Electrical Engineering Interview Questions
Questions Answers Views Company eMail

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

6 10555

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??????

639

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??

4084




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

8 3890

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

3 7428

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

16 26985

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

624

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

1 2151




what is neutral plane shift?

1 3713

In Power transformer oil temperature or winding temperature will be high

3 8748

what is differnt between metering CTs an protection CTs

10 7325

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 1655

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

HPCL,

969

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

8 4850

What is different between Metering CTs and Protection CTs?

4 10027


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Un-Answered Questions { Electrical Engineering }

In an ideal transformer no load primary current I0 A lags behind V1 by 90 degree B is in the phase with V1 C leads V1 by 90 degree D lags V1 by 45 degree

858


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

559


what is the use of Auto re-closer?

761


if main CT is of ratio 50/5, and meter CT is -/5 what will be overall multiplying factor of meter.PT is 11000/110 .

335


How Self works in DG set

467






what is the voltage regulation for unity and zero power factor?

923


can you plz send l&t aptitude questions if available its urgent plz plz plz

783


what type of motor used to move a 1 ton gate? and relate ratings with load.

502


What is domestic transformer? Draw the connection of domestic transformer.

971


Pls explan the OLR setting in VCB at HT yard

1204


what is star delta starter? how it works? give its control and power diagram.

777


Why earthing is necessary for any equipment?

335


Why should we hire you over the others waiting to be interview?

1468


transformer phasor diagram under load explain it?

834


draw the restricted earth fault protection circuit install on power transformer and identify its parameters and draw C/C curve of it

1317