Industrial Extension Officer coaching Basic Electronics Semiconductor

December 19, 2018


EEE made easy
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Q .A semiconductor has ………… temperature coefficient of resistance.

Positive
Zero
Negative.....
None of the above

Q A semiconductor is formed by ……… bonds.

Covalent.....
Electrovalent
Co-ordinate
None of the above

Q.The most commonly used semiconductor is ………..

Germanium
Silicon....
Carbon
Sulphur

Q. A semiconductor has generally ……………… valence electrons.

2
3
6
4....

Q. The resistivity of pure germanium under standard conditions is about ……….

6 x 104Ω cm
60Ω cm....
3 x 106Ω cm
6 x 10-4Ω cm

Q.The resistivity of a pure silicon is about ……………

100 Ω cm
6000 Ω cm.....
3 x 105 Ω m
6 x 10-8 Ω cm

Q. When a pure semiconductor is heated, its resistance …………..

Goes up
Goes down....
Remains the same
Can’t say

Q.When a pentavalent impurity is added to a pure semiconductor, it becomes ………

An insulator
An intrinsic semiconductor
p-type semiconductor
n-type semiconductor.....

Q. Addition of pentavalent impurity to a semiconductor creates many ……..

Free electrons....
Holes
Valence electrons
Bound electrons

Q. A pentavalent impurity has ………. Valence electrons

3
5....
4
6

Q. An n-type semiconductor is ………

Positively charged
Negatively charged
Electrically neutral...
None of the above

Q. A trivalent impurity has ….. valence electrons

4
5
6
3.....

Q. Addition of trivalent impurity to a semiconductor creates many ……..

Holes...
Free electrons
Valence electrons
Bound electrons

Q. A hole in a semiconductor is defined as …………….

A free electron
The incomplete part of an electron pair bond..
A free proton
A free neutron

Q. The impurity level in an extrinsic semiconductor is about ….. of pure semiconductor.

10 atoms for 108 atoms
1 atom for 108 atoms....
1 atom for 104 atoms
1 atom for 100 atoms

Q. As the doping to a pure semiconductor increases, the bulk resistance of the semiconductor ………..

Remains the same
Increases
Decreases....
None of the above

Q.A hole and electron in close proximity would tend to ……….

Repel each other
Attract each other....
Have no effect on each other
None of the above

Q. In a semiconductor, current conduction is due to ……..

Only holes
Only free electrons
Holes and free electrons....
None of the above

Q. The random motion of holes and free electrons due to thermal agitation is called ……….

Diffusion....
Pressure
Ionisation
None of the above

Q. At room temperature, an intrinsic silicon crystal acts approximately as ……

A battery
A conductor
An insulator....
A piece of copper wire
Q. A forward biased pn junction diode has a resistance of the order of

Ω...


None of the above

Q. The battery connections required to forward bias a pn junction are ……

+ve terminal to p and –ve terminal to n...
-ve terminal to p and +ve terminal to n
-ve terminal to p and –ve terminal to n
None of the above

Q. The barrier voltage at a pn junction for germanium is about ………

5 V
3 V
Zero
0.3 V.....

Q. In the depletion region of a pn junction, there is a shortage of ……..

Acceptor ions
Holes and electrons....
Donor ions
None of the above

Q.A reverse bias pn junction has …………

Very narrow depletion layer
Almost no current....
Very low resistance
Large current flow

Q.A pn junction acts as a ……….

Controlled switch
Bidirectional switch
Unidirectional switch....
None of the above

Q. A reverse biased pn junction has resistance of the order of

Ω

MΩ....
None of the above

Q. The leakage current across a pn junction is due to …………..

Minority carriers....
Majority carriers
Junction capacitance
None of the above

Q.When the temperature of an extrinsic semiconductor is increased, the pronounced effect is on……

Junction capacitance
Minority carriers....
Majority carriers
None of the above

Q. With forward bias to a pn junction , the width of depletion layer ………

Decreases....
Increases
Remains the same
None of the above

Q.  The leakage current in a pn junction is of the order of

Aa
mA
kA
µA....

Q. In an intrinsic semiconductor, the number of free electrons ………

Equals the number of holes....
Is greater than the number of holes
Is less than the number of holes
None of the above

Q. At room temperature, an intrinsic semiconductor has ……….

Many holes only
A few free electrons and holes....
Many free electrons only
No holes or free electrons

Q. At absolute temperature, an intrinsic semiconductor has ……….

A few free electrons
Many holes
Many free electrons
No holes or free electrons....

