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Electrical Engineering Interview Questions
Questions Answers Views Company eMail

any earth foult trip the relay but in welding time not trip by earth foult

Power Grid, Siemens,

2292

Explain Circuit Breaker Trip Characteristics in detail.

L&T,

1166

why tan delta test is carried out in the power transformer? which parameter are measure?

1 3314

can we use IGBT as a AC-DC converting device in the applications?

2 2664

placement paper samples of mspl company

MSPL,

1029

What is meant by sotf,lbb,power swing,pole discrepency,auto reclose?

Bunge, Electrical, Omega, TCS, TNEB Tamil Nadu Electricity Board,

1 5360

How to discharge the battery as quickly as possible ?

1 2431

What is the difference between rated and maximum speed of 3phase induction motor.....? Can the motor speed exceeds the rated speed..?

1 3215

Is there a standard depth of gravel fill in Substation Switchyard? Please give a design/drawing. Thank you.

4141

Why capacitor blocks DC current?

2 1982

Why AC current leads voltage in capacitor and how?

BMB,

1121

What is the difference between voltage and emf ?

DRDO,

3 4889

What is the function of a capacitor in a ceiling fan?

2 3717

What is complex power?

DRDO,

1 2195

Why the power generated in dams is complex power? Why the generators in dams cannot produce Real power directly (i.e power which has zero reactive part)?

910


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Un-Answered Questions { Electrical Engineering }

briefly explain principle of resistance welding

949


why we use condenser in the thermal power plant, althrough the same vapour will be again heated

3101


How do you compute voltage drop and cable size over distance?

1342


is that a problem if i connect a single phase load to a secondry delta connected transformer but i get a neutral from other transformer i the system?

1035


why current flow to the opposite direction of flow of electrons???????????

1224






Define settling time.

190


Is it possible to protect 3phase overload and earth fault of the 3phase system using two CT's.

1132


What is PQA???Applications........

1425


Difference between transition and diffusion capacitance

1641


Why the symbol of register is "zig zag"

582


if we install two earth pits with a clear space of 5m without any interconnection,by checking the digital multimeter will it show continuity between earth pits? If so what would be the approx. value

1019


Can the output voltage of a rectifier be greater than the input AC voltage without the use of any voltage multiplier in the circuit??please provide the explanation too..

1149


how  do you choose the cable size as per amps rating & the voltage drop for the same.

913


What is the formula to calculate distribution transformer De-rating on iron losses basis

959


Vibromotor 252MV 1/4HP2P..what is mean by 252MV?

997