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 400kv line is connected to the load but neutral ii not be connceted then wt ll happen

1 3897

what is gapless metal oxide techniques?

1 3426

why generator is star connected ?

Voltech,

3 19403

I have a 33 KV sub stn with two mother transformers 33/11 KV of capacity 3150 and 1600 KVA respectively. The total connected load 16809 KVA(11/0.433KV).how i calculate the max current & how i decided the CMD.

2 3496

What is the rate of WCT on the Electrical Contracts comprising of DG Sets and Civil Works in Delhi ?

MES Military Engineer Services,

2191

Application wise, where we should use AC motors and where we should DC motors?

Nespak,

1 4064

eddy current losses depends on?(a-max magnetic feild,b-avg magnetic feild,c-on frequency,d-on square of frequency)?

Ecil,

3 5627

For small size, high frequency coils, the most common core material is- a. )Air b. )Ferrite c.) Powdered ion d.) Steel

Ecil,

2996

Sparking occur when a load is switched off because the circuit has high – a.) Inductance b.) Capacitance c.) Resistance d.) None

Ecil,

3 12985

how do we calculate cable sq mm size,that if 50 A load

GTL, PowerTech,

2 5286

can we start slipring motor on star delta like we start induction motor ? if yes where will we connect ?

NovaTech,

1962

VCB in closed position during opertion if vaccume break then what will happend? it has any protection ?

1 3751

For Eg a 30 kw motor at full load how much kw it takes And at no load how much KW it will take?

GEPL,

1 3405

For an induction motor wat is the loading/unloading cycle duration or interms of L/UL ratio/ percentage?

GEPL,

2107

At full load wat is the motor p.f And at no load will is the motor p.f?

GEPL,

2124

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Un-Answered Questions { Electrical Engineering }

how to maintain frenquncy with syncronising sub-station for distribution

2129

HI....HOW CAN BE MESARED THE VALVE OF NEUTRAL GROUND RESISTOR WHIC IS LOCATED AT SWICHGEAR ON GENERATOR SIDE....

2086

Define peak time.

1144

what is a power factor?

1812

In ACS 1000 drive we are using 12 pulse converter,why don't use 3 pulse converter.

2017

can i connect REF and Differencial relay in 1 CT core for transformer protection?

1947

how to calculate the cable current ratingand and how much of distance the rating will be ok will the distance is incresed what the action we take

2128

Explain Need of a starter in a dc motor.? Also explain any two starting and speed control method of dc motor?

1720

What is the formulae of Megger value for a A.C.Motor

2894

Define characteristics impedance?

1129

How generating electric power export to grid from the generating station ?

1878

What are the special cables required for explosion proof wiring?

3576

difference between power surge and switching transient

2093

what is the electrical?

2108

How to protect a Dosing pumps/any sensitive equipment (single phase) from surge protection inside a food factory.

1747

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