QThe strength of a semiconductor crystal comes from ……..

Forces between nuclei
Forces between protons
Electron-pair bonds.....
None of the above

Industrial Extension Officer coaching Basic Electronics Semiconductor Industrial Extension Officer coaching Basic Electronics Semiconductor Reviewed by Bibi Mohanan on December 19, 2018 Rating: 5

Industrial Extension officer coaching Basic Civil Engineering

December 08, 2018

Industries Extension Officer Coaching
Basic Civil engineering

1. The hardest rock is
a. Marble
b. Diamond ….
c. Talc
d. Quartz
2. The tendency of a stone to split along
a. Texture
b. Fracture
c. Cleavage….
d. Structure
3. The cracks which extend from bark towards the sap wood in the cross section of a tree are called
a. Radial shakes
b. Star shakes…..
c. Heart shakes
d. Cup shakes
4. A well seasoned timber may contain moisture up to
a. 4 to 6%
b. 6 to 8 %
c. 8 to 10 %
d. 10 to 12 % ……..
5. Soundness of a cement is tested by
a. Vicat’s apparatus
b. Le –Chatlier apparatus…….
c. Compressive strength testing apparatus
d. None of these
6. Stones used for the construction of retaining walls must be
a. Soft
b. Hard
c. Light
d. Heavy…….
7. The rocks which are formed due to pouring of magma at the earth’s surface are called
a. Plutonic rocks
b. Hypabyssal rocks
c. Volcanic rocks……
d. Igneous rocks
8. Plywood is made from
a. Common timber
b. Bamboo fiber
c. Teak wood only…….
d. Asbestos sheets
9. Clay and slit content in a good brick earth must be atleast
a. 50%....
b. 40%
c. 30%
d. 25%
10. A badly mixed cement concrete results in
a. Segregation
b. Bleeding
c. Honey combing……
d. None of these
11.


Industrial Extension officer coaching Basic Civil Engineering Industrial Extension officer coaching Basic Civil Engineering Reviewed by Bibi Mohanan on December 08, 2018 Rating: 5

Industries Extension Officer Coaching Basic Civil engineering

December 05, 2018

Industries Extension Officer Coaching
Basic Civil engineering

1. The hardest rock is
a. Marble
b. Diamond ….
c. Talc
d. Quartz
2. The tendency of a stone to split along
a. Texture
b. Fracture
c. Cleavage….
d. Structure
3. The cracks which extend from bark towards the sap wood in the cross section of a tree are called
a. Radial shakes
b. Star shakes…..
c. Heart shakes
d. Cup shakes
4. A well seasoned timber may contain moisture up to
a. 4 to 6%
b. 6 to 8 %
c. 8 to 10 %
d. 10 to 12 % ……..
5. Soundness of a cement is tested by
a. Vicat’s apparatus
b. Le –Chatlier apparatus…….
c. Compressive strength testing apparatus
d. None of these
6. Stones used for the construction of retaining walls must be
a. Soft
b. Hard
c. Light
d. Heavy…….
7. The rocks which are formed due to pouring of magma at the earth’s surface are called
a. Plutonic rocks
b. Hypabyssal rocks
c. Volcanic rocks……
d. Igneous rocks
8. Plywood is made from
a. Common timber
b. Bamboo fiber
c. Teak wood only…….
d. Asbestos sheets
9. Clay and slit content in a good brick earth must be atleast
a. 50%....
b. 40%
c. 30%
d. 25%
10. A badly mixed cement concrete results in
a. Segregation
b. Bleeding
c. Honey combing……
d. None of these
11.


Industries Extension Officer Coaching Basic Civil engineering Industries Extension Officer Coaching
Basic Civil engineering Reviewed by Bibi Mohanan on December 05, 2018 Rating: 5

