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

Electrical Engineering Interview Questions

Questions Answers Views Company eMail

State the difference between Surge Arrester and Lightning arrester,Both are same or not?

7 39252

please mention the minimum IR value for different voltage systems

6 8992

which types of tests are required after commissioning of 6.6 kva tranformer?

Reliance,

3 6634

What is battery Limit ?

NDDB,

4 25158

Why electrical heaters are not provided with overload relays in circuits

1 5015

In transformers Which type of connection is preferred for harmonics to be minimum. primary : secondary star without neutral:open delta star with neutral :open delta star without neutral: delta star with neutral : delta explain why

Genco,

1 5209

The exciting current of a transformer is non sinusoidal. why?

2 11440

Why one can experience electrical Shock due to Voltage or Current?? or both voltage or current??

11 15633

Give the selection criteria of a 3 Phase transformer for industrial purposes ?

NDDB, TATA,

5 12435

what is the difference between between open delta and broken delta?

Reliance,

5 28935

can any one provide some material?

1 3658

what is the requirement of commutator in a universal motor?

3 5855

Which pump set is more suitable and economical for liftingwater from 300Mtr borewell? A. Compressor Pump B. Submersible Pump C. Jet Pumps D. 25HP Centrifugal Pump Q. from PSC Test 22-11-2008 Meter reader

8 24687

Why Neutral Earthing pits and body earthing is interconnected

Taj Group,

3 15633

Why Earth pits are inter connected

Airtel, Taj Group,

8 21123

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Un-Answered Questions { Electrical Engineering }

defination of controlled shunt reactor

2303

how can tell us the AC indoor or outdoor which Tr and formulls

1816

What is sensitivity of a measurement?

1190

Why reactive power is needed in a power system? How is it being absorbed or delivered by alternators? For reactive power control we are changing excitation but reactive power absorbing or delivering related to stator. How these two are interlinked? i want a detailed explanation with necessary expressions and figures?

1965

SUTIABLE FOR ohm's law super conductor

1998

If a rotary UPS is in line through grid power; What would be the impact on Power Factor if the load through rotary ups is 25% , 50% , 75% & 100%. Will the power factor reduce with less load?

1933

FEINGING DECREASES THE FLUX DENSITY IN THE AIR GAP. HOW?

2251

Who are the manufacturer for Nitrogen based Fire Protectio/explosion prevention for Oil Filled Transformers? India and international both?

1978

State uses of different types of stsrters with different capacities of motors as below: a. up to 5HP b. above 5hp to 10hp c. above 10hp to 20hp d. above 20hp

2138

limitation of conductor height on ground when we consider EMC

2097

what is difference between bus coupler and auto transfer switch

4271

How many types of oil using in H/T & L/T Oil Circuit Breakers. need Explenation ?

2978

how the speed of the gets motor regulated. does it draw the same current on the all speed level.

2033

What are the basic elements used for modeling mechanical translational system?

1186

Is it required to lay 2 runs of GI wires along with armoured cables from one power DB to another Power DB?

2002

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