Answer / asif khan

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how to carry out Magnetizing Current Test on Distribution transformer and what purpose we are doing this test. why transformer rating in always in KVA ? what ispositive, negative, zero sequence impedence? How ElCB tripping if Neutral touch with ground Why AC & DC capacitor are use in UPS ? why motor rating in KW? how to syncronize two dg sets

0 Answers  

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what is the meaning of electrical maintenance?

3 Answers   GE Healthcare, MAHINDRA,

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AC is the magnitude of sinosudial-wave but we use cose value to determine power factor instead of sine value.

2 Answers  

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How the Oil Surge Relay works? How it protect the OLTC?

3 Answers   JSL,

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what will happen if ac power supply is given to the rotor of an alternator

1 Answers   Goldman Sachs,

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Is vtg is controlled by the resistor? if else how much?

0 Answers   Sail,

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what happens in a genarator when rotor supplied with ac instead of dc

3 Answers  

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What is difference between earth leakage relay and restricted earth fault relay ?

22 Answers  

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what is meant by phase transformation ratio in induction motors?

2 Answers  

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what are all the preventive maintainance carried out in DG?

1 Answers   TATA,

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how the fan is switched off immediately switching off the switch?

2 Answers  

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we have one pumping station and 4.6 MW 7 no.s synchronous motors.so there is no required HT capacitor to improve power factor.But we have two no.s of 25 Mva power transformer connect to distribute the power for motors connect with 220 kv line.So i have required the HT capacitor to improve power factor at HT side i mean power transformer bus side.So please suggest how much HT capacitor banks required for same.

1 Answers  

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