Electrical questions, Written test technical questions
1. In treated Earth wire, Earth wire is treated with following things? Ans. charcoal & salt 2. In one and a half bus bar system ___ no. of CBs are used in diameter? Ans. 3 3. skewing in IM motor is for? Ans. To reduce noise 4. In a core of Transformer, stamping is provided to reduce? Ans. eddy current losses 5. p.f. variation of alternator is? Ans. lagging to leading 6. In alternator for fix input if field excitation is increased then ? Ans. active power increase 7. Gravel is provided in substation for? Ans. to increase resistance between ground to worker's foot 8. The standard current rating of an electromagnetic relay are? Ans. 1A and 5A 9. A distance relay is said to be inherently directional if its characteristics on R-X diagram? Ans. is a circle that passes through the origin 10. Load flow study is carried for.... Ans. System Planning 11. The effe...