DC motor objective questions for Industrial extension officer ssc JE Electrical

December 04, 2018

DC MOTOR
1. In a dc Motor, unidirectional torques is produced with the help of
a. Brushes
b. Commutator
c. End plates
d. Both a and b….
2. The counter emf of a dc motor
a. Often exceeds the supply voltage
b. Aids the applied voltage
c. Helps in energy conversion….
d. Regulates its armature voltage
3. The normal value of the armature resistance of a dc motor is
a. 0.005
b. 0.5 ….
c. 10
d. 100
4. The Eb/V ratio of dc motor is an indication of its
a. Efficiency…..
b. Speed regulation
c. Starting torque
d. Running torque
5. The mechanical power developed by the armature of a dc motor is equal to
a. Armature current multiplied by back emf….
b. Power input minus losses
c. Power output multiplied by efficiency
d. Power output plus iron losses
6. The induced emf in the armature conductors of a dc motor is
a. Sinusoidal….
b. Trapezoidal
c. Rectangular
d. Alternating
7. A dc motor can be looked upon as a dc generator with the power flow
a. Reduced
b. Reversed……
c. Increased
d. Modified
8. In a dc motor, the mechanical output power actually comes from
a. Field system
b. Air gap flux
c. Back emf
d. Electrical input power……
9. The maximum torque of dc motors is limited by
a. Commutation…….
b. Heating
c. Speed
d. Armature current
10. Which of the following quantity maintains the same direction whether a dc machine runs as a generator or as a motor?
a. Induced emf……
b. Armature current
c. Field current
d. Supply current
11. Under constant load conditions, the speed of a dc motor is affected by
a. Field flux…….
b. Armature current
c. Back emf
d. Both b and c
12. The current drawn by a 120 V dc motor of armature resistance 0.5 ohm and back emf 110V is ------- Ampere
a. 20…….
b. 240
c. 220
d. 5
13. As the load is increased, the speed of the DC Motor
a. Increases proportionately
b. Remains constant
c. Increases slightly
d. Reduces slightly……
14. Between no load and full load , -------- motor develops the least torque.
a. Series…….
b. Shunt
c. Cumulative compound
d. Differential compound
15. When load is removed,  ------- motor will run at the highest speed.
a. Shunt
b. Cumulative compound
c. Differential compound
d. Series……
16. A series motor is best suited for driving
a. Lathes
b. Cranes and hoists……
c. Shears and punches
d. Machine tools
17. The Ta/Ia graph of a dc series motor is a
a. Parabola from no load to overload
b. Straight line throughout,…..
c. Parabola throughout
d. Parabola upto full load and a straight line at overloads


DC motor objective questions for Industrial extension officer ssc JE Electrical DC motor objective questions for Industrial extension officer ssc JE Electrical Reviewed by Bibi Mohanan on December 04, 2018 Rating: 5

Industrial Extension Officer Kerala PSc Coaching Part 1

November 04, 2018

Industrial Extension Officer Kerala PSC Coaching Part 1

Industrial Extension Officer Kerala PSC Coaching 


Hi Friends,

In this post I would like to discuss about the Industrial extension officer exam Coaching. This exam is Conducted by Kerala PSC to the Dept of Industry and Commerce.

Category Number is 125/2018

You can read more details by clicking here.

you can watch the video below.

 details






The coaching class already started in EEE Made Easy you tube channel. 

You can get the study material in EEE Made Easy Blog.

You can watch the classes here.




Industrial Extension Officer Kerala PSc Coaching Part 1



You can download the pdf here.









Industrial Extension Officer Kerala PSc Coaching Part 1 Industrial Extension Officer Kerala PSc Coaching Part 1 Reviewed by Bibi Mohanan on November 04, 2018 Rating: 5

SSC GK Quiz 1

November 02, 2018

1. Preliminary expenses are the examples of ________.




2. Which economic activity cannot be included in the tertiary sector?




3. Which one of the following is not correctly matched?




4. Which of the following statement is true for the Public Sector Unit?



    Most of assets is owned by government
5. According to Indian Constitution, who decides the salary of members of Parliament?




6. Panchayat Samiti at the block level in India is a/an _________.




7. Who said, "A good citizen makes a good state and a bad citizen makes a bad state"?




8. Which of the following thinker is associated with "the concept of political sovereignty"?




9. Which of the following five year plan of India recognized human development as the core of development efforts?


    Tenth five year plan

10. The percentage of India's population in the total population of the world as per 2011 census is: _______.





Show me the answers!
Question 1: The correct answer is the Answer 1.
Question 2: The correct answer is Answer 3.
Question 3: The correct answer is Answer 2.
Question 4: The correct answer is Answer 4.
Question 5: The correct answer is Answer 2.
Question 6: The correct answer is Answer 4.
Question 7: The correct answer is Answer 2.
Question 8: The correct answer is Answer 3
Question 9: The correct answer is Answer 1.
Question 10: The correct answer is Answer 1.


