Semiconductor device physics, PN junctions and transistors,
circuit models and parameters, FET, Zener, tunnel, Schottky, photo diodes and
their applications, rectifier circuits, voltage regulators and multipliers,
switching behavior of diodes and transistors.
Small signal amplifiers, biasing circuits, frequency response
and improvement, multi-stage amplifiers and feed-back amplifiers, D.C.
amplifiers, Oscillators. Large signal amplifiers, coupling methods, push pull
amplifiers, operational amplifiers and wave shaping circuits. Multi-vibrators
and flip-flops and their applications. Digital logic gate families, universal
gate combinational circuits for arithmetic and logic operation, sequential logic
circuits. Counters, registers, RAM and RGMs.
3.1 Basic concepts in rotating machines. EMF, torque, basic
machine types. Construction and operation, leakage, losses and efficiency.
3.2 Direct current machines : Generation of EMF, work, power,
Torque equation, armature winding, armature, reaction, theory of commutation,
Inter-poles & compensating windings, characteristics of shunts, series and
compound generators, parallel running and load sharing of generators,
Construction, Excitation methods. Circuit models characteristic and performance
analysis. Generators and motors. Starting and speed control. Testing. Losses and
3.3 Synchronous machines. Construction. Circuit model.
Operating characteristics and performance analysis. Synchronous reactance.
Efficiency. Voltage regulation. Salient-pole machine. Parallel operation.
Hunting. Short circuit transients.
3.4 Induction Machines. Construction. Principle of operation.
Rotating fields, Characteristics and performance analysis. Determination of
circuit model. Circle diagram, Starting and speed control, Fractional KW motors,
Single-phase synchronous and induction motors, 3 phase Asynchronous motors and
induction motors for traction application.
3.5 Transformers: Construction and testing. Equivalent
circuits. Losses and efficiency. Regulation. Auto-transformer. 3-phase
transformer. Parallel operation. Methods of cooling, Tap changing, parallel
operation, polarity and phase sequence testing, protection Instruments, PTs &
CTs, etc. Scott connection transformer.
4.1 Sources of energy, heat value of fuel, steam power
station, Hydro Electric Station, Nuclear Power Station. Pumped storage plants.
Economics and operating factors.
4.2 Power transmission lines. Modeling and performance
characteristics. Voltage control. Load flow studies. Optimal power system
operation. Load frequency control. Symmetrical short circuit analysis. Z-Bus
formulation. Symmetrical Components. Per unit representation. Fault analysis.
Transient and steady state stability of power systems. Equal area criterion.
Power system transients. Power System Protection Circuit breakers. Relays. HVDC
4.3 Illumination standards of light. Polar curve, Reflection
and absorption, lighting calculations including design & economical layout of
service building, workshops & yards. Various sources of light – fluorescent
4.4 Electric traction : advantages & disadvantages, speed
time curve – traction motor, starting & speed control of DC series motors, power
consumptions, Regenerative breaking, advantages and disadvantages of AC traction
over DC traction, Tractive effort, Braking effort.
4.5 Group & individual drive. Choice of drive & motors for
5.1 Units and Standards. Error analysis. Measurement of
resistance (high & low), Potentiometer, Wheat Stone & Kelvin bridge, meggers for
insulation resistance & earth resistance.
5.2 Voltmeters, ammeter, power factor meter, single phase
watt meter, measurements of three phase power recording instruments, Maximum
Demand Meter. Watt Hour Meter, Shunt, CT, PT.
5.3 Check meter
5.4 Transducers and their applications to the measurement of
non-electrical quantities like temperature, pressure, flow-rate displacement,
acceleration, noise level etc. Data acquisition systems. A/D and D/A converters.