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,

2736

Explain Circuit Breaker Trip Characteristics in detail.

L&T,

1683

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

1 4047

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

2 3499

placement paper samples of mspl company

MSPL,

1521

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

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

1 6191

How to discharge the battery as quickly as possible ?

1 3056

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

1 4055

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

4827

Why capacitor blocks DC current?

2 2917

Why AC current leads voltage in capacitor and how?

BMB,

1625

What is the difference between voltage and emf ?

DRDO,

3 5965

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

2 4616

What is complex power?

DRDO,

1 3001

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)?

1331


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Un-Answered Questions { Electrical Engineering }

why we use sinosidal voltage / current instead of others in system?

1670


Why the efficiency of a three-phase induction is the motor is less than that of a three-phase transformer?

724


I have 2 KW electric water heater.I am gonna use it in controlling water temp.so I needed to increase or decrease the heating capacity.is there any electrical-electronic circuit for varying the resistance & so current?

2594


What is fault clearing time for Current Limiting Moulded Case Circuit Breaker?.

1335


What is the comparison between 30mA DP RCCB and 100mA DP RCCB and can replace it against 63A MCB

1127






WHAT IS DEGREE OF COMPOUNDING IN D.C MACHINE MEANS? HOW TO READ THE OPERATING CHART FOR ANY ELECTRICAL MACHINES?

4278


What are steps to be taken while designing of DYN11 distribution transformer to achieve magnetising balance?

3122


what is the role and fuction of automatic transfer switch in rotary ups

1448


What is the difference between isolators and electrical circuit breakers?

632


how will calculate the safe starting current of 3-phase squirrel cage induction motor?

1452


how to find ratio of CT & PT in 66/11kv 12 mva supply system ? explain with calculation.

1892


where does 22kv line starts

2679


what are the interview question asked in wind mill about electrical

1931


Why we use 4-20 mA Analog signal for the PLC input? Why not 0-20 mA? Why not 5-25 mA?

2486


which type of motor is used in automatic swing gate

1575