Electrical Engineering

Infrastructure & Laboratory facilities

Basic Electrical Engineering Laboratory
  • Introduction and uses of following instruments (a) Voltmeter (b) Ammeter (c) Multimeter (d) Oscilloscope
  • Demonstration of real life resistors, capacitors with color code , inductors and autotransformer.
  • Demonstration of cut-out sections of machines: DC machine, Induction machine, Synchronous machine and single phase induction machine.
  • Calibration of ammeter and Wattmeter.
  • Determination of steady state and transient response of R-L, R-C and R-L-C circuit to a step change in voltage.
  • Determination of steady state response of R-L and R-C and R-L-C circuit and calculation of impedance and power factor.
  • Determination of resonance frequency and quality factor of series and parallel R-L-C circuit.
  • (a) Open circuit and short circuit test of a single-phase transformer

    (b) Load test of the transformer and determination of efficiency and regulation

  • Demonstration of three phase transformer connections. Voltage and current relationship, phase shifts between the primary and secondary side.
  • Measurement of power in a three phase unbalanced circuit by two wattmeter method.
  • Determination of Torque –Speed characteristics of separately excited DC motor.
  • Determination of Torque speed characteristics and observation of direction reversal by change of phase sequence of connection of Induction motor.
  • Determination of operating characteristics of Synchronous generator.
  • Demonstration of operation of

    (a) DC-DC converter

    (b) DC-AC converter

    (c) DC-AC converter for speed control of an Induction motor 15.Demonstration of components of LT switchgear.

Electric Circuit Theory Laboratory
  1. Transient response of R-L and R-C network: simulation with PSPICE /Hardware
  2. Transient response of R-L-C series and parallel circuit: Simulation with PSPICE/ Hardware
  3. Determination of Impedance (Z) and Admittance (Y) parameter of two port network: Simulation / Hardware.
  4. Frequency response of LP and HP filters: Simulation / Hardware.
  5. Frequency response of BP and BR filters: Simulation /Hardware.
  6. Generation of Periodic, Exponential, Sinusoidal, Damped Sinusoidal, Step, Impulse, Ramp signal using MATLAB in both discrete and analog form.
  7. Determination of Laplace transform and Inverse Laplace transform using MATLAB.
  8. Amplitude and Phase spectrum analysis of different signals using MATLAB.
  9. Verification of Network theorem using SPICE
Electric Machine Laboratory
  1. Study of the characteristics of a separately excited DC generator
  2. Study of the characteristics of a DC motor
  3. Study of methods of speed control of DC motor
  4. Study of the characteristics of a compound DC generator (short shunt).
  5. Measurement of speed of DC series motor as a function of load torque.
  6. Study of equivalent circuit of a single phase transformer
  7. Polarity test on a single phase transformer & study of different connections of three phase transformer
  8. Study of equivalent circuit of three phase Induction motor by no load and blocked rotor test
  9. Study of performance of wound rotor Induction motor under load.
  10. Study of performance of three phase squirrel- cage Induction motor –determination of iron-loss, friction &windage loss.
  11. Different methods of starting of a 3 phase Cage Induction Motor & their comparison [DOL, Auto transformer & Star-Delta]
  12. Speed control of 3 phase squirrel cage induction motor by different methods & their comparison [voltagecontrol & frequency control].
  13. Speed control of3 phase slip ring Induction motor by rotor resistance control.
  14. Determination of regulation of Synchronous machine by

    (a) Potier reactance method.

    (b) Synchronous Impedance method.

