Answer / waseem aslam

Control circuit wiring of substation refers to wiring of protection relays of transformer with the circuit breaker and wiring of over-current/earth-fault protection relay in the CB, including manual tripping operation.

Answer / k.prakashchandra

The control circuit is for opening and closing on command.

what is mcb

7 Answers   L&T,

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what happen if ac supply is fed to rotor of the alternator

2 Answers  

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when we start the tube light, then it takes initially 1100 volt, after glow it takes 120 volt?(when we give 220 volt a.c.)

3 Answers  

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anyone please send transformer parameter design formulas & details of tap changer ? plz i have interview this week its more helpful for me ?

0 Answers  

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What mean power grid fail. why power grid fail.

1 Answers   Intas, Tech Mahindra,

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Why two phase welding machine is used instead of three phase welding machine.

0 Answers   Merck,

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define ac reactor? thier application;

1 Answers  

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what is megar testing

4 Answers   NASA,

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A synchronous machines has higher capacity for (1) Leading power factor (2) Lagging power factor (3) Does not depend upon the power factor of machine (4) None of the above

2 Answers   JSW,

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how do you calculate IKW(consumption per TR) in HVAC?

27 Answers   Aircon, CBRE, Cipla, Clivet, Cushman Wakefield, JLL, Sodexo, Voltas, Wipro,

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we are operationing 3NOs 800 Kva generators by singronyus.specialey evening time our panel trip. the panel showing generator earth fault

4 Answers   RRB,

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What is Hot reserves and spinning reserves?

1 Answers  

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