SCHEME OF EXAMINATION:
The
written test comprising of 100 marks consisting of 100 multiple choice questions
and each question carrying 1 mark. The section A consisting of 80 questions on
core technical subject and the section B consisting of 20 Questions
SYLLABUS FOR
WRITTEN EXAMINATION –SUB-ENGINEERs(ELECTRICAL)-2016
Part-A (80 Questions)
UNIT 1: Basic
Electrical Engineering
Ohms
law and Kirchhoff‟s laws, Star/Delta transformation, Network theorems, Power
and Energy, Heating effects of electric current, Magnetic effects, Electromagnetic
induction, Electrostatics. Batteries, Types of Electrical engineering materials
– Conducting, Semi-conducting, Magnetic, Insulating, Di-electric
UNIT II: D.C.
Machines & Measurements
D.C.Generators:
Construction, Operation, Types, EMF Equation, Windings, Characteristics, Efficiency
and Parallel operation. DC Motors: Principle of operation, Back EMF, Torque
Equation, Types, Characteristics, Starters, Speed Control, Losses, Efficiency
and Testing. Measuring Instruments: Classification, Principle &f Operation
of Moving Coil, Moving Iron, Dynamometer type and Induction type meters.
Instrument Transformers, Induction type Energy meter, M.D. Indicator, Tri
Vector Meter, Power factor meter, Frequency meter, Measurement of Resistance,
Transducers and Sensors – Types, Thermistor, Thermo-couple, Pressure
Transducers and Strain gauges, Working of Cathode ray oscilloscope
UNIT III: A.C. Circuits
and Transformers
A.C.
Circuits: Fundamentals, Series and parallel R-L-C Circuits, Resonant circuits,
Three-phase circuits, Measurement of power by two Wattmeters. Transformers:
Single-phase Transformer, Construction, Operation, Equivalent circuit,
Regulation, Efficiency, Testing and parallel operation, Three-phase Alternators:
Construction, Operation, EMF equation, regulation, testing and Synchronous
Motors: Operation and performance, Effects of excitation, V - Curve and
inverted V - Curve, Methods of starting and uses. Three-Phase induction Motors:
Construction, Principle of Operation, Torque Equation, Slip-torque
characteristics, Losses & efficiency, Speed control, Single-phase Motors:
Types, Principle of operation, characteristics and applications of induction
motors and commutator motors
UNIT V: Power
System Generation & Protection Generating Stations:
Working
components, Comparison of Thermal, Hydel, and Nuclear stations, Pollution
control, Combined Working, Power Station auxiliaries, Characteristic Curves and
Important definitions, Types of tariffs, Power factor correction and economy. Power
Systems Protection: Circuit Breakers - Types, Principles of operation and uses.
Current Limiting reactors, Relays – Classification, Principle of Operation of
Induction type over current relay, Directional and Non-directional relays, Differential
relays and Distance relays, Protection of Alternations, Transformers, Bus-bars,
Transmission lines, Lightening arrestors, Neutral
UNIT VI:
Transmission and Distribution Transmission:
Types
of supply systems, Transmission Line parameters, inductance and capacitance,
performance of short and medium lines, regulation, Ferranti effect, Corona,
Basic concepts of HVDC Transmission, Advantages and disadvantages of HVDC
Transmission. Components of lines, supports, conductor spacing, ground
clearance and sag, insulators, voltage distribution across the string, string
efficiency, methods of improving string efficiency, Earthing and layout of
sub-stations. Cables – Classification, insulation resistance, specifications, Distribution
– Radial and ring type distributions, variation of load voltage,
UNIT VII:
Utilization and Electric Drives Lighting:
Laws
of Illumination, Types of Lamps, Lighting Schemes for indoor, outdoor, street
and factory. Heating and Welding: Principles and application of different
resistance heating, direct and indirect arc furnaces, core and core-less
induction furnaces, dielectric heating, Welding generators & welding
transformers. Electric Traction: Systems of Train Electrification, Speed-time
Curves for different services, Schedule speed, Tractive Effort, Specific Energy
Consumption, Traction system auxiliaries, Traction motors. Electric Drives:
Different Types, nature of load, Rating of motors, Types of enclosures, Motors
for different drives. Electric Braking - Dynamic braking and Counter-current
braking of dc motors and 3-phase induction motors.
UNIT VIII: Electrical
Estimation and Automation Electrical Wiring:
Tools,
Wires, Types of wiring, Accessories, Lamp Circuits, Estimating and Costing of
domestic, industrial power, irrigation pump sets, Rural electrification,
departmental tests, earthing. Automation: Basics of control system, Basic principles
of Programmable Logic controller (PLC), Parts of PLC, Simple applications with
PLC.
UNIT IX: Basic Electronics
and Digital Electronics Semi-Conductor Devices:
N
Type & P type, Zener diode, PNP and NPN Transistors, Transistor
configurations, input and output characteristics, power supplies – half wave
and full wave rectifiers. Filters, Zener diode, regulation, Special
devices-UJT, FET, LED, SCR, Opto-Coupler, Photo diode, Photo Transistor. Amplifiers:
Types, Principles of operation, Characteristics RC coupled, Transformer coupled
and Direct coupled amplifiers. Class A amplifiers, Push- pull amplifiers,
Feed-back, Difference and Operational amplifiers Oscillators and Electronic
Testers, Function Generators, Industrial application of timers, Basics of IC‟s.
Digital Electronics: Different numbering systems, Inter Conversions, Boolean Algebra,
Logic families, Performance of AND, OR, NOT, NOR, NAND gates, Combinational
logic circuits, Sequential logic circuits, Registers and Memories, A/D and D/A
converters.
UNIT X: Power
Electronics and Micro Controller Power Electronic Devices:
Construction
and working of SCR, GTO, DIAC, TRIAC, Volt-ampere characteristics, Trigging of
SCR using UJT Protection. Convertors: Types of Phase-controlled Convertors,
Working of AC regulators and Choppers. Types & basic principle of working
of Inverters and Cycloconvertors. Speed control: Speed control of D.C.Motors
using convertors and choppers, Speed control of induction motor using AC Voltage
regulators and V/f Control, Switched mode power supplies (SMPS), UPS. Micro-Controllers:
Architecture and Instruction set of 8051, Programming concepts, peripheral IC‟s
– Function, features, Pin details and interfacing of 8255, 8251, 8279, 8257,
8259, RS-232.
Part-B (20Q)
1. Numerical Ability
(Indices, Ratios, Proportions, Profit & Loss, Menstruation, Algebra,
Geometry and Statistics) Language proficiency (Vocabulary, Sentence
corrections, Reading comprehension).
2. Computer Awareness
3. General Knowledge Socio-economic,
Political and Cultural History of Telangana with special emphasis on Telangana Statehood.