Answer / k.prakashchandra

Nothing . Reversal of field polarity is recommended to reduce residual magnetism

what is phase angle ? and also tells me why my phase-phase voltages are 390 rather then my single phase voltages are 221 and 223 respectivly?

2 Answers  

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which types of tests are required after commissioning of 6.6 kva tranformer?

3 Answers   Reliance,

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how external lighting design? please give examples?

0 Answers  

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what is the different beetween kva and kwh?

4 Answers  

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how to identyfy cable sizes?

4 Answers   IAF, Mylan,

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Why the transmission lines are in 11kV, 22kV, 33kv, and why not 10kV,20kV, 30kV?

2 Answers   Bhel,

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Is it reuired to use house service barcket for 31/2 core 300 Sq.mm cable,if the distance between pole & shop is around 2 mtrs only or can I hang the cable with GI support in air? upto what size of cable GI serrvice btacket is necessary?

1 Answers   HAL,

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Dear sir, please tell me how many day use CTPT transformer

1 Answers   Daya Engineering Works,

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explain me the exact concept of generator neutral....????

2 Answers  

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Can Induction motor run at over rated speed? ( 15oo rpm is rated speed for 50HZ. is it possible to ride 3000 RPM with same motor with the help of VVVFD for continues ride of 100HZ)

3 Answers   Equate,

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How can I indicate rpm on digital rpm meter with help of simple tacho output? tacho output is 90v at 3000rpm.

2 Answers   Godrej,

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How would we calculate the no of earthing pits required for motor /panel

5 Answers   APGenco, National Engineering Industries, Practical Viva Questions,

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