You answered them all right!

SSC GK Quiz 1 SSC GK Quiz 1 Reviewed by Bibi Mohanan on November 02, 2018 Rating: 5

Current Electricity objective questions in Electrical Engineering

October 27, 2018

Current Electricity objective questions in Electrical Engineering



The substances which have a large number of free
electrons and offer a low resistance are called
(a) insulators
(b) inductors
(c) semi-conductors
(d) conductors
Ans: d

Out of the following which is not a poor conductor ?
(a) Cast iron
(b) Copper
(c) Carbon
(d) Tungsten
Ans: b

Out of the following which is an insulating material ?
(a) Copper
(b) Gold
(c) Silver
(d) Paper
Ans: d

Conductance is reciprocal of
(a) resistance
(b) inductance
(c) reluctance
(d) capacitance
Ans: a

With rise in temperature the resistance of pure metals
(a) increases
(b) decreases
(c) first increases and then decreases
(d) remains constant
Ans: a

With rise in temperature the resistance of semiconductors
(a) decreases
(b) increases
(c) first increases and then decreases
(d) remains constant
Ans: a

The resistance of a copper wire 200 m long is 21 Q. If its
thickness (diameter) is 0.44 mm, its specific resistance is
around
(a) 1.2 x 10~8 Q-m
(b) 1.4 x 10~8 Q-m
(c) 1.6 x 10″”8 Q-m
(d) 1.8 x 10″8 Q-m
Ans: c

An instrument which detects electric current is known
as
(a) voltmeter
(b) rheostat
(c) wattmeter
(d) galvanometer
Ans: d

A light bulb draws 300 mA when the voltage across it is
240 V. The resistance of the light bulb is
(a) 400 Q
(b) 600 Q
(c) 800 Q
(d) 1000 Q
Ans: c

In a circuit a 33 Q resistor carries a current of 2 A. The
voltage across the resistor is
(a) 33 V
(b) 66 v
(c) 80 V
(d) 132 V
Ans: b

Four wires of same material, the same cross-sectional
area and the same length when connected in parallel give a
resistance of 0.25 Q. If the same four wires are connected is
series the effective resistance will be
(a) 1 Q
(b) 2 Q
(c) 3 Q
(d) 4 Q
Ans: d

Which of the following material has nearly zero
temperature co-efficient of resistance?
(a) Manganin
(b) Porcelain
(c) Carbon
(d) Copper
Ans: a


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Current Electricity objective questions in Electrical Engineering Current Electricity objective questions in Electrical Engineering Reviewed by Bibi Mohanan on October 27, 2018 Rating: 5

Syllabus and Exam Pattern for SSC JE 2018-19

October 16, 2018

Syllabus and Exam Pattern for SSC JE 2018-19


Papers
Date of Exam
Subject
Max
Marks
Duration &
Timings
Paper-I
Objective Type
Computer Based
5th to 8th January
2018
(i) General
Intelligence
& Reasoning
50
2 Hrs
(ii) General
Awareness
50
(iii)
Part – A
Civil & Structural
OR
Part-B
Electrical
OR
Part-C
Mechanical
100
Paper-II
Conventional Type Written Exam
To be
Notified
Later
Part –A
General Engineering
(Civil & Structural)
OR
Part-B
General Engineering (Electrical)
OR
Part-C
General Engineering (Mechanical)


The details of the syllabus are given below:

Paper-I
(i)         General Intelligence & Reasoning: The Syllabus for General Intelligence would include questions of both verbal and non-verbal type. The test may include questions on analogies, similarities, differences, space visualization, problem solving, analysis, judgement, decision making, visual memory, discrimination, observation, relationship concepts, arithmetical reasoning, verbal and figure classification, arithmetical number series etc. The test will also include questions designed to test the candidate‟s abilities to deal with abstract ideas and symbols and their relationships, arithmetical computations and other analytical functions.
(ii)        General Awareness: Questions will be aimed at testing the candidate‟s general awareness of the environment around him/her 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 neighbouring countries especially pertaining to History, Culture, Geography, Economic Scene, General Polity and Scientific Research, etc. These questions will be such that they do not require a special study of any discipline.
                          (iii)       General Engineering (Civil and Structural), (Electrical & Mechanical):
Part-A
Civil Engineering
Building Materials, Estimating, Costing and Valuation, Surveying, Soil Mechanics, Hydraulics, Irrigation Engineering, Transportation Engineering, Environmental Engineering.
Structural Engineering: Theory of Structures, Concrete Technology, RCC Design, Steel Design.

