Electrical Engineering Lab

List of Experiments / Activities

1. Exp. Theory
2. List of Experiments
3. 1Unit V — Electrical Safety Practices in the Laboratory — Demonstrate safe handling of electrical equipment, proper use of insulated tools, earthing, and emergency shutdown procedures. Application: Safe operation of electrical systems in laboratories and workplace
4. 2Unit I — Verification of Kirchhoff's Voltage Law (KVL) and Kirchhoff's Current Law (KCL) — Verify Kirchhoff's Voltage Law in a series circuit and Kirchhoff's Current Law in a parallel circuit.
5. 3Unit I — Thevenin's Theorem Verification — Find the open-circuit voltage (Vth) and equivalent resistance (Rth) of a DC network; connect different loads and verify that measured terminal voltages match Thevenin's prediction.
6. 4Unit II — AC Measurements – Voltage, Current, and Frequency — Use a voltmeter and ammeter to measure single-phase AC supply voltage and load current; verify using voltmeter, ammeter and wattmeter; observe waveform and measure frequency using a basic CRO.
7. 5Unit II — Determination of the parameters of ac single phase series RLC circuit. — Measure the source voltage (V), circuit current (I), active power (P), and voltages across each component. Use these values to calculate impedance, individual reactances, and phase angles
8. 6Unit II — Resonance in an RLC series circuit — Study the phenomenon of resonance in an RLC series circuit and obtain the resonant frequency.
9. 7Unit II — Power and Power Factor Measurement and Power Factor Improvement Using Capacitor — Connect a single-phase inductive load (choke coil); measure voltage, current, and active power using a wattmeter; compute power factor. Add capacitors in parallel steps across the inductive load; measure and record power factor at each step; observe reduction in line current.
10. 8Unit III — Three-Phase Star Connection – Voltage and Current Verification — Set up a balanced three-phase star-connected resistive load; measure phase and line voltages and currents; verify that VL = √3 × Vph and IL = Iph.
11. 9Unit III — Three-Phase Power Measurement – Two- — Measure total active power and power factor of a three-phase balanced load using two single-phase wattmeters. Wattmeter Method
12. 10Unit IV — Single-Phase Transformer – Turns Ratio and Load Test — Measure primary and secondary voltages to verify turns ratio; perform a load test at multiple loads; compute efficiency
13. 11Unit V — DC Motor – Speed Variation and Direction Reversal — Connect a DC shunt motor; observe speed change with armature voltage variation using a variable DC supply; reverse terminals to reverse direction.
14. 12Unit V — Three phase induction Motor – Direction Reversal — Connect a three phase induction motor; interchange supply terminals to reverse direction.
15. 13Unit V — Solar PV Module – Open Circuit Voltage, Short Circuit Current, and I-V Curve — Measure Voc and Isc of a solar PV module; connect a rheostat load and plot the I-V and P-V curves;