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

Electrical Engineering Interview Questions

Questions Answers Views Company eMail

why the desirable efficiency for a motor is 60%, but in case of transformer, it is above 90%?

1 4083

how to calculate Amp, 2 different Amp of batteries? Example: No. of Batteries = 2 Battery voltage = 12V 1st Battery rating = 17AH 2nd battery rating = 30AH between parallel connection then output volt 12v Amp?

Bhel, LG Soft,

2 5360

Can we use droop CT in neutral in place of W phase of alternator ?

2 5510

what is the earth resistance

Micron Electricals,

4 7823

For 6600/433 distribution transformer we apply secondary side 433 volts how much voltage in primary side.

2 5121

how can calculation ate Amps for cabel. Ex-for 1sqmm wire hou many amps we can draw

Videocon,

2457

can u tell the difference between star-star transformer and delta to delta transformer.

Videocon,

3 5940

what is rating boiler

1992

expansion of rccb

Videocon,

2 5173

What is the intent of short circuit studies?

3 5470

how and why are capacitors are used to improve powerfactor?

4 6810

why do we use star-delta starter. what is its need?

6 49478

whenewher three phase supply is given to induction motors revolving/rotating field is created & rotor rotates.When the three phase supply is given to three phase transformer then revolving,/rotating field is created or not? if not why?

1 3440

how could we findout the lightning arrester failed or not in live circuit? Is there any instrument to measure the high voltage at the time of sky lighting?

1 4039

ELECtrical

Bahwan Engineering, Bhel, Electrosteel, NBCC, Qatar Airlines,

2 5281

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Un-Answered Questions { Electrical Engineering }

Metal covered multiconductor cables shall employ a marker tape located within the cable running for its complete length in lieu of cable surface marking. Is it true or false?

2266

What will be result if we connect LT votage to the terminal of HT motor?

2145

our factory is going under construction mean time transformer 1000 kva 2 nos &load break swithch 12 kv & 4 nos 750 kva 2 nos & 380 kva 2 nos generator to be errcted.how to arrange earth pits &how to earth connect & neutral pit how to calculate in earth bit size.

2110

How to design the NGR Resistance

2075

Which is the oldest hydropower plant in india?

1147

LT cable fault chaecking equipment and to find out the distance at what distence it failure . Name and where it is available?

2168

percetans

2186

what is cascade speed control device?and how this device control the speed of motors?

2157

Show the schematic arrangement of diesel power station layout and give its principle of operation.

3038

what is effect of 5amp fuse on 2mva pry protection of transformer

1853

What are the properties of a resistor?

1112

what are the 4 rules to start the motor?

2120

State the formula for overall efficiency of thermal power station

3037

does buccholz in a transformer use batteries

4878

Which do you think is the most significant cause of energy loss in a factory?

2241

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