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

Electrical Engineering Interview Questions

Questions Answers Views Company eMail

What are locations arc protection relay is fixed.

KSEB, L&T, Siemens,

1881

Zone of protection and tripping scheme of arc protection relay.

KSEB, L&T, Siemens,

1871

High speed earth switch operation with diagram

KSEB, L&T, Sanden Vikas, Siemens,

2489

Difference in load break switch, isolator and circuit breaker.

KSEB, L&T, Siemens,

1 3909

If breaker is undefined position, first step to do.

KSEB, L&T, Siemens,

2264

Load break swicth maintenance procedure.

KSEB, L&T, Siemens,

1771

What is double throw isolator and single throw Isolator.

KSEB, L&T, Siemens,

1 6866

After taking shutdown of 11kv feeder, if you see 5kv by phasing stick in the cable side, is it possible to close earth switch in cable.

KSEB, L&T, Siemens,

2356

What is the main feature of v/f control?

1 3090

will 1050kva DG set withstand for back charge of 16MVA transformer

1855

How to calculate percentage impedance of a power transformer.

1 2715

why we earth only one side of a power cable. And which side is advisable to earth.

1 2779

What is the difference between earthed and unearthed power cable.

1 3086

What happen if a 18 watt fluorescent tube is used on 36watt choke,which one damaged or not damaged, if damaged why that damaged?

Bharat ITI,

2 3281

3 phase induction motor rotor field rotate at synchronous speed w.r.t ?

3 4054

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Un-Answered Questions { Electrical Engineering }

why power factor is important?

10359

If breaker is undefined position, first step to do.

2264

What is the difference between single core 2 wire and single core 3 wire system? Which application we are using this? and for What purpose we are using this?

2344

is there any current and voltage drop on liquid resistance starter water/soda tank ?

1988

How short circuit MVA(Fault MVA) in a power system calculated for calculating number of earth plates ?

2301

What is domestic transformer? Draw the connection of domestic transformer.

2320

How to calulate Locked rotor amper(LRA) for compressor type motors?

1779

What is the polarization index value ? (Pi value)and simple definition of polarization index ?

1211

HOW DO I CALCULATE THE SETTINGS FOR THE DIFFERENTIAL PROTECTION OF A 12kV/6.6kV, 6MVA,DYN11 XMER WITH PRIMARY SIDE CTR 400/1 AND SEC SIDE CTR 600/1?

2610

Can any answer me ,What will be the range of C.T coil for L&T energy meter EM301 used for 180 kva DG set

2197

Give me the calculation steps to design an electromagnet to be work in 230V 50 Hz AC Supply. Also give force that is created by that electromagnet when it gets energized.

2214

What is effect on in zone and out zone fault if CT chosen for phase side is Vk/2<5mA and Neutral side is Vk/2<15mA on REF protection of Transformer

2376

If the Brush of DC motor is shifted by 90 deg, then what happens to voltage and torque? Both voltage and torque are zero. how to justify the answer?

1451

In HVDC LINE RECTIFIER CONTROL ON CONSTANT CURRENT AND INVERTER CONTROL CONSTANT EXITATION ANGLE CONTROL BUT HOW INVERTER CONTROL CONSTANT CURRENT?

1963

What is resolver and glass scale in CNC how they work?

2280

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