CENTRAL POWER DISTRIBUTION COMPANY OF A.P.LTD. MINT COMPOUND :: HYDERABAD –04. |
NOTIFICATION
Applications are invited for the post of Sub-Engineer/Electrical on regular basis with the eligible candidates possessing DEE/DEEE/LEE from any of institutions recognized by State or Central Government. Candidates possessing BE/B.Tech/AMIE in Electrical Engineering discipline are also eligible.
Sd/-
DIRECTOR (HRD & IR)
Note:-
Detailed Notification will be placed shortly at www.apcentralpower.com.
SELECTION PROCEDURE:
i) The selection of candidates for appointment will be made purely based on written
examination without oral Interview duly following the Rule of Reservation/Local
area reservation and other terms notified or modified from time to time
ii) Only those candidates who qualify in the written examination by being ranked
high, community wise will be called for verification of Original Certificates in 1:1
ratio.
(iii) The minimum qualifying marks in the written test for the above selection
process shall be as follows:
OC - 40%
BC - 35%
SC/ST - 30%
Or as per Rules
Note: Mere securing minimum qualifying marks doesn’t vest, any right to a
candidate for being called for verification of original certificates and by mere calling the candidate for certificate verification in the ratio of 1:1 doesn’t vest any right to a candidate for selection.
Details of Written Examination:
Date of examination: The written examination will be held on 12.12.2010 from 10 A.M. to 12 Noon.
SYLLABUS FOR WRITTEN EXAMINATION –SUB-ENGINEERs(ELECTRICAL)-2010
UNIT 1: BASIC ELECTRICAL ENGINEERING
Ohms and Kirchhoff’s Laws, star/delta transformation, Network theorems, Power and
Energy, Heating effects of Electric current, Magnetic effects, Electro magnetic induction,
Electrostatics. Batteries, Types of Electrical Engineering Materials – Conducting, Semiconducting,
Magnetic, Insulating, Di-electric – Properties and Uses.
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 of Operation of moving Coil, Moving Iron,
Dynamometer type, Induction type meters. Instrument Transformers, Induction type Energy
meter, M.D.Indicator, TRI VECTOR Meter, PP Meter, Frequency meter, Measurement of
Resistance, Transducers and Sensors – Types, Thermistor, Thermocpuple, Pressure
Transducers and Strain gauges.
UNIT III: A.C.CIRCUITS AND TRANSFORMERS
A.C.Circuits: Fundamentals, Series and parallel R-L-C Circuits, Resonant circuits,
Polyphase circuits, Measurement of power by 2 Wattmeters.
Transformer: Single-phase Transformer, Construction, Operation, Equivalent circuit,
Polyphase Circuits, Measurement of power by 2 Wattmaters.
UNIT IV: A.C.MACHINES
Alternators: Construction, Operation, EMF equation, regulation, testing and parallel
operation.
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,
Sliptorque characteristics, losses, efficiency, speed control, starters, double-cage motor.
Single-phase induction Motor: Types, Principle of operation, applications, single-phase
commutator motors: Types, Principle of operation and applications.
UNIT V: POWER SYSTEM GENERATION & PROTECTION
Generating Stations: Working, components, Comparison of Thermal, Hydel, Nuclear
stations, Pollution control, Combined Working, Power Stations auxiliaries, Characteristic
Curves and Important Terms, 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 types
over current relay, Directional and Non-directional relays, differential relays and distance
relays, Protection of alternations, Transformers, Bus-bars, transmission lines, Lightening
arrestors, neutral grounding.
UNIT VI: TRANSMISSION AND DISTRIBUTION AND ELECTRIC BRAKING
Transmission and distribution: 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, Advantage and disadvantages of
HVDC Transmission.
Components of lines, supports, conductor spacing, ground clearance and sag, insularors,
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
distributors, variation of load voltage, Electric Braking – types of braking.
UNIT VII: ELECTRIC UTILISATION AND TRACTION
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, di-electric 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 motor.
UNIT VIII: ELECTRICAL ESTIMATION, ELECTRIC DRIVES 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.
Electric Drives: Different Types, nature of load, rating of motor types of enclosures, motor
for different drives.
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 confitgurations, input and output characteristics, power supplies – half and full
wave rectifiers. Filters Zener diode regulation, Special devices-JT, FET,LED, SCR, Opto
Coupler, Photo diode, Photo Transistor.
Amplifiers: Types, Principles of operation, Characteristics
Oscillators: Types, Operation and application of each.
Modulation and De-Modulation: Principle of AM & FM systems, CRO-Working, Electronic
Testers, Advantages, 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, Resistors and Memories, A/D and D/A converters.
UNIT X: POWER ELECTRONICS AND MICRO CONTROLLER
Power Electronic Devices: Construction and working of SCR, GTOSCR, DIAC, TRIAC,
Voltampere characteristics, Trigging of SCR using UJT Protection.
Convertors, AC regulators, Choppers, Invertors and Cycloconvertors:
Types of Convertors, Working of AC regulators and choppers. Types of invertors, Principles
of working, Basic principle of working of Cycloconvertors.
Speed control of D.C.Motors by using convertors and choppers, Speed control of induction
motor by; using AC Voltage regulators-V/f Control, Switched mode power supplies (SMPS),
UPS.
