Junior Engineer (CPWD) Examination
Scheme of Examination:
The examination will be conducted in two parts :
A. Written Test (500 marks)
B. Interview (100 marks)
Written Test: It will consist of two papers.
Paper Subject No. Of Questions Marks
a) General Awareness 25 50
b) General Engineering(Civil & Structural) 75 150
General Engineering(Electrical & Mechanical) 75 150
General Engineering(Civil & Structural)
General Engineering(Electrical & Mechanical)
NOTE I: Paper I will be Objective type multiple choice.
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 English language.
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.
B. 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 personality etc.
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.
1. General Awareness:
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.
2. 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,
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,
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 penetration test.
Fluid properties, hydrostatics, measurements of flow, Bernoulli’s theorem and its
application, flow through pipes, flow in open channels, weirs, flumes, spillways, pumps and
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 circular section.
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 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 andtheir 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 synchronousmotors.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, interconnectionof power stations.Power factor improvement, various types of tariffs, types of faults, short circuit current forsymmetrical 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 protectionof generators & transformers, protection of feeders and bus bars.Lightning arresters, Various transmission and distribution systems, Comparison of conductormaterials, 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 &
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 machines.
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
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 governors.