Part-B
Electrical Engineering
Basic concepts, Circuit law, Magnetic Circuit, AC Fundamentals, Measurement and Measuring instruments, Electrical Machines, Fractional Kilowatt Motors and single phase induction Motors, Synchronous Machines, Generation, Transmission and Distribution, Estimation and Costing, Utilization and Electrical Energy, Basic Electronics.

Part-C
Mechanical Engineering – Theory of Machines and Machine Design, Engineering Mechanics and Strength of Materials,
Properties of Pure Substances, 1st Law of Thermodynamics, 2nd Law of Thermodynamics, Air standard Cycles for IC Engines, IC Engine Performance, IC Engines Combustion, IC Engine Cooling & Lubrication, Rankine cycle of System, Boilers, Classification, Specification, Fitting & Accessories, Air Compressors & their cycles, Refrigeration cycles, Principle of Refrigeration Plant, Nozzles & Steam Turbines.
Properties & Classification of Fluids, Fluid Statics, Measurement of Fluid Pressure, Fluid kinematics, Dynamics of Ideal fluids, Measurement of Flow rate, basic principles, Hydraulic Turbines, Centrifugal Pumps, Classification of steels.
Paper II
Part-A : Civil & Structural Engineering

Civil Engineering
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.
Estimating, Costing and Valuation: estimate, glossary of technical terms, analysis of rates, methods and unit of measurement, Items of work – earthwork, Brick work (Modular & Traditional bricks), RCC work, Shuttering, Timber work, Painting, Flooring, Plastering. Boundary wall, Brick building, Water Tank, Septic tank, Bar bending schedule, Centre line method, Mid-section formula, Trapezodial formula, Simpson‟s rule. Cost estimate of Septic tank, flexible pavements, Tube well, isolates and combined footings, Steel Truss, Piles and pile-caps. Valuation – Value and cost, scrap value, salvage value, assessed value, sinking fund, depreciation and obsolescence, methods of valuation.
Surveying : Principles of surveying, measurement of distance, chain surveying, working of prismatic compass, compass traversing, bearings, local attraction, plane table surveying, theodolite traversing, adjustment of theodolite, Levelling, Definition of terms used in levelling, contouring, curvature and refraction corrections, temporary and permanent adjustments of dumpy level, methods of contouring, uses of contour map, tachometric survey, curve setting, earth work calculation, advanced surveying equipment.
Soil Mechanics : Origin of soil, phase diagram, Definitions-void ratio, porosity, degree of saturation, water content, specific gravity of soil grains, unit weights, density index and interrelationship of different parameters, Grain size distribution curves and their uses. Index properties of soils, Atterberg‟s limits, ISI soil classification and plasticity chart. Permeability of soil, coefficient of permeability, determination of coefficient of permeability, Unconfined and confined aquifers, effective stress, quick sand, consolidation of soils, Principles of consolidation, degree of consolidation, pre-consolidation pressure, normally consolidated soil, e-log p curve, computation of ultimate settlement. Shear strength of soils, direct shear test, Vane shear test, Triaxial test. Soil compaction, Laboratory compaction test, Maximum dry density and optimum moisture content, earth pressure theories, active and passive earth pressures, Bearing capacity of soils, plate load test, standard penetration test.
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.
Irrigation Engineering: Definition, necessity, benefits, 2II effects of irrigation, types and methods of irrigation, Hydrology – Measurement of rainfall, run off coefficient, rain gauge, losses from precipitation – evaporation, infiltration, etc. Water requirement of crops, duty, delta and base period, Kharif and Rabi Crops, Command area, Time factor, Crop ratio, Overlap allowance, Irrigation efficiencies. Different type of canals, types of canal irrigation, loss of water in canals. Canal lining – types and advantages. Shallow and deep to wells, yield from a well. Weir and barrage, Failure of weirs and permeable foundation, Slit and Scour, Kennedy‟s theory of critical velocity. Lacey‟s theory of uniform flow. Definition of flood, causes and effects, methods of flood control, water logging, preventive measure. Land reclamation, Characteristics of affecting fertility of soils, purposes, methods, description of land and reclamation processes. Major irrigation projects in India.
Transportation Engineering: Highway Engineering – cross sectional elements, geometric design, types of pavements, pavement materials – aggregates and bitumen, different tests, Design of flexible and rigid pavements – Water Bound Macadam (WBM) and Wet Mix Macadam (WMM), Gravel Road, Bituminous construction, Rigid pavement joint, pavement maintenance, Highway drainage, Railway Engineering- Components of permanent way – sleepers, ballast, fixtures and fastening, track geometry, points and crossings, track junction, stations and yards. Traffic Engineering – Different traffic survey, speed-flow-density and their interrelationships, intersections and interchanges, traffic signals, traffic operation, traffic signs and markings, road safety.
Environmental Engineering: Quality of water, source of water supply, purification of water, distribution of water, need of sanitation, sewerage systems, circular sewer, oval sewer, sewer appurtenances, sewage treatments. Surface water drainage. Solid waste management – types, effects, engineered management system. Air pollution – pollutants, causes, effects, control. Noise pollution – cause, health effects, control.