  15. Determination of equivalent circuit parameters of a single phase Induction motor.
  16. Load test on single phase Induction motor to obtain the performance characteristics.
  17. To determine the direct axis resistance & quadrature reactance of a 3 phase synchronous machine by slip test.
  18. Load test on wound rotor Induction motor to obtain the performance characteristics.
  19. To make connection diagram to full pitch & fractional slot winding of 18 slot squirrel cage Induction motor for 6 poles & 4 pole operation.
  20. To study the performance of Induction generator.
  21. Parallel operation of 3 phase Synchronous generators.
  22. V-curve of Synchronous motor
Electrical and Electronic Measurement Laboratory
  1. Instrument workshop- Observe the construction of PMMC, Dynamometer, Electrothermal and Rectifier type of instruments, Oscilloscope and Digital multimeter.
  2. Calibrate moving iron and electrodynamometer type ammeter/voltmeter by potentiometer.
  3. Calibrate dynamometer type wattmeter by potentiometer.
  4. Calibrate AC energy meter.
  5. Measurement of resistance using Kelvin double bridge. 6. Measurement of power using Instrument transformer.
  6. Measurement of power in Polyphase circuits.
  7. Measurement of frequency by Wien Bridge.
  8. Measurement of Inductance by Anderson bridge
  9. Measurement of capacitance by De Sauty Bridge.
  10. Measurement of capacitance by Schering Bridge.
Power System Laboratory
  1. Determination of the generalized constants A.B, C, D of long transmission line.
  2. Simulation of DC distribution by network analyzer.
  3. Measurement of earth resistance by earth tester.
  4. Dielectric strength test of insulating oil.
  5. Determination of breakdown strength of solid insulating material.
  6. Different parameter calculation by power circle diagram
  7. Study of different types of insulator.
  8. Active and reactive power control of alternator.
  9. Study and analysis of an electrical transmission line circuit with the help of PSPICE.
  10. Dielectric constant, tan delta, resistivity test of transformer oil.
  11. Study of the characteristics of on delay relay and off delay relay. 12. Test to find out polarity, ratio and magnetization characteristics of CT and PT.
  12. Test to find out characteristics of
    • under voltage relay
    • earth fault relay.
  13. Study on DC load flow
  14. Study on AC load flow using Gauss-seidel method
  15. Study on AC load flow using Newton Raphson method.
  16. Study on Economic load dispatch.
  17. Study of different transformer protection schemes by simulation.
  18. Study of different generator protection schemes by simulation.
  19. Study of different motor protection schemes by simulation.
  20. Study of different characteristics of over current relay.
  21. Study of different protection scheme for feeder.
Control System Laboratory
  1. Familiarization with MATLAB control system tool box, MATLAB- Simulink tool box & PSPICE
  2. Determination of Step response for first order & Second order system with unity feedback on CRO & calculation of control system specification like Time constant, % peak overshoot, settling time etc. from the response.
  3. Simulation of Step response & Impulse response for type-0, type-1 & Type-2 system with unity feedback usingMATLAB & PSPICE.
  4. Determination of Root locus, Bode plot, Nyquist plot using MATLAB control system tool box for 2nd order system & determination of different control system specification from the plot.
  5. Determination of PI, PD and PID controller action of first order simulated process.
  6. Determination of approximate transfer functions experimentally from Bode plot.
  7. Evaluation of steady state error, setting time , percentage peak overshoot, gain margin, phase margin with addition of Lead
  8. Study of a practical position control system obtaining closed step responses for gain setting corresponding to over-damped and under-damped responses. Determination of rise time and peak time using individualized components by simulation. Determination of un-damped natural frequency and damping ration from experimental data.
  9. Tuning of P, PI and PID controller for first order plant with dead time using Z-N method. Process parameters (time constant and delay/lag) will be provided. The gain of the controller to be computed by using Z-N method. Steady state and transient performance of the closed loop plant to be noted with and without steady disturbances. The theoretical phase margin and gain margin to be calculated manually for each gain setting.
  10. Design of Lead, Lag and Lead-Lag compensation circuit for the given plant transfer function. Analyze step response of the system by simulation.
  11. Obtain Transfer Function of a given system from State Variable model and vice versa. State variable analysis of a physical system - obtain step response for the system by simulation.
