apeasternpower.cgg.gov.in Download Hall Ticket 2015 Sub Engineer APEPDCL : Eastern Power Distribution Company of Andhra Pradesh

Organisation : Eastern Power Distribution Company of Andhra Pradesh Limited APEPDCL EPDCL
Announcement : Hall Ticket Download
Designation : Sub Engineer Electrical 2015

Download your Hall Ticket here : visakhaepdclht1254.cgg.gov.in/EPSearchHTicketbusaht206.epdcl
Home Page : http://apeasternpower.cgg.gov.in/

Please download the hall-tickets for the written test to the post of Sub-Engineer / El. to be held on 26.07.2015 from 10:30 AM to 12:00 Noon in Visakhapatnam against the notification dt.28.04.2015 at apeasternpower.cgg.gov.in.

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SYLLABUS
I. ELECTRICAL MACHINES:
D.C. GENERATORS And MOTORS: Expression for emf equation of D.C.Generaor, armature windings, armature reaction, types of generators, characteristics. Torque equation of D.C.Motor, characteristics, speed control,starters, losses and efficiency. Testing of D.C. Machines.

TRANSFORMERS: emf equation of single phase transformer, operation of transformer on load, equivalent circuit, vector diagram, open-circuit and short-circuit tests, voltage regulation, losses and efficiency, all-day efficiency, parallel operation of single-phase transformers with equal voltage ratios. Voltage and current relations for three-phase transformer connections. Principle of operation of auto-transformer. Cooling of power transformer, Operation of Buchhloz’s relay.

ALTERNATION AND SYNCHRONOUS MOTORS: Salient-pole and cylindrical rotor types of construction. Alternator EMF equation and windings, armature reaction, voltage regulation using synchronous impedance, open-circuit and short-circuit tests, voltage variation against load currents at different power factors, parallel operation of alternators; synchronization by lamps method and synchroscope. Synchronous motors: Starting methods, effect of change of excitation at constant load, Vcurves, Hunting, synchronous condenser.

THREE-PHASE INDUCTION MOTORS: Constructional aspects of cage and wound rotor types of induction motors, expression for torque, torque-ship characteristics, full load torque, starting torque and maximum torque, effects of variation of rotor resistance; losses and efficiency; different starting methods; speed control methods.

SINGLE-PHASE INDUCTION MOTORS AND COMMUTATOR MOTORS: Constructional features and operation of single-phase induction motors: split phase, capacitor and shaded pole types. Principle of operation of A.C. series motor, universal motor, Schrage motor.

II. POWER GENERATION AND SWITCHGEAR AND PROTECTION:
HYDRO-POWER PLANTS: Functions of different components of Hydel stations, water power equation, surge tank, choice of turbines, storage and pondage; base load and peak load operation, pumped storage plant.

THERMAL POWER PLANTS: Plant line diagram and functions of different components of coal-fired steam power plant; boilers, steam turbines, condensers, superheater, economizer, cooling towers, chimney.

NUCLEAR PLANT: Schematic arrangement and functions of different components in nuclear power reactor.

COMBINED OPERATION OF POWER PLANTS AND ECONOMIC ASPECTS: Advantage of combined operation of Hydel and Thermal power plants; Load and Load duration curves, load factor, diversity factor and demand factor, capacity factor; types of tariffs, factors influencing tariff design.

FAULTS AND SWITCHING APPARATUS: Short-circuit calculations; fuses and isolators; circuit breakers: theory of arc interruption and different types of oil circuit breakers; lightning arresters and their selection and location.

PROTECTIVE RELAYING: Basic requirements of protective relaying, primary and back-up protection; classification of electromagnetic relays and their principles of operation; time current characteristic curves; induction type over-current relay, distance relays; Merz price protection, differential protection of transformers, bus bar protection.

III. TRANSMISSION AND DISTRIBUTION:
LINE CONDUCTORS, LINE SUPPORTS AND SAG CALCULATIONS: Different types of line conductors, conductor sizes commonly used for different voltage levels, Types of line supports, factors influencing the selection, cross-arms; spans, conductor spacings and ground clearances. Sag calculations and stringing charts.

TRANSMISSION LINE PARAMETERS: Determination of inductance and capacitance of round and parallel conductors in single phase and three-phase symmetrically spaced lines.

PERFORMANCE OF LINES: Choice of voltage; short, medium and long lines; calculation of sending-end voltage, regulation and efficiency for short lines; nominal and nominal-T methods; Ferranti effect; corona: critical voltages and factors affecting corona.

INSULATORS AND SUBSTATIONS: Different types of insulators: Pin type, strain type, suspension type and relative merits; voltage distribution across string of suspension insulators, string efficiency and methods of improving arcing horns. Equipment used in substations, bus-bar arrangements.

CABLE AND DISTRIBUTION SYSTEMS: Comparison between overhead lines and under ground cable. Types of cables, insulation resistance; localization of cable faults. Primary and secondary distribution; Feeders and service mains; radial and ring systems of distribution; singlephase a.c. distribution.

IV. MEASURING INSTRUMENTS AND ELECTRIC CIRCUITS:
MEASURING INSTRUMENTS: Indicating instruments: deflecting, controlling and damping torques, pointers and scales; ammeters and voltmeters: moving coil, moving iron, dynamometer, induction types; instrument transformers: C.T and P.T., Wattmeters and measurement of power in three phase systems by two-wattmeter method; measurement of energy: Energy meters; M.D. indicators; trivector meter.

ELECTRIC CIRCUITS: Fundamentals of alternating current quantities, sinusoidal waveform; average and effective values; J-notation for A.C quantities; polar form; single phase series and parallel circuits; impedance triangle, phase, power factor, active and reactive components of power; series and parallel resonance. Three-phase star and delta balanced systems.

V. UTILIZATION OF ELECTRICAL ENERGY:
ELECTRIC DRIVES: Factors governing selection of motors; matching of motors with given loads; electric braking; rating of motor; types of enclosures; motors for particular drive.

ILLUMINATION: Definitions of commonly used terms and units; types of lamps; requirement of good lighting; laws of illumination; terms like : depreciation factor, utilization factor, waste light factor, luminous efficiency, specific energy consumption, space height ratio.

ELECTRIC HEATING AND WELDING: Requirements of good heating materials, materials generally employed, resistance heating; electric furnace; induction heating; dielectric heating welding generator and transformers.