Answer Posted / reshma agrawalla

Multiplying factor=connected CT ratio/meter CT ratio*connected PT ratio/meter pt ratio*scale factor
Scale factor=1(for kwh meter)
Scale factor=1000(for mwh meter)

Define newton's law of viscosity.

1214

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im electrical engineer, could any one help me for FEWA exam questions please ?

1112

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0.5,1,1.5,2.5,4.0.6.0,10,16 square mm electrical wires how much take maximum current in 50htz

2141

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How to calculate approximate load loss of a distribution transformer by knowing %ge imp of transformer?

2215

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In what condition the HT fuse breakes?

2023

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explain the process of commutation in a dc machine. Explain what are inter-poles and why they are required in a dc machine.

1181

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how to calculate the loss tangent of electrical cables

2078

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What is the meaning of HT Trivector Meter ?

2466

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what is the difference between switch yard to residential area.and how much required it.

1772

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what is induction furnance? how many phase supply given io its coil for 15 or 20 ton furnance?

3416

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What is the need of earthing transformer for delta side of a transformer. (Think of a line section between a star/delta transformer at a grid substation and delta/star transformer at a village. An earthing transformer is there at the delta side of the star/delta transformer at grid substation). As there are no ground reference there will not be fault current if a one phase is grounded. Further L-L phase will be sensed by the primary side of star/delta transformer as a L-G fault. So why an earthing transformer is required at delta side

1455

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what is the difference between active power and reactive power and apparant power in practical as well as theoritical

1935

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comparision between ACB and VCB

2367

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what is breathing?

1817

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why we change the direction of winding in rotor ?how we make the north and south pole?

2056

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