Answer Posted / kj

Current flow produces a magnetic field. Voltage will
produce an electrical field

If we impress a dc voltage of 230 V on an unloaded 230 V, 50 Hz transformer it wi A give high secondary voltage B burn out C give secondary voltage as per K D none of these

1956

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Is it possible to protect 3phase overload and earth fault of the 3phase system using two CT's.

2056

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1.how many types of relays? 2.difference between ATS& STS?

2099

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ii) A shunt motor supplied at 230V, runs at 900 rpm when the current is 30A. The resistance of the armature is 0.4 ohms. Calculate the resistance required in series with the armature to reduce the speed to 600 rpm, assuming that the armature current is then 20A. [12]

2285

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What is the alternate solution for testing of polarity by using polarity tester while its milli ammeter does not works?

1932

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is it possible to say motor horsepower number without seeing name plate(when name plate damaged)

2022

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How to distinguish whether MCB is DC or AC looking at it physically

1919

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1.what is the difference between ct and cvt? 2.what is the difference between pt and cvt? 3.what is the difference between relays and circuit breakers?

2699

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define as synchronous generator

2084

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what is relation between ct and pt ratio with multiplication factor of a energy meter? is there any other factor on which multification factor depend?

2271

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i wasted one year for the job after completed my btech what can i say about 1year time in interview

2062

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Why the efficiency of generator is more than motor in swinburne's test

1965

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Why do we need a separate control desk & PLC control panel in Boiler plant or coal handling plant? Can we provide cost effective Control desk cum PLC panel. Is there is an specific need for control desk.. kindly advice.

2307

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will 1050kva DG set withstand for back charge of 16MVA transformer

1799

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list the type of vfd? wich is sutable for heating kiln?

1998

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