Structural Engineering
Theory of structures: Elasticity constants, types 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 rectangular & circular sections, 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, importance of water 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 structures.
RCC Design: RCC beams-flexural strength, shear strength, bond strength, design of singly reinforced and double reinforced beams, cantilever beams. T-beams, lintels. One way and two way slabs, isolated footings. Reinforced brick works, columns, staircases, retaining wall, water tanks (RCC design questions may be based on both Limit State and Working Stress methods).
Steel Design: Steel design and construction of steel columns, beams roof trusses plate girders.

Part-B (Electrical Engineering):

Basic concepts : Concepts of resistance, inductance, capacitance, and various factors affecting them. Concepts of current, voltage, power, energy and their units.
Circuit law : Kirchhoff‟s law, Simple Circuit solution using network theorems.
Magnetic Circuit : Concepts of flux, mmf, reluctance, Different kinds of magnetic materials, Magnetic calculations for conductors of different configuration e.g. straight, circular, solenoidal, etc. Electromagnetic induction, self and mutual induction.
AC Fundamentals: Instantaneous, peak, R.M.S. and average values of alternating waves, Representation of sinusoidal wave form, simple series and parallel AC Circuits consisting of R.L. and C, Resonance, Tank Circuit. Poly Phase system – star and delta connection, 3 phase power, DC and sinusoidal response of R-Land R-C circuit.
Measurement and measuring instruments: Measurement of power (1 phase and 3 phase, both active and re-active) and energy, 2 wattmeter method of 3 phase power measurement. Measurement of frequency and phase angle. Ammeter and voltmeter (both moving oil and moving iron type), extension of range wattmeter, Multimeters, Megger, Energy meter AC Bridges. Use of CRO, Signal Generator, CT, PT and their uses. Earth Fault detection.
Electrical Machines : (a) D.C. Machine – Construction, Basic Principles of D.C. motors and generators, their characteristics, speed control and starting of D.C. Motors. Method of braking motor, Losses and efficiency of D.C. Machines. (b) 1 phase and 3 phase transformers – Construction, Principles of operation, equivalent circuit, voltage regulation, O.C. and S.C. Tests, Losses and efficiency. Effect of voltage, frequency and wave form on losses. Parallel operation of 1 phase /3 phase transformers. Auto transformers. (c) 3 phase induction motors, rotating magnetic field, principle of operation, equivalent circuit, torque-speed characteristics, starting and speed control of 3 phase induction motors. Methods of braking, effect of voltage and frequency variation on torque speed characteristics.
Fractional Kilowatt Motors and Single Phase Induction Motors: Characteristics and applications.
Synchronous Machines - Generation of 3-phase e.m.f. armature reaction, voltage regulation, parallel operation of two alternators, synchronizing, control of active and reactive power. Starting and applications of synchronous motors.
Generation, Transmission and Distribution – Different types of power stations, Load factor, diversity factor, demand factor, 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 arc extinction by oil and air, H.R.C. Fuses, Protection against earth leakage / over current, etc. Buchholtz relay, Merz-Price system of protection of generators & transformers, protection of feeders and bus bars. Lightning arresters, various transmission and distribution system, comparison of conductor materials, efficiency of different system. Cable – Different type of cables, cable rating and derating factor.
Estimation and costing : Estimation of lighting scheme, electric installation of machines and relevant IE rules. Earthing practices and IE Rules.
Utilization of Electrical Energy : Illumination, Electric heating, Electric welding, Electroplating, Electric drives and motors.
Basic Electronics : Working of various electronic devices e.g. P N Junction diodes, Transistors (NPN and PNP type), BJT and JFET. Simple circuits using these devices.