  12. State variable analysis using simulation tools. To obtain step response and initial condition response for a single input, two-output system in SV form by simulation.
  13. Performance analysis of a discrete time system using simulation tools. Study of closed response of a continuous system with a digital controller and sample and hold circuit by simulation.
  14. Study of the effects of nonlinearity in a feedback controlled system using time response. Determination of step response with a limiter nonlinearity introduced into the forward path of 2nd order unity feedback control systems. The open loop plant will have one pole at the origin and other pole will be in LHP or RHP. To verify that with open loop stable pole, the response is slowed down for larger amplitude input for unstable plant, the closed loop system may become oscillatory with large input amplitude by simulation
  15. Study of effect of nonlinearity in a feedback controlled system using phase plane plots. Determination of phase plane trajectory and possibility of limit cycle of common nonlinearities.
Microprocessor and Microcontroller Laboratory
  1. Familiarization with 8085 register level architecture and trainer kit components including the memory map. Familiarization with process of storing and viewing the contents of memory as well as registers.
    • Study of prewritten program on trainer kit using the basic instruction set ( datatransfer, load/store, arithmetic, logical)
    • Assignment based on that.
    • Familiarization with 8085 simulator on PC
    • Study of prewritten program using basic instruction set (data transfer, load/store, arithmetic, logical).
    • Assignment based on that.
  2. Programming using kit/simulator.
    • Lookup table
    • Copying a block of memory
    • Shifting a block of memory.
    • Packing and unpacking of BCD numbers.
    • Addition of BCD number
    • Binary to ASCII conversion
    • String matching
  3. Program using subroutine calls and using IN/OUT instruction using 8255 PPI on thetrainer kit e.g. subroutine for delay, reading switch state and glowing LEDs accordingly,finding out frequency of pulse train etc.
  4. Interfacing any 8 bit latch (74LS373) with trainer kit as a peripheral mapped output portwith absolute address decoding.
  5. Interfacing with I/O module :
    • ADC
    • Speed control of DC motor with DAC
    • Keyboard
    • Multi digit display with multiplexing.
    • Stepper motor
  6. Study of 8031/8051 Micro controller kit and writing program for the following task using the kit
    • table look up
    • basic arithmetic and logical operation
    • interfacing of keyboard and stepper motor.
Power Electronics Laboratory
  1. Study of the characteristics of an SCR.
  2. Study of the characteristics of a Triac
  3. Study of different triggering circuits of an SCR
  4. Study of firing circuits suitable for triggering SCR in a single phase full controlled bridge.
  5. Study of the operation of a single phase full controlled bridge converter with R and R-L load.
  6. Study of performance of single phase half controlled symmetrical and asymmetrical bridge converters.
  7. Study of performance of step down chopper with R and R-L load.
  8. Study of performance of single phase controlled converter with and without source inductance (simulation) 9. Study of performance of step up and step down chopper with MOSFET, IGBT and GTO as switch (simulation).
  9. Study of performance of single phase half controlled symmetrical and asymmetrical bridge converter.(simulation)
  10. Study of performance of three phase controlled converter with R & R-L load. (simulation)
  11. Study of performance of PWM bridge inverter using MOSFET as switch with R and R-L load.
  12. Study of performance of three phase AC controller with R and R-L load (simulation)
  13. Study of performance of a Dual converter. (simulation)
  14. Study of performance of aCycloconverter (simulation)
Electrical Systems Laboratory
  • Designing a heating element with specified wattage, voltage and ambient temperature.
  • Designing an aircore grounding reactor with specified operating voltage, nominal current and fault current.
  • Designing the power distribution system for a small township.
  • Designing a double circuit transmission line for a given voltage level and power (MVA)transfer.
  • Wiring and installation design of a multistoried residential building (G+4,not less than 16dwelling flats with a lift and common pump)
  • Designing of a substation
  • Designing an ONAN distribution transformer.
  • Designing a three phase wound rotor induction motor.
  • Designing a split phase squirrel cage induction motor for a ceiling fan or a domestic pump.
  • Designing a permanent magnet fractional hp servo motor
  • Design the control circuit of a Lift mechanism
  • Design a controller for speed control of DC machine.
  • Design a controller for speed control of AC machine.