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Electrical Engineering Interview Questions
Questions Answers Views Company eMail

how a.c. genarator control power factor when its conected to grid supply by incrising or decresing excitation voltage.

1 2019

what reason of line current and phase current in star connection and line current and phase current not equal in delta connection?

Suparco,

1104

Why D.C Voltage used in Meggering...as well as in Hipot test? why not A.C?

2 3654

What will be the capacity of the generator set which can be used for my 2 ton window air conditioner ?

1 2110

At what voltage domestic tubelight works?

Cigfil, L&T, MNC,

2 6256

As we know induction squirrel cage motor torque Directly praprortinal to applied voltage in star connection & delta also. If I connect 55KW Motor to DOL starter in load condition does motor withstand the load & what will be the current withdrawn ? motor will not fail ?

959

why generally transformer are in star to delta

3 3321

Is it benefitial to supply 210v ac to lighting fixtures instead of 240v ac?

2 2460

Can I use 1 phase power supply to run 3 phase motor? If yes, how?

Enercon,

6 5014

Can I use 1 phase power supply to run 3 phase motor? If yes, how?

6 4491

To determine the Healthiness of Insulation we will be performing Dielectric tests i.e Insulation Resistance test, Partial Discharge test,Switching Impulse, Lightning impulse, Tan Delta test ...etc why we required to perform this many test, why cant we do only one test. for Transformer, CT's

1 2173

The armature of shunt dc motor has 0.8ohm resistance and motor is to run on 120V circuit.If motor is suddenly thrown on circuit while armature at standstill then current drawn by motor will be??Also back emf in normal running is 110V

1 3772

If a shunt Dynamo has induced emf 100V and 0.4 ohm resistance and battery of accumulator of open circuit emf 110V and 0.5 Ohm resistance are in parallel what is common terminal potential difference?

2405

why transmission is done in delta system

4 8048

Am i eligible to get electrical supervisor licence? As i did diploma as well as degree in Electrical Engg. in June 2011. Now i am working in 15 MW Power plant from 2 mnths. i belongs to Maharashtra.

1 3701


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Un-Answered Questions { Electrical Engineering }

How DC earth leakage currents can be reduced ?

1002


what is the IPC ? & what the uses ?

474


Describe the colour rendering properties of i) tungsten filament lamps ii) tubular fluorescent lamp

2115


why electronic instruments is more favorable than electrical?

1053


What is the previous name of Cox's Bazar

968






WHAT IS THE FORMULA FOR CALCULATING CURRENT RATING(DIRECT IN GROUND OR AIR) OF ARMOURED(XLPE) CABLE OF 4C,16Sqmm?

1180


why we take movement of rotor always in counter-clockwise direction in 3-phase induction motors?

1043


why do we not use equivalent voltage source in negative sequence equivalent ckt.

1171


What is evaporator & condencer & compressor

1103


How colour picturetube works & how many year it will works.

1031


What is Negative Potential Bias

1339


How to arrange a hous hold earthing system to keep minimum earth resistance( below 7ohms).

1091


How many points does a Circuit can have?

1011


How to calculate approximate load loss of a distribution transformer by knowing %ge imp of transformer?

1216


What is the complete procedure of erection of electrical panel in industry

885