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

Electrical Engineering Interview Questions

Questions Answers Views Company eMail

how to convert kw in to unit

5 8089

how does the harmonics enter into the induction motors?

1 4078

define briefly the function of an ac electric generator (alternator)?

1 4976

Hi friends I am a service engineer in electrical field i plan to shift design engineer in same field, so i request your suggestion for what software or course i want to learn ?

5 7236

WHAT IS THE USAGE OF Buckoltz relay IN POWER TRANSFORMER AND AND HOW ITS FUNCTIONS?

3 6350

How the PF control while running DG set with load

2133

why some time Railway Fan not Rotate,But after a small rotation by human then it rotate normally? Why?

4 7142

what is the relation between reactive power and power factor for the what is the limit of reactive power and power factor

2072

what is the difference between electrical & electronics?

JSW,

4 9104

Whot is the difference between MCB and MCCB.Whot is the selection critearea for MCCB and MCB for 63 Amp.

5 9387

How does flights get the neutral(grounding)

1 4415

Whot is the braking capacity for MCCB. How we select different braking capacity.

1 3855

For refrigerators the motor current is raised beyond its rating on both conditions when the voltage of the system is more(say 270v) than the rated voltage(220v) as well as when the voltage of system is less(say 160v) than normal voltageof 220v, why explain?

Electrical Tech, UPSE,

1941

length of 4 core cable 95mm from substation LV VFD panel to Motor at field approximately 150 meter. Motor stop and power has been isolated from LV MCC ( Substation )to disconnect Motor for services. After Motor completed service propose to reinstall and reconnect Motor Cable, found earth cable sparkling during touching at metal / motor body. Inspect by clamp meter found earth cable have current flow AC 1-2amps and all earth cable at MCC LV also have current flow as same value. why it is happen?

2 6040

what is ring system ?

Bhel, Sabic,

3 6480

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Un-Answered Questions { Electrical Engineering }

what heppend if we are connected u1-v1-w1 as a star point in the place of u2-v2-w2 in power genration

2193

How to calculate no of EARTH PIT? Describe the formula as per IS standard?

3775

IF alternator SCR value will be high means what happen in alternator efficency at operating power factor of 0.8

3836

I have an existing old MCCB. ABB Model SACE, the rating are: Ue = 660 volts, Iu =1250 Amps, 3 poles, Ith (max) =800 amps at 45 deg C. I need a circuit breaker for my 3 phase motors, 380 volts 60 hz. the supplier required the minimum ampacity of the breaker to be 911 amps. can i use this breaker with rating of Iu =1250 amps but Ith = 800amps maximum?

2273

Do you need any help with FEWA Electrical Supervisor exams?

970

Control wiring of a dol starter for forward and backward

1541

What will be advantage if we put some load in neutral of grounded star transformer & loadshortcircuit current,rated current of cable & MCB with example?

1826

Please provided formula for calculate the cable size from step up transformer to M.V panel, run overhead aluminum cables, total load is 5mega watt, total length 900 feet.

1720

Why we find the sensitivity for the CT's to check?

1826

how does ELR works? explain

2640

Which test will be more severe for VCB?

2620

in my working site. momentary jerck in electrical supply ocurred frequently which cause of multiple losses in our electrical equipements. how can we protect our electrical machines and equipements in this situation.

3434

What is dynamo?How it works and what is the function of dynamo in a DG.

2531

how ups works ? various parts of ups and working principle

1940

How to calculate mf when meter equipment and meter are connected

1692

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