Answer Posted / svss

Crushed stone is a highly resistive material and this is
used in substations to protect the operating personal from
touch potential and step potential which may be very
dangerous in case of an electrical fault in the substation.
And the other reasons are it will not allow water
stagnation on top layer, and is not slippery.

1)Explain why the cradle guard is used on railway crossing in overhead line construction?

4990

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internally connection of photvoltic module

1873

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On Which Pressure PRV is operated.

1676

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how we select ac fuse rating of an power inverter???

1825

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Whats the minimum value for I.R. that can be allowed for HT & LT alternators for operation?

3980

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How does cost of generation from hydropower plant compare with other sources of electricity?

997

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Dear sir, my knowledge about cable size determination is limited. Though I read examples I could not calculate the Cable size required for electric driven pump 40 KW, 380 Volt, 50 HZ, 50 meter from transformer and it is three phase star delta starting. Please help as there is no one in my surroundings to help.

1702

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what is the difference between ups & inverter

6916

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In the ACB breaker capacity is 2000Amp but this each phase taken 1250 But total beldibg load is 600amp or 700amp watt is the problem

1910

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why do we put a transformer on soak before loading it

1084

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The magnitude of sum of two sinusoidal av voltage is equal to 230 volt.the magnitude of each individual voltage is also equal to 230 volt.what must be the phase difference between voltages?

1569

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Transmission voltage is kept 11KV,33KV,66KV,132KV,220KV due to form factor. What happen to 400KV and 765KV transmission voltage?

2122

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What is the reason that the humming sound is coming from the induction furnace panel?

2548

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Apparent power is expressed as V * I(Conjugate). Why not in V * I ?

3856

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What is the name of the winding to which supply is given?

1118

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