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Electrical Engineering Interview Questions
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how i calculate the size in mm of the LT 4 core cable for 100 HP inductive motor pump

 1 1528

If u take a kWh reading in 11 kV HT and 440 LV side at same time in yesterday today , then why LT consumed units 3-4℅ high as compared to HT units

Brigade,

1 1777

why ac wave is sinusoidal not square or triangular wave what will be reason

ACPL,

1 1547

what is reason in mv breaker the control supply voltage is dc not ac?

 1 1941

what types of cable used in underground coal mining?

 1102

condition Autotrip facia come on control panel of electrical transmission line?

Getco,

1130

How to calculate capacitor bank size at a load 800kVA.

 1215

what are the reasons of CT circuit faulty in busbar protection scheme?

Getco,

999

Generator,motor and alternator Working principal Please explain easily

 1036

From past few months I am getting lagging pf even though sufficient capacitors used in circuit. Where is the problem pls answer

 984

What is the current carrying capacity of 35sq.mm flexible cable?

 1064

What is the technical difference between On delay timer and a Star delta timer?

Roche,

995

how electrical earthing maintenance done in industry?

L&T,

1083

dc supply given to dc generator winding.how is possible? my knowledge is saying the winding will burn. please reply.

 1012

why we are not giving the zone 1 trip command to the master trip relay

 1120

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Un-Answered Questions { Electrical Engineering }

what is the criteria for selection of conductor used for ehv ac electrical dischrge

1646

how calculated Transformer losses.

1614

i have applied for the post of RRB section engineering chennai board please send me previou papers and solved answer. my mail id jagarapusrinivas@gmail.com

1530

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??

5113

what is mean by descripiency relay? & wht is its ansi code?

2663




HOW TO CALCULATE S/C,O/C,E/F OF ACB.

2180

how to calculate micom relay earth falt time and current sertting

1896

HOW TO CALCULATE THE VT SIZING?

2499

Why have to use copper cable for local isolator to motor ?

1690

what is meant by power and distribution transformer ?

1559

How we calculate the Multiplying Factor of Kwh meter for 3 phase alternator.

1445

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

1665

why electron produce magnetic field when it is in motion?

1729

how many types are their in switchyard or substation(like D,I TYPE), what is differant between them

1711

HOW WORK HEAT PLATE EXCHANGER

1557

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