Staff Selection Commission
SSC: Junior Engineer (CPWD)
SCHEME OF EXAMINATION :
The examination will be conducted in two parts :
A. Written Test (500 marks)
B. Interview (100 marks)
Part I: Written Test: It will consist of two papers:-
Paper Subject No. Of Questions Marks
I a) General Awareness 25 50
b) General Engineering 75 150
(Civil & Structural)
(Electrical & Mechanical) 75 150
Total 100 200
II General Engineering(Civil & Structural) 300
General Engineering(Electrical & Mechanical) 300
Note I: Paper I will be Objective type
Note II: Paper II will be of conventional type.
Note III: Paper I and II will be bi-lingual (i.e. in Hindi and
English). Candidates will have option to answer Paper II either in Hindi or in
Note IV: Paper II will be evaluated in respect of only those
candidates who qualify in Paper I at the minimum standard which may be decided
by the Commission at its discretion.
Note V: Only those candidates who attain minimum qualifying
standard in Part-I of the
Examination, as may be fixed by the Commission in their discretion, will be
eligible to be called for Personality Test/Interview.
Part II: Personality Test (Interview): 100 marks
The interview/personality test is structured in such a manner that the
candidates’ interest, knowledge, various traits, aptitude, suitability etc. are
probed among other things, through academic qualifications, experience,
extra-curricular activities, general awareness/knowledge, depth of knowledge of
the subjects studied (10+2 onwards), communicative skill and over-all
Candidates called for interview/personality test, have the option to converse
either in Hindi or English language during the interview process.
The standard of the questions in Engineering subjects will be approximately on
the level of Diploma in Engineering (Civil/ Electrical/ Mechanical) from a
recognized Institute, Board or University and recognized by All India Board of
Technical Education. All the questions will be set in SI units.
Questions will be aimed at testing the candidate’s general
awareness of the environment around him and its application to society.
Questions will also be designed to test knowledge of current events and of
such matters of everyday observations and experience in their scientific
aspect as may be expected of any educated person. The test will also include
questions relating to India and its neighboring countries especially
pertaining to Sport, History, Culture, Geography, Economic Scene, General
Polity, Indian Constitution and Scientific Research, etc. These questions
will be such that they do not require a special study of any discipline.
General Engineering (Civil and Structural)
Building Materials: Physical and
Chemical properties, classification, standard tests, uses and
manufacture/quarrying of materials e.g. building stones, silicate based
materials, cement (Portland), Asbestos products, Timber and Wood based
Products, laminates, bituminous materials, paints, varnishes.
Surveying: Principles of surveying, working of properties,
compass and bearing, plane table surveying, theodolite traverse, adjustment
of theodolite, levelling and contouring, curvature, refraction, permanent
adjustment of dumpy level, methods of contouring and uses of a control map,
Soil Mechanics: Origin of soil phase diagram, definitions of void
ratio, porosity, degree of saturation, water content, specific gravity of
soil grains and unit weights, grain size distribution curves for different
solid and their uses. Atterjerg’s limits, ISI soil classification,
plasticity chart, coefficient of permeability, effective stress,
consolidation of soils.
Calculation of shear strength of soils, direct shear test, vane shear test,
triaxial test, soil compaction, Lab compaction, Lab compaction test,
moisture content and bearing capacity of soils, plate load test, standard
Hydraulics: Fluid properties, hydrostatics, measurements of
flow, Bernoulli’s theorem and its application, flow through pipes, flow in
open channels, weirs, flumes, spillways, pumps and turbines.
Environmental Engineering: Quality of water, source of
water supply, purification of water, distribution of water, need of
sanitation, sewerage system, circular sewers, oval sewer, sewer
appurtenances, surface water drainage, sewage treatments.
Structural Engineering : Theory of structures: Elasticity
constants, type of beams, determinate and indeterminate, bending moment and
shear force diagrams of simply supported, cantilever and over hanging beams.
Moment of area and moment of inertia for rect. & circular section, bending
moment and shear stress for tee, channel and compound sections, chimneys,
dams and retaining walls, eccentric loads, slope deflection of simply
supported and cantilever beams, critical load and columns, torsion of
Concrete Technology : Properties, Advantages and uses of
concrete, cement aggregates quality, water cement ratio, workability, mix
design, storage, batching, mixing, placement, compaction, finishing and
curing of concrete, quality control of concrete, hot weather and cold
weather concreting, repair and maintenance of concrete structure.
