Answer Posted / shaheed

Relay is an Electromagnetic Switch.It can either make a
circuit or break the circuit with a preset value given by
the manufacturer or according to the functional operation.

But where as Contactor is a device which normally preferred
in Motor Protection circuit.It can either make or Break the
circuit with the rated Power.but not in line with the
Abnormality or any set value

what is the requirement regarding earthing of Single conductor with AWA

2253

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Hello sir, pls send me hpcl technical test papers .i am. Appearing for the exam.

2718

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How can ou verify the size of conductor 50Sq.mm ACSR

1957

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How a capacitor discharge weld power supply works? what is the use of a pulse transformer?

2084

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if flux and load static in dc motor and supply voltage increases 20% then what happened in speed

1906

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Greeting to all members, How to calculate spill current when we have different ratio CT and Class for REF(Low Imp) I have 500/1A 5P20 @line side n 400/1A CL.X @ Neutral.

3008

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How to operate a ac chilar plant?

2488

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What is the difference between PS & metering CT (5p20,0.5 etc.)? Why in PS class CT only Vk is given ? Is PS class CT is more accurate than metering CT?

1126

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How much of the total hydro power potential has been exploited so far in india?

1127

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A 400KVA transformer has 400 Hz frequency. If the frequency is changed to 50 Hz, then what will be the new KVA rating?

1796

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what is effect of length of air gap on performance of dc motor and generator?

1892

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A logic circuit that provides a HIGH output if one input or the other input, but not both, is HIGH, is a(n)?

1243

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What is the difference between electronic regulator and ordinary electrical rheostat regulator for fans?

1105

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If Dg set load increase 25%, How much increase fuel Consumption (15 kva 2 cylinder DG set)

2273

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why generator efficiency is more in swinburnes test?

2208

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