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Electrical Engineering Interview Questions
Questions Answers Views Company eMail

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

 1 1446

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 1642

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

ACPL,

1 1462

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

 1 1860

what types of cable used in underground coal mining?

 1047

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

Getco,

1081

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

 1158

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

Getco,

949

Generator,motor and alternator Working principal Please explain easily

 987

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

 923

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

 1027

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

Roche,

938

how electrical earthing maintenance done in industry?

L&T,

1017

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

 963

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

 1072

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Un-Answered Questions { Electrical Engineering }

what is the significance of terminal voltage and phase sequence in the operation of paralleling of two generators?

2012

What will happen to the protection and metering, if the polarity of a single or two PT/PTs in three phase system is reversed? Please provide reference if any.

1712

What is the capacity of the Fastners 12mm?

1884

what is the effect of power factor of machines in starting current

1507

what is diff. between earthing grid,earthing mess, earting grid?

1849




What is the difference between Generator Differential Relay and Transformer Differential Relay?

1706

what is the circutor?why we use it ?

1822

what is accuracy ? in any meters , coils accuracy . how can u defined that ?

1913

Why armature rheostat is kept in maximum position?

628

what would happen if reactive power (kvar)is increased (more)or decreased (less)? how much exact reactive power should be maintained? and what should be done for that

1767

what do u understand about FACTS? how they are useful?

1522

What is the function of RCBO? What are the different sensitivity ratings & each application?

2128

How is the connection of the tap changer on the HV side been made?

1502

how to measure the transformer resistance values(dyn11)?and howmuch the minimum value?

1651

A cotter joint is generally used to transmit

784

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