Answer Posted / baisakhi ghosh

ground or earth in a miai electrical wiring system is a
cnductor that provides a low impedence to prevent hazardous
voltages from appearig on euipmwnt.norally a grounding
condutor does not carry current.

Neutral is a circuit conductor (that carries current in
normal operation), which is connected to earth (or ground)
generally at the service panel with the main disconnecting
switch or breaker..

What is the difference between the relay and the circuit breaker?

1127

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how to decide the panel size like MDB ,SMDB PANEL SIZES

7390

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how the works electronic energy meter?

2170

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why transformer ratings in kva? & DG ratings in kva? & Motor ratings in kw/HP?

1516

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errection check list for transformer maintenance

2609

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what is the difference between gas group b and gas group c electrical equipment construction wise?

1878

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What is bridge rectifier and explain with details

1920

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How to use computer cpu ups use for home inverter circuit board

1794

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State the factors, for the choice of electrical system for an aero turbine.

1172

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A 230V dc shunt wound motor has an armature resistance of 0,15Ω.When operating on no load at 650 rev/min the armature current is 6A . The motor takes a full load current of 85A. Calculate the full load speed if the field flux is (i) maintained constant (ii)reduced by 0,03

2017

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Why are short circuit ratings always 16kA,25kA,36kA and 50kA.Who has fixed these?

4282

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how generator load test is conducted?what are the steps?

1605

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If the line voltage is reduced to 75% of its rated value then by what percentage current will reduce ?? 75% 25% 50% no change and why ?

2200

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how does it help for selection of a transformer.

1862

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15hp motor wound by 0.9mm & 0.95mm magnet wire. at no load test it draw 4.2A current. Another motor with same condition draw 9.2A current. How can that occur? pls help

1582

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