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Jan- May’2012
Compiled by:
Sr. Lect. Prachi Dewan
ECE Department
GTBIT.
LIST OF EXPERIMENTS
(Electrical Science Lab-I)
Branch:- EEE /ECE
1. Introduction to various Basic Instruments of Electrical Science 2. To verify Superposition Theorem. 3. To verify Thevenin Theorem and find out Thevenin’s Equivalent circuit using DC Sources. 4. To verify Maximum Transfer Theorm for D.C source. 5. To study R-L-C series circuit and draw its phasor diagram. 6. Measurement of energy and calibration of single phase Energy meter with Wattmeter. 7. To perform open circuit test and short circuit test on single phase transformer. 8. Load test on a single phase transformer regulation and efficiency.
EXPERIMENT 1
AIM: Introduction to various Basic Instruments of Electrical Science
OBJECTIVE: Introduction to various Supply Systems, Ammeter, Voltmeter, Wattmeter, Energy meter, Tachometer, Rheostat, Loading Devices, Transformer.
Apparatus Required: Demonstration of various instruments like Ammeter, Voltmeter, Wattmeter, Energy meter, Tachometer, Rheostat, Various Capacitors, Various Resistors, AC and DC Power Supply.
Theory of Experiment: a) AMMETER
Ammeters are employed for measuring current in a circuit and connected in series with the circuit. As ammeter is connected in series, the voltage drop across ammeter terminals should be as low as possible. This requires that the resistance of the ammeter should be as low as possible. The current coil of Ammeter has low current carrying capacity whereas the current to be measured may be quite high. For this reason a low resistance is connected in parallel to the current coil. b) VOLTMETER
Voltmeters are employed to measure the potential difference across any two points of the circuit these are connected in