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Electrical Engineering Interview Questions
Questions Answers Views Company eMail

Expand sqcm?

UltraTech,

2 2948

why motor rating in KW?

2 4145

why is power supplied in 3 phase only? why not in 2 or 4 phases?

11 25332

Dear all i am kumaravel. now in chennai. my work is control and relay panel auto cad designing.up to 11kv to 400kv then question is i am improving my knowledge. i want some books name and auther are available for this C&R panel related. plese any one help me

951

Why AC & DC capacitor are use in UPS ??????????????????

Sanghi,

1116

How ElCB tripping if Neutral touch with ground

Sanmar,

4 11276

how to carry out Magnetizing Current Test on Distribution transformer and what purpose we are doing this test.

CPCL,

1 9966

What is the acceptance value of leakage current in HI POT test

CPCL,

2 7442

why transformer rating in always in KVA ?

Horizon Computers,

4 4845

what ispositive, negative, zero sequence impedence?

1084

how to syncronize two dg sets

3 3647

how to carry out Magnetizing Current Test on Distribution transformer and what purpose we are doing this test. why transformer rating in always in KVA ? what ispositive, negative, zero sequence impedence? How ElCB tripping if Neutral touch with ground Why AC & DC capacitor are use in UPS ? why motor rating in KW? how to syncronize two dg sets

1223

why in large rating C.T.s equipotential wires are used?

Essar,

2 12595

why battery room in substation is black coloured?

4 12693

why voltage ratings of xmission are in 11, 33,66kv and why not 11.5 ,16,19 or any other

HCL,

2 4115


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Un-Answered Questions { Electrical Engineering }

define the active power?

1007


Is it required to lay 2 runs of GI wires along with armoured cables from one power DB Machines of higher rating?

1041


raleigh method

1141


plz tell me,ht and lt panel terminals in substations explain beiefly

1796


Please explain me about Relay curves and their sources to read ?

916






How Load Factor, Demand Factor, Diversity Factor etc best applied in designing an electrical circuit? Is it allowed to consider these factors in each and every panel in an electrical distribution system? Can any body suggest a good book for reference?

1962


when measure the core loss of three phase distribution transformer or three phase reactor loss, one phase shown negative watt loss. why??

1064


Define peak overshoot.

174


In synchronous motor, how the field current is related to armature current..i know its inversely proportional..but concept wise...i was nt clear....pls help me...

1107


any idea abt REVERSE METERING concept.........?

1181


when we decide to use soft starter drive or vfd drive in mcc to operate apump?

1126


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1102


How cable from Kit-Kat to main switch, from starter to motor are designed?

1103


what is under coal gassification?

1197


What is the basic principle of operation of alternators/dc generators?

160