Electrical Engineering Interview Questions
Questions Answers Views Company eMail

What is the difference between ELCB and RCCB. Please define the working of both.

6 10706

to hook up ten 50 amp rv pedastels at a lenth of 600 feet from the service what size will my service need to be and the size of wire will I have to run to each pedastel in series??????

668

CAN WE CALCULATE THE NEGATIVE SEQUENCE AND ZERO SEQUENCE REACTANCE OF A GENERATOR USING ONLY ITS RATED VOLTAGE, KW, PF AND SYNCHRONOUS REACTANCE??? IF YES, THEN HOW??

4149




why we used to transmitt the power at higher voltage why not at lower voltage

8 3971

why after termination of HT cable armoured earth connected one end, why not connect other end.pls tell me correct answer.

3 7568

what is armature reaction?explain in simple words?and what is its infleunce on dc motor

16 27333

what is the difference between torque induced and torque load?compare them with respect to dc motor?

657

what is the difference between ac and dc?which one is more efficient?and what r their advantages

1 2198




what is neutral plane shift?

1 3897

In Power transformer oil temperature or winding temperature will be high

3 9033

what is differnt between metering CTs an protection CTs

10 7459

MY QUATION IS ABT THE MAIN POWER TRANSFORMER IN STEEL PLANT , I WISH TO KNOW THAT WHY TRANSFORMER PROTECTION NOT TRIP AS CABLES ON THE SECONDAY SIDE IS WATER COOLED. TRANFORMER DETAIL NORMAL KVA--150 KVA PRIMARY VOLTAGE --34.5 KV SEC.NO-LOAD VOLTAGE---1.290-908-690V ( WITH PRIMARY DELTA CONNECTED) CONNECTION--D/d (EXTERNAL CLOSED) CONSTANT RATEING FROM--1.290-908V CONSTANT CURRENT FROM--908-690 VECTOR GROUP--D III

1 1717

pls someone send me sample question papers along with the key.thanks in advance

HPCL,

1006

why electric shock due to dc is dangerous than that of ac

8 4937

What is different between Metering CTs and Protection CTs?

4 10181


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Un-Answered Questions { Electrical Engineering }

what is cogging and crawling

1192


use of choke in APFC panels

3334


main difference between ac and dc?

403


Why L.T.Cable voltage rating is 1.1kV,where as system voltage is 0.415kV?

1013


what is the difference between earth leakage and earth fault?

902






In a Impedance Based Distance Relay (Quad Characteristics) - Could there be two different Line Angle(RCA) for Ph-Ph & Ph-Gnd? If So Kindly Let me Know.. Where, What are the advantages of the same?

196


What would cause a 240v choke that should give 110v out on a 16w lamp to gradually increase to 160v?

884


What will happen if we on 200kvr capacitor bank(11kv in bus)If there is low load on transformer (1.5 mva 33/11 kv)

244


What is the difference between acs 550 & acs 850

3672


How one may guess the direction from which the distribution line is incoming if there is no pole plate on poles?

713


Why two phase welding machine is used instead of three phase welding machine.

484


In my power station 220 volts dc battery set. they coneected 84th cell taped

439


what is RFCT and Insulgard Relay & It's function?

759


After doubling voltage from solar cells & use step down voltage transformer can we get high current output with low voltage.

684


Zone of protection and tripping scheme of arc protection relay.

630