Electrical Engineering Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Electrical Engineering Interview Questions

Questions Answers Views Company eMail

IF 3 NOS.OF HEATERS,3KW CAPACITY EACH,1 NO.HEATER CONNECTED IN R PHASE,1 IN Y PHASE AND 1 IN B PHASE.THEIR END POINTS CONNECTED IN STAR.IF I CONNECT THIS STAR POINT TO NEUTRAL OR DO NOT CONNECT TO NEUTRAL.WHAT WILL THE DIFFERENCE.

3 6623

In 2500kva transformer how much is the withstand High voltage power frequency between primary to secondary and earth? And secondary to primary and earth?

Honeywell,

1 4540

1)What will you do if main incomer VCB fail in your site ?

Honeywell,

7 10546

why in isolation transformer we dont get any shok?

2 4626

wht is the purpose of the earth electrode other then earthing

1 2899

how r charge carriers produced

2082

what is power system transient condition

1 3568

what is thresold of perception

2075

what is positive , negative & zero equivalent system resistance

1941

is there interlocking between duty and standby chilled water pumps?

1 3976

I want to know if it is possible to use Variable Frequency Drive to reduce the current required for starting a motor?

Descon,

3 5277

How magnetic balance test of single phase transformer is done,Especially in ESP transformer rectifier set.

Bhel,

2 5877

pls send link about servo motor

3 5326

List out the types and name of the motor under their application?

1992

what is IP55,IP65

4 47352

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Un-Answered Questions { Electrical Engineering }

A low wet bulb temperature indicates

1159

How could I get a certificate of competency as Electrical Supervisor? I have completed By BTech in Electrical this year(2012) for VJTI Mumbai Maharashtra. Is it compulsory to be produced while joining?

3460

and gate circuit diagram,amplifier circuit diagram

2068

Define transfer function?

1160

how are reversing the direction of rotation of dc motor

1766

How 48-relay (incomplete sequence) functions?

4100

What is precision of a measurement?

1120

Can 33kva/415v transformer be run underground? If the answer is yes why and if the answer is no why?

1582

Is any AC drive(VFD) had a feature of DC injection braking? if available please mention the detail. i.e drive can supply braking torque when the motor in idle state.

2145

What is power distribution criteria for converting single phase unbalanced residential load to 3 phase star connected balance system. Does total KW converted to 3 Phase. Means Divided by root 3.

2326

HOW WE CHOOSE EARTH'S POTENTIAL AS ZERO V?

2058

What is zero of the system?

1103

what is the synchronous timer ? and it applications.

2396

witch pump used in wtp

2107

How to calculate KVA/VA rating of PT or CT from primary & secondary voltage or primary & secondary current?

2425

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