NTPC Electrcical (EXECUTIVE TRAINEES) Syllabus

2010-03-09T01:26:00.000-08:00

Indicative Syllabus

Electrical Engineering

Electric Circuits and Fields: Network graph, KCL, KVL, node and mesh analysis, transient response of dc and ac networks; sinusoidal steady-state analysis, resonance, basic filter concepts; ideal current and voltage sources, Thevenin’s, Norton’s and Superposition and Maximum Power Transfer theorems, two-port networks, three phase circuits; Gauss Theorem, electric field and potential due to point, line, plane and spherical charge distributions; Ampere’s and Biot-Savart’s laws; inductance; dielectrics; capacitance.
Signals and Systems: Representation of continuous and discrete-time signals; shifting and scaling operations; linear, time-invariant and causal systems; Fourier series representation of continuous periodic signals; sampling theorem; Fourier, Laplace and Z transforms.
Electrical Machines: Single phase transformer - equivalent circuit, phasor diagram, tests, regulation and efficiency; three phase transformers - connections, parallel operation; auto-transformer; energy conversion principles; DC machines - types, windings, generator characteristics, armature reaction and commutation, starting and speed control of motors; three phase induction motors - principles, types, performance characteristics, starting and speed control; single phase induction motors; synchronous machines - performance, regulation and parallel operation of generators, motor starting, characteristics and applications; servo and stepper motors.
Power Systems: Basic power generation concepts; transmission line models and performance; cable performance, insulation; corona and radio interference; distribution systems; per-unit quantities; bus impedance and admittance matrices; load flow; voltage control; power factor correction; economic operation; symmetrical components; fault analysis; principles of over-current, differential and distance protection; solid state relays and digital protection; circuit breakers; system stability concepts, swing curves and equal area criterion; HVDC transmission and FACTS concepts. Numeric Relays.
Control Systems: Principles of feedback; transfer function; block diagrams; steady-state errors; Routh and Niquist techniques; Bode plots; root loci; lag, lead and lead-lag compensation; state space model; state transition matrix, controllability and observability.
Electrical and Electronic Measurements: Bridges and potentiometers; PMMC, moving iron, dynamometer and induction type instruments; measurement of voltage, current, power, energy and power factor; instrument transformers; digital voltmeters and multimeters; phase, time and frequency measurement; Q-meters; oscilloscopes; error analysis.
Analog and Digital Electronics: Characteristics of diodes, BJT, FET; amplifiers - biasing, equivalent circuit and frequency response; oscillators and feedback amplifiers; operational amplifiers - characteristics and applications; simple active filters; VCOs and timers; combinational and sequential logic circuits; multiplexer; Schmitt trigger; multi-vibrators; sample and hold circuits; A/D and D/A converters; 8-bit / 16-bit microprocessor basics, architecture, programming and interfacing.
Power Electronics and Drives: Semiconductor power diodes, transistors, thyristors, triacs, GTOs, MOSFETs and IGBTs - static characteristics and principles of operation; triggering circuits; phase control rectifiers; bridge converters - fully controlled and half controlled; principles of choppers and inverters; basis concepts of adjustable speed dc and ac drives. Variable speed control of AC machine

Part-II: Executive Aptitude Test

Executive Aptitude Test is common to all disciplines. This part will be consists of 35 objective type questions on:

Vocabulary
Verbal comprehension
Quantitative aptitude
Reasoning ability to determine data sufficiency
Interpretation of graphs/ charts/ tables
Numerical ability etc.

Best free ebooks sites:

2010-03-07T22:22:00.000-08:00

These are few best sites/blogs i found on net to download electrical engineering ebooks.

1.ali-almukhtar.blogspot.com

2.electricalengineeringtour.blogspot.com

3.www.ebooksbay.org

4. getfreeebooks.com

5.artikel-software.com

6. free.electricalbooks.co.cc

NOTE:please download the books after reading any terms or conditions mentioned in their site

Q's for B-tech Elec. students (part 1)

2010-03-07T08:56:00.000-08:00

Q.1. What is the difference between emf generated in a Rotating machine and transformer?

Q.2.Why mostly for armature ,distributed winding is used?

Q.3.Does even harmonic emfs exist in generated emf in rotating machines?

Q.4.Why an induction motor is called so ?
or
Why an induction motor is also called rotating transformer?

Q.5.Why are induction generators not widely used?

Q.6.By short-pitching and distributing coils in armature winding ,does Eg( generated emf increase or decrease)?

Q.7.Does an Induction motor have field winding,support your answer?

Q8..By removing commutator from dc machine does it become ac machine?

Q.9.Commutator acts as rectifier or inverter,support your answer?

Q.10.What is the basic difference between DC generator and AC generator?

Q.11.Why is an induction motor called asynchronous motor?

Q.12.When are cylindrical rotors( and salient) preferred?

Q.13.Why are hv and lv windings interleaved in a Transformer?

Q.14.What happens to a Transformer when given DC i/p?

Q.15.What is the value of most preferred chording angle for windings,why?

(can you please try and answer these questions,i will soon come out with the best suitable answers)

Lets learn together.

BTechGUIDE

NTPC Electrcical (EXECUTIVE TRAINEES) Syllabus

Part-II: Executive Aptitude Test

Best free ebooks sites:

Q's for B-tech Elec. students (part 1)