Pleae send me last 5 years of Question book about RRB chennai.

0 Answers   RRB,

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Is reverse power relay of generator operate due to voltage variation problem? please clearify.

1 Answers   Birla,

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Can i use to 3 phase 4 wire energy meter inplace of 3 phase 3 wire energy meter ?

4 Answers  

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MY QUATION IS ABT THE MAIN POWER TRANSFORMER IN STEEL PLANT , I WISH TO KNOW THAT WHY TRANSFORMER PROTECTION NOT TRIP AS CABLES ON THE SECONDAY SIDE IS WATER COOLED. TRANFORMER DETAIL NORMAL KVA--150 KVA PRIMARY VOLTAGE --34.5 KV SEC.NO-LOAD VOLTAGE---1.290-908-690V ( WITH PRIMARY DELTA CONNECTED) CONNECTION--D/d (EXTERNAL CLOSED) CONSTANT RATEING FROM--1.290-908V CONSTANT CURRENT FROM--908-690 VECTOR GROUP--D III

1 Answers  

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can transformer work on dc or not?if we increase the inductance of transformer can it happen to work on dc?

1 Answers  

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What are the minimum acceptable insulation resistances of insulation of underground cable suitable for 0.440kV,11kV, 33kV and 66kV?

2 Answers  

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Why 15Amp. MCB is suitable to carry load of 1.5Ton Ac please Explain?

0 Answers  

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What is the voltage b/w nutral and earth

11 Answers   Mind Space,

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Is it necessary to carry out sheath test after cable jointing? If the value is zero of such instance , is it ok to energize the cable?

1 Answers  

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What is meant by RVT and NDR ? expansion and details of it

0 Answers  

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What is the difference between sensitive earth fault and restricted earth fault in power transformers?

4 Answers  

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am commissioning the trafo without connecting the neutral therefore unbalance will occur what is the alternative solution for this?

0 Answers   L&T,

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