Answer Posted / vishal

if exitation increase then power factor decrease, and if
exitation decrease then pf increace

Why frame of the motor is specified?. If we mention KW and voltage level,automatically frame is decided or separately frame is compulsory to mention?.

1300

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how to determine the cable size...pls explain me with the formula taking particular load....does the factors like impedance & short circuit rating influence the cable size, if so how....

1583

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If UG power cable both ends are to be earthed or what? If not why?

1504

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Which Class insulation is prefered for the sandwich Busducts ? Why?

1562

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FOR 16/20 MVA 132/33 KV ONAN/ONAF TYPE TRANSFORMER IT IS DESIGNED FOR 16 MVA WITH ONAN CONDITION.IT BECOMES 20 MVA UNDER ONAF CONDITION.LOAD LOSS IS GUARANTEED FOR 65KW AT 20 MVA AND % IMPEDANCE 13.75. PLEASE TELL US AT WHAT LOAD LOSS AND % IMPEDANCE IT SHOULD BE DESIGNED FOR 16 MVA AND WHAT WILL BE ITS EFFICIENCY AT 20 MVA?

2955

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what is the difference between 50 hz freq. and 60 hz freq.? which is better and economic in them ?

1826

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What kind of Neutral CT can be placed in 11/0.433KV transformer to be used and what are its specification?

1410

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How to decide no. of Step and Kvar for APFC Panel 40 kvar MD: 33.12 KVA Avg pf : 0.8540

671

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what is PWM in IGBT and how it works for drive.?

1239

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please describe the Transformer setting, Motor setting, I/C setting, Tie setting

1271

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impliment (AB)`+C to transistor representation

1349

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Can anyone explain me about the RLC based Impulse high voltage generator and how to and operation of Series resonant High voltage reactor...?

1431

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What is the loss of transformer of 220kv/11kv, 63/80 MVA and 18.05% impedance

1556

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if 12v battery get discharged for 2 months after if we put charge it will charge again?how much time it will take to charge?

1529

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can someone explain that how the speed of the protection system affects the fault level calculation?

1478

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