Part- C (Mechanical Engineering):

Theory of Machines and Machine Design
Concept of simple machine, Four bar linkage and link motion, Flywheels and fluctuation of energy, Power transmission by belts – V-belts and Flat belts, Clutches – Plate and Conical clutch, Gears – Type of gears, gear profile and gear ratio calculation, Governors – Principles and classification, Riveted joint, Cams, Bearings, Friction in collars and pivots.
Engineering Mechanics and Strength of Materials
Equilibrium of Forces, Law of motion, Friction, Concepts of stress and strain, Elastic limit and elastic constants, Bending moments and shear force diagram, Stress in composite bars, Torsion of circular shafts, Bucking of columns – Euler‟s and Rankin‟s theories, Thin walled pressure vessels.


Thermal Engineering
Properties of Pure Substances : p-v & P-T diagrams of pure substance like H2O, Introduction of steam table with respect to steam generation process; definition of saturation, wet & superheated status. Definition of dryness fraction of steam, degree of superheat of steam. H-s chart of steam (Mollier‟s Chart).
1st Law of Thermodynamics : Definition of stored energy & internal energy, 1st Law of Thermodynamics of cyclic process, Non Flow Energy Equation, Flow Energy & Definition of Enthalpy, Conditions for Steady State Steady Flow; Steady State Steady Flow Energy Equation.
2nd Law of Thermodynamics : Definition of Sink, Source Reservoir of Heat, Heat Engine, Heat Pump & Refrigerator; Thermal Efficiency of Heat Engines & co-efficient of performance of Refrigerators, Kelvin – Planck & Clausius Statements of 2nd Law of Thermodynamics, Absolute or Thermodynamic Scale of temperature, Clausius Integral, Entropy, Entropy change calculation of ideal gas processes. Carnot Cycle & Carnot Efficiency, PMM-2; definition & its impossibility.
Air standard Cycles for IC engines : Otto cycle; plot on P-V, T-S Planes; Thermal Efficiency, Diesel Cycle; Plot on P-V, T-S planes; Thermal efficiency.
IC Engine Performance, IC Engine Combustion, IC Engine Cooling & Lubrication.
Rankine cycle of steam : Simple Rankine cycle plot on P-V, T-S, h-s planes, Rankine cycle efficiency with & without pump work.
Boilers; Classification; Specification; Fittings & Accessories : Fire Tube & Water Tube Boilers.
Air Compressors & their cycles; Refrigeration cycles; Principle of a Refrigeraton Plant; Nozzles & Steam Turbines
Fluid Mechanics & Machinery
Properties & Classification of Fluid : ideal & real fluids, Newton‟s law of viscosity, Newtonian and Non-Newtonian fluids, compressible and incompressible fluids.
Fluid Statics: Pressure at a point.
Measurement of Fluid Pressure: Manometers, U-tube, Inclined tube.
Fluid Kinematics: Stream line, laminar & turbulent flow, external & internal flow, continuity equation.
Dynamics of ideal fluids: Bernoulli‟s equation, Total head; Velocity head; Pressure head; Application of Bernoulli‟s equitation.
Measurement of Flow rate Basic Principles: Venturimeter, Pilot tube, Orifice meter.
Hydraulic Turbines: Classifications, Principles.
Centrifugal Pumps: Classifications, Principles, Performance.
Production Engineering
Classification of Steels : mild steal & alloy steel, Heat treatment of steel, Welding – Arc Welding, Gas Welding, Resistance Welding, Special Welding Techniques i.e. TIG, MIG, etc. (Brazing & Soldering), Welding Defects & Testing; NDT, Foundry & Casting – methods, defects, different casting processes, Forging, Extrusion, etc, Metal cutting principles, cutting tools, Basic Principles of machining with (i) Lathe (ii) Milling (iii) Drilling (iv) Shaping (v) Grinding, Machines, tools & manufacturing processes.
Syllabus and Exam Pattern for SSC JE 2018-19 Syllabus and Exam Pattern for SSC JE 2018-19 Reviewed by Bibi Mohanan on October 16, 2018 Rating: 5

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