth of orginal value

Correct Answer: Halved

Question 165.G(s)= 1/s(1+6s) the system is

Options:
a) Stable
b) Unstable
c) marginally Stable
d) Conditionally Stable

Correct Answer: marginally Stable

Question 166.Sinusoidal oscillator are

Options:
a) stable
b) Unstable
c) marginally Stable
d) Conditionally Stable

Correct Answer: Unstable

Question 167.With respect to root locus technique for construction of root locus, identify the false statement

Options:
a) The root locus is symmetrical about the real axis 䜨咪ट लोकस 途ἵरयल अ춲㵇 केसीमेिट뙊कल अ쑲 होता है।
b) The root locus technique is powerful tool for adjusting the location of closed loop poles to achieve the desired system performance by varying one or more system parametres.
c) segments of the real axis having an odd number of real axis open­loop poles plus zeros to their right are parts of the root locus.
d) None of these

Correct Answer: None of these

Question 168.In the standard form of closed loop transfer function of second order system is given by C(s)/R(s)= ω²_n /s²+2ςωns+ω²_n The damping ratio ς =1 then the roots are

Options:
a) purely imaginary
b) real and equal
c) real and unequal
d) None of these

Correct Answer: real and equal

Question 169.The statements that holds good for relative stability analysis is

Options:
a) Routh array method can not be used
b) graphical methods can not be used
c) graphical method can be used but Routh array can not be used
d) both graphical as well as Routh array can be used

Correct Answer: both graphical as well as Routh array can be used

Question 170.A servo system must have

Options:
a) feedback system
b) power amplifier to amplify error
c) capacity to control position or its derivative
d) all of these

Correct Answer: all of these

Question 171.For the characteristic equation 2s³ + 4s² + 4s + 12 = 0 the number of roots with positive real parts is __________

Options:
a) none
b) one
c) two
d) three

Correct Answer: two

Options:
a) linear system only
b) non linear system only
c) linear and time invariant system
d) linear and time variant system

Correct Answer: linear and time invariant system

Question 173.For a system having transfer function P(s)=2/(s+2), the phase shift will be

Options:
a) tan^­1(1/3)
b) 1/tan^­1(2/3)
c) tan^­1(3/4)
d) tan^­1(1/2)

Correct Answer: tan^­1(1/2)

Question 174.The temperature of a thermal system is analog of ___

Options:
a) Voltage
b) Current
c) Capacitance
d) Inductance

Correct Answer: Voltage

Question 175.Choose the non­linear systems from the following

Options:
a) Servo motors under saturation range operation
b) Temperature controlled furnace
c) Automatic voltage stabilizers
d) All of these

Correct Answer: All of these

Question 176.The contents of register (B) and accumulator (A) of 8085 microprocessor are 49H and 3AH respectively. The contents of A and status of carry (CY) and sign (S) after execution SUB B instructions are­

Options:
a) A = F1, CY = 1, S = 1
b) A = 0F, CY = 1, S = 1
c) A = F0, CY = 0, S = 0
d) A = 1F, CY = 1, S = 1

Correct Answer: A = 0F, CY = 1, S = 1

Question 177.If CS = A₁₅A₁₄A₁₃ is used as the chip select logic of a 4 K RAM in an 8085 system, then its memory range will be ­

Options:
a) 3000 H ­ 3 FFF H
b) 7000 H ­ 7 FFF H
c) 5000 H ­ 5 FFF H and 6000 H ­ 6 FFF H
d) 6000 H ­ 6 FFF H and 7000 H ­ 7 FFF H

Correct Answer: 7000 H ­ 7 FFF H

Question 178.Which interrupt has the highest priority?