Micro Controllers: Architecture of 8051, Instruction set of 8051, Programming concepts,
peripheral ICS – Function, features, Pin details and interfacing of 8255,8251, 8279, 8257,
8259, RS-232.
The Question paper consists of one hundred multiple choice objective type questions, to be
answered on the OMR Answer sheet using HB pencil in 2 hours.
SELECTION PROCEDURE:
i) The selection of candidates for appointment will be made purely based on written
examination without oral Interview duly following the Rule of Reservation/Local
area reservation and other terms notified or modified from time to time
ii) Only those candidates who qualify in the written examination by being ranked
high, community wise will be called for verification of Original Certificates in 1:1
ratio.
(iii) The minimum qualifying marks in the written test for the above selection
process shall be as follows:
OC - 40%
BC - 35%
SC/ST - 30%
Or as per Rules
Note: Mere securing minimum qualifying marks doesn’t vest, any right to a
candidate for being called for verification of original certificates and by mere calling the candidate for certificate verification in the ratio of 1:1 doesn’t vest any right to a candidate for selection.
Details of Written Examination:
Date of examination: The written examination will be held on 12.12.2010 from 10 A.M. to 12 Noon.
SYLLABUS FOR WRITTEN EXAMINATION –SUB-ENGINEERs(ELECTRICAL)-2010
UNIT 1: BASIC ELECTRICAL ENGINEERING
Ohms and Kirchhoff’s Laws, star/delta transformation, Network theorems, Power and
Energy, Heating effects of Electric current, Magnetic effects, Electro magnetic induction,
Electrostatics. Batteries, Types of Electrical Engineering Materials – Conducting, Semiconducting,
Magnetic, Insulating, Di-electric – Properties and Uses.
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 of Operation of moving Coil, Moving Iron,
Dynamometer type, Induction type meters. Instrument Transformers, Induction type Energy
meter, M.D.Indicator, TRI VECTOR Meter, PP Meter, Frequency meter, Measurement of
Resistance, Transducers and Sensors – Types, Thermistor, Thermocpuple, Pressure
Transducers and Strain gauges.
UNIT III: A.C.CIRCUITS AND TRANSFORMERS
A.C.Circuits: Fundamentals, Series and parallel R-L-C Circuits, Resonant circuits,
Polyphase circuits, Measurement of power by 2 Wattmeters.
Transformer: Single-phase Transformer, Construction, Operation, Equivalent circuit,
Polyphase Circuits, Measurement of power by 2 Wattmaters.
UNIT IV: A.C.MACHINES
Alternators: Construction, Operation, EMF equation, regulation, testing and parallel
operation.
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,
Sliptorque characteristics, losses, efficiency, speed control, starters, double-cage motor.
Single-phase induction Motor: Types, Principle of operation, applications, single-phase
commutator motors: Types, Principle of operation and applications.
UNIT V: POWER SYSTEM GENERATION & PROTECTION
Generating Stations: Working, components, Comparison of Thermal, Hydel, Nuclear
stations, Pollution control, Combined Working, Power Stations auxiliaries, Characteristic
Curves and Important Terms, 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 types
over current relay, Directional and Non-directional relays, differential relays and distance
relays, Protection of alternations, Transformers, Bus-bars, transmission lines, Lightening
arrestors, neutral grounding.
UNIT VI: TRANSMISSION AND DISTRIBUTION AND ELECTRIC BRAKING
Transmission and distribution: 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, Advantage and disadvantages of
HVDC Transmission.
Components of lines, supports, conductor spacing, ground clearance and sag, insularors,
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
distributors, variation of load voltage, Electric Braking – types of braking.
UNIT VII: ELECTRIC UTILISATION AND TRACTION
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, di-electric 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 motor.
UNIT VIII: ELECTRICAL ESTIMATION, ELECTRIC DRIVES 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.
Electric Drives: Different Types, nature of load, rating of motor types of enclosures, motor
for different drives.
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 confitgurations, input and output characteristics, power supplies – half and full
wave rectifiers. Filters Zener diode regulation, Special devices-JT, FET,LED, SCR, Opto
Coupler, Photo diode, Photo Transistor.
Amplifiers: Types, Principles of operation, Characteristics
Oscillators: Types, Operation and application of each.
Modulation and De-Modulation: Principle of AM & FM systems, CRO-Working, Electronic
Testers, Advantages, 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, Resistors and Memories, A/D and D/A converters.
UNIT X: POWER ELECTRONICS AND MICRO CONTROLLER
Power Electronic Devices: Construction and working of SCR, GTOSCR, DIAC, TRIAC,
Voltampere characteristics, Trigging of SCR using UJT Protection.
Convertors, AC regulators, Choppers, Invertors and Cycloconvertors:
Types of Convertors, Working of AC regulators and choppers. Types of invertors, Principles
of working, Basic principle of working of Cycloconvertors.
Speed control of D.C.Motors by using convertors and choppers, Speed control of induction
motor by; using AC Voltage regulators-V/f Control, Switched mode power supplies (SMPS),
UPS.
Micro Controllers: Architecture of 8051, Instruction set of 8051, Programming concepts,
peripheral ICS – Function, features, Pin details and interfacing of 8255,8251, 8279, 8257,
8259, RS-232.
The Question paper consists of one hundred multiple choice objective type questions, to be
answered on the OMR Answer sheet using HB pencil in 2 hours.
very good
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