Laboratories

Faculty in Charge: Dr. Linss T Alex

Lab staff in Charge: Mr. Madhu M M

The Electrical Measurements lab works under the Department of Electrical and Electronics Engineering. The lab is equipped with latest technologies in electrical energy measurement and instrumentation such as Kelvin Bridges, Wheatstone’s bridges, energy meters, digital multi meters, flux meter etc. It ensures that the students become experts in practical knowledge related to electrical measurement process under the guidance of faculty members from the Department of Electrical & Electronics Engineering. The lab facilities are used for final year B.Tech projects as well as studies beyond the syllabus.

List of Experiments:

1. Verification of Superposition Theorem in dc circuits.
2. Verification of Thevenin’s Theorem in dc circuits.
3. Determination of impedance, admittance, power factor and real/reactive/ apparent power drawn in RLC series/parallel circuits.
4. 3-phase power measurement using one wattmeter and two-wattmeter method.
5. Determination of B-H curve, μ-H curve and μ-B curve of an iron ring specimen.
6. Measurement of voltmeter and ammeter resistances using Wheatstone’s bridge and Kelvin’s double bridge and extension of range of voltmeters and ammeters
7. Measurement of self/ mutual inductance and coupling co-efficient of iron cored coil and air-cored coil.
8. Calibration of meters and measurement of unknown resistance using slide- wire potentiometer.
9. Calibration of single phase energy meter by direct and phantom loading at various power factors.
10. Calibration of 3-phase energy meter using standard wattmeter.
11. Calibration of wattmeter using Vernier dial potentiometer
12. Measurement of capacitance using Schering Bridge.
13. Extension of instrument range by using Instrument transformers(CT and PT)
14. Characteristics of Thermistor, RTD, and Thermocouple
15. Characteristics of LVDT.
16. Characteristics of strain gauge/ Load cell.
17. Measurement of energy using electronic Energy meter/TOD meter
18. Current measurement using Clamp on meter

Faculty in Charge: Ms. Anitha Shaju

Lab staff in Charge: Ms Anuja Janson

The Power Electronics lab under the Department of Electrical & Electronics Engineering enhances the students by providing them a platform for the better understanding of the concepts and working of advanced power semiconductor devices and power electronics circuits. This lab is set up to kindle the passion among the students to develop their own prototypes. The lab facilitates students who are doing their final theses in power converters in particular and electrical energy conversion in general. The power electronics lab is well equipped with advanced power electronics equipments like power electronics training kits, chopper & inverter control units, thyristors controllers, Drive Control using DSP controllers, dc machine drives, function generators, signal generators, oscilloscopes, power scopes etc

List of Experiments:

Hardware Experiments:

1. Static characteristics of SCR
2. R and RC firing circuits
3. UJT Trigger circuit with Single phase controlled Rectifier
4. Line Synchronised Triggering Circuits
5. Static characteristics of MOSFET
6. AC Voltage Controller using TRIAC
7. Single Phase fully Controlled SCR Bridge circuit
8. Single-phase half bridge/full bridge inverter using power MOSFET/IGBT
9. Single-phase sine PWM inverter with LC filter
10. Chopper controlled DC motor
11. Speed control of 3-phase induction motor
12. IGBT based three phase PWM Inverter
13. Closed Loop Control of Single Phase Fully Controlled Rectifier.

Electrical Machines Lab

Faculty in Charge: Mr. Thomas Felix

Lab staff in Charge: Ms. Siji Varghese

The objective of the laboratory is to provide the students a chance to put theory into practice. It also encourages the students to troubleshoot the system in organized and established manner Besides, the lab instills in the students the awareness and practice of safety. The Electrical Machines lab under the department is equipped with electrical machines like dc motors, ac motors, dc generators, transformers and alternators. The lab facilitates the students to study the characteristics / behavior of these electrical machines and helps them to have a better understanding of what they have studies in their text books. This lab has an area of 420sqm. Some of the electrical loads used for doing the experiments are built by our technical staff.

List of Experiments:

Part A – DC Machines

1. Open circuit characteristics of DC shunt generator
2. Load test on DC shunt generator
3. Load test on DC compound generator
4. Brake test on DC shunt motor
5. Brake test on DC series motor
6. Swinburne’s test on a DC shunt machine
7. Hopkinson’s test on a pair of DC machines
8. Retardation test on a DC machine
9. Separation of losses in a DC shunt motor

Part B- Transformers

10. O.C. & S.C. tests on the single phase transformer
11. Load test on the single phase transformer
12. Separation of losses in a single phase transformer
13. Sumpner’s test
14. Scott connection of single phase transformers
15. Parallel operation of single phase transformers
16. Three phase connection of single phase transformers
17. O.C. & S.C. tests on the Three phase transformer
18. Load Test on V connected Transformers
19. Regulation of alternator by direct loading
20. Regulation of three phase alternator by emf and mmf methods
21. Regulation of alternator by Potier and ASA methods
22. Regulation of alternator by Potier method using inductive load
23. Regulation of salient pole alternator using two reaction theory
24. Active and reactive power control in grid connected alternators
25. Study of induction motor starters
26. Variation of starting torque with rotor resistance in slip-ring induction motors
27. Speed control of slip ring induction motor by varying rotor resistance
28. Load test on three phase squirrel cage induction motor
29. Load test on three slip ring induction motor
30. No load and block rotor test on three phase induction motor
31. Performance characteristics of pole changing induction motor
32. V curve of a synchronous motor
33. Performance characteristics of induction generator
34. Equivalent circuit of single phase induction motor

Faculty in Charge: Ms. Annie Bincy

Lab staff in Charge: Ms Anuja Janson

The workshop is used for course introduction to electrical engineering. Here the students are given hands on training in electrical wirings. They are given a basic idea about the operation and power consumption of certain electrical appliances such are mixies, iron box, pumps, fan etc. Students are familiarized with supply arrangements and their limitations, knowledge of standard voltages and their tolerances, safety aspects of electrical systems and importance of protective measures in wiring systems, knowledge about the types of wires, cables and other accessories used in wiring. Students are able to wire simple lighting circuits for domestic buildings and distinguish between light and power circuits and to measure electrical circuit parameters and current, voltage and power in a circuit

List of Experiments :

1. Identify different types of cables/wires and switches and their uses
2. Identify different types of fuses and fuse carriers, MCB and ELCB, MCCB with ratings and usage
3. Wiring of simple light circuit for controlling light/fan point (PVC conduit wiring)
4. Wiring of light/fan circuit using two way switches(Staircase wiring)
5. Wiring of fluorescent lamps and light sockets(6 A)
6. Wiring of Power circuit for controlling power device (16 A socket)
7. Godown wiring / Tunnel wiring
8. Wiring of power distribution arrangement using single phase MCB distribution board with ELCB, Main switch and Energy meter.
9. Measurement of voltage, current and power in single phase circuit using voltmeter, ammeter and wattmeter. Calculate the power factor of the circuit.
10. Wiring of backup power supply including inverter, battery and load for domestic installation
11. Demonstration and measurement of power consumption of electric iron, mixer grinder, single phase pump, exhaust fan etc