Answer Posted / abhishek

for reliable operation of power system.

I have a relay contact rated at 220v dc which is supplied with a 24vdc from the panel,for it to trip the dampers(24vdc).What if the application of the relay changes so that it should work at its rated 220vdc then will it work at 24vdc supply given or any other consideration needs to be taken .....

2081

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Briefly describe your ideal job?

2967

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IF TVM OF TRANSFORMER SHOWS POWER FACTOR ON 33 KV SIDE AS 0.97 LAGGING AND ON 132 KV SIDE IS 0.75 LEADING.IS THIS CORRECT.WHERE IS PROBLEM.

2365

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If the rated speed of a d.c. Shunt motor is1440 r.p.m, which method of speed control would you suggested to obtain a speed of 1500 r.p.m?

1153

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What is the general power consumption rating of CPU CRT type and Flat type, Monitor,Printer, projector, Scanner?

1899

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What are books to be referred for KPTCL exam?

3683

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we specify current in case of feeder but in case of distributor voltage, why?

1812

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what is the reactance,capacitance & impedence electrical armoured & unarmored Cables.

2201

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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

2013

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Name two types of electrical analogous for mechanical system.

1214

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How to calculate capacitor bank value to maintain unity power factor with some suitable example?

1145

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What is the rotor frequency of 10 Hp 1440 RPM 50HZ 415V ?

1923

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HAI SENT HPCL APTITUDE QUESTION PAPER, MY EMAIL ID IS angus_eee04@rediffmail.com,angus_eee04@yahoo.com

2262

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Why we use auxillary relay ? what is function of differential relay, directional o/c relay?

2199

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HOW CAN WE DECIDE THE SUPPLY VOLTAGE FOR MOTOR ACCORDING TO ITS RATING(IF ANYONE KNOWS GIVE IT WITH EXAMPLE AND ITS CALCULATIONS)

1948

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