Electrical
Engineering Syllabus
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 coil 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.
