can anyone send me some sample question regarding power grid corp

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what is earthed and inearthed cable or system?

1 Answers   CCCL, L&T,

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What is vacuum circuit breaker.define with cause and where be use it device?

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While testing the 33KV Busbar by using Hipot kit, what should be the test voltage we have to apply

2 Answers  

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what is the use of starter in tube light?and what it contains

12 Answers   L&T, RRB,

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how many types of ACB breakers, describe briefly..?

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CT Ratio of a energy meter connection is Red Phase : 100/5A, yello Phase : 50/5A & Blue phase : 100/5 A what is the overall Multiplication factor

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how to test generator protection rotor earth fault relay and locked rotor test?

1 Answers  

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A wattmeter is marked 15 A/30A, 300V/600V and its scale is marked up to 4500 watt. When the meter is connected for 30A, 1600V, the pointer indicates 2000 watts. The actual power in the circuit in

1 Answers   Jindal,

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% voltage variation in distribution a)1% b)5% c)10% d)15%

2 Answers  

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what is the difference between a feeder and a cable?

3 Answers  

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1.what is use of isolation transformer. 2.Differance between KWH,KVAH,KVARH,KVA. 3.Main use of the CT and PT.

1 Answers  

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