How can transformer winding insulation be measured (Delta & Star Connections)?

3 Answers  

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Why Alternator has 0.8 power factor?

2 Answers   Bhel,

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Why insulation level follows this order? transformer < bus bar < circuit breaker & Isolator < transmission line.

0 Answers  

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what is the main function of contactor?????

9 Answers  

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What is the operational principle of direct current current transformer and direct current potential transformer?if possible plz reply with ckt. diagram.

1 Answers  

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When are the directional relays used?

0 Answers  

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why rating of transformer is in kva instead of kw?

3 Answers  

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line and phase voltage relationship?

2 Answers   CPCL, IVRCL,

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USE OF 8 WAY PAN ASSEMBLY

0 Answers   TCS,

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An 8 pole, 50 Hz, 3-phase IM is loaded to a poing where pull out torque will occur. The rotor resistance per phase is 0.3 ohm and motor stalls at 650 rpm. The rotor frequency at maximum torque point is A 3.33% B 4.44% C 5.55% D 6.66%

1 Answers  

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what are frequency changers ? Tell me about commertially availble frequency changers ?

1 Answers   GE,

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how to calculation increase power factor for single phase

0 Answers  

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