RCC beams: flexural strength, shear
strength, bond strength, design of single reinforced beans, lintels,
cantilever beams, double reinforced beams, one way slabs, two way slabs,
isolated footings, reinforced brick work. T-beams, columns, staircases,
retaining walls, water tanks (RCC design questions may be based on both
Limit State method and Working Stress method).
Steel Design: Steel design and construction of steel
columns, beams, roof trusses, plate girders.
3. General Engineering (Electrical and Mechanical)
Basic Electrical Engg.: Elect.
Measurements, Concepts of current, voltage, resistance, power and energy,
their units, Ohm’s law.
Circuit Law: Kirchooff’s law, solution of simple network
problems, Network theorems and their applications, Electro-magnetism,
concept of flux, e m f, reluctance, magnetic circuits.
Electro-magnetic induction, self and mutual inductance.
A.C. fundamentals, instantaneous, peak, R.M.S. and
average values of alternating waves, Equation of sinusoidal wave form,
simple series and parallel AC. circuits consisting of R.L. and C, Resonance.
Measurement and measuring instruments, Moving coil and
moving iron ammeters and voltmeters, Extension of range, Wattmeters,
Multimeters, megger, Basic Electronics.
Electrical machines: Basic principles
ofD.C. motors, generators, their characteristics, Speed control and starting
of D.C. motors, losses and efficiency of D.C. machines. 1-Phase and 3-phase
Transformers: Principles of operation, equivalent circuit, voltage
regulation, O.C. and S.C. tests, efficiency, auto transformers.
Synchronous machines, generation of 3-phase e m f, armature reaction,
Voltage regulation, parallel operation of two alternators, synchronizing,
starting and applications of synchronous motors.
3-Phase Induction motor, rotating magnetic field, principle of operation,
equivalent circuit, torque-speed characteristics, starting and speed control
of 3-phase induction motors, Fractional KW motors, 1-phase induction motors,
A.C. series motor, reluctance motor.
General, Transmission and Distribution: Different types of
power stations, Load factor, diversity factor, demand factor, simple
problems thereon, cost of generation, inter- connection of power stations.
Power factor improvement, various types of tariffs, types of faults, short
circuit current for symmetrical faults.
Switchgears- rating of circuit breakers: Principles of a extinction by oil
and air, H.R.C. fuses, Protection, earth leakage, over current, Buchhotgz
relay, Merz- Prince system of protection of generators & transformers,
protection of feeders and bus bars.
Lightning arresters, Various transmission and distribution systems,
Comparison of conductor materials, efficiency for different systems.
Utilization of Electrical Energy, Illumination, electric heating, Electric
welding, electroplating, electric drives and motors.
Flow of Fluids: Laminar & turbulent
flow, equation of continuity, Bernoulli’s theorem, measurement of discharge,
flow through pipes, friction losses, Forces of jet impinging on vanes,
blades, work done and efficiency, classification of turbines & pumps.
Laws of thermodynamics, change in entropy in various processes; uses of
steam, Properties of steam table & charts; Construction & Working of
Cochran, Lancashire locomotive & Babcock & Wilcox boilers, working of steam
turbine, Otto & Diesel Cycles, working of IC engines, Carburetion, Solex
Carburettor. Diesel fuel, pump & injector: Cooling & lubrication.
Production Engineering: Foundry- Different casting
processes, concept of Patterns; types of mould making, purring defect in
castings, causes & remedies, Welding-classification and types of welding,
Testing and defects in welds. Lathes- working of lathe, various tools,
operation on lathes, types of lathes. Drilling operations performed on
drilling machines. Description, principles of working and various operations
on machine tools, milling machine, shaper, grinder, boring and slotting
Strength of Materials: Stresses in composite bars, relation
between elastic constants, Resilience under different types of loads, SF and
BM diagrams; stresses in beams-combined direct and bending stresses, Struts
and columns – Euler’s and Rankin’s theories, Torsion of circular shafts.
Theory of Machines: Simple Machines – Four bar chain,
Slider crank chain, double slider crank chain, Flywheel – Turning moment
diagrams. Fluctuation of energy, Friction-in collar and pivots, plate
clutch, conical clutch, journal bearing. Transmission of power through flat
and V-belts, Gears, profile of gears, Governors- Watt and Hartnell