Options:
a) INTR
b) TRAP
c) RST6.5
d) none of these

Correct Answer: TRAP

Question 179.For which of the following devices, is DMA the most suitable

Options:
a) Hard disk
b) Key board
c) Mouse
d) Joy Stick

Correct Answer: Hard disk

Question 180.The 8085 MUP is available in _______ pin DIP

Options:
a) 60
b) 40
c) 24
d) 14

Correct Answer: 40

Question 181.HOLD & HLDA pair provides the handshaking signals required for ____________operation

Options:
a) UART
b) USART
c) DMA
d) All

Correct Answer: DMA

Question 182."Cycle steal" operation is with

Options:
a) DMA controller
b) Interrupt Controller
c) Keyboard Display Controller
d) Microcontroller

Correct Answer: DMA controller

Question 183.Thyristor chopper circuits are emplyed for

Options:
a) lowering the level of a d.c. voltage
b) rectifying the a.c. voltage
c) frequency conversion
d) providing commutating circuitry

Correct Answer: lowering the level of a d.c. voltage

Question 184.Find the incorrect pascal reserved word

Options:
a) AND
b) END
c) VAR
d) ELSEIF

Correct Answer: ELSEIF

Question 185.Microprocessor is

Options:
a) ALU and memory on a single chip
b) ALU and I/O devices on a single chip
c) ALU and control unit on a single chip
d) ALU, register unit and control unit on a single chip

Correct Answer: ALU, register unit and control unit on a single chip

Question 186.Stack pointer ________ bit register.

Options:
a) 4
b) 8
c) 16
d) 32

Correct Answer: 8

Question 187. 8085 operates with

Options:
a) 1 MHz single phase clock
b) 2 MHz single phase clock
c) 2 MHz two phase clock
d) 3 MHz single phase clock

Correct Answer: 2 MHz two phase clock

Question 188.The address bus of 8085 MPU is

Options:
a) multi directional
b) bi­directional
c) unidirectional
d) None of these

Correct Answer: None of these

Question 189.You can add a row using SQL in a database with which of the following?

Options:
a) ADD
b) CREATE
c) INSERT
d) MAKE

Correct Answer: INSERT

Question 190.SQL stands for ________ .

Options:
a) Structured Query Language
b) Sequential Query Language
c) Structured Question Language
d) Sequential Question Language

Correct Answer: Structured Query Language

Question 191.Window is _______________ Window है:

Options:
a) GUI based free OS
b) Non­GUI based free OS
c) GUI based not free OS
d) Non­GUI based not free OS

Correct Answer: GUI based not free OS

Question 192.Windows OS isिवंडो OS है:

Options:
a) Open Source OS
b) Closed Source OS
c) Open Source but with restrictions
d) None of these

Correct Answer: Closed Source OS

Question 193.Printer is

Options:
a) Input device
b) Output device
c) Memory Device
d) It is not a device

Question 194.In database , Data manipulation language (DML) is not to

Options:
a) create information table in the Database
b) Insertion of new information in to the database
c) Deletion of information in the database
d) Updation of information in the database

Correct Answer: create information table in the Database

Question 195.An active element in a circuit is one

Options:
a) receives energy
b) supplies energy
c) both receives and supplies energy
d) none of these

Correct Answer: supplies energy

Question 196.One Giga Byte is equal to

Options:
a) 2²⁰ Bytes
b) 2³⁰ Bytes
c) 20² Bytes
d) 10² Bytes

Correct Answer: 2³⁰ Bytes

Question 197.DMA 8237 provides _____________ DMA channel.

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

Correct Answer: 4

Question 198.The number of flow lines leaving a decision box is __________

Options:
a) 3 only
b) 1 only
c) 2 only
d) more than 2

Correct Answer: 2 only

Question 199.The standard punched card is divided into ___________ columns and __________rows.

Options:
a) 12, 40
b) 40,20
c) 80,12
d) 80,20

Correct Answer: 80,12

Question 200.The third generation computers could perform calculations in______________

Options:
a) milliseconds
b) microseconds
c) nanoseconds
d) pecoseconds

Correct Answer: pecoseconds
 

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