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

Electrical Engineering Interview Questions

Questions Answers Views Company eMail

Difference between UPS and Inverter?

HCL,

7 12616

How to configure the drives in PLC, through Profibus commnication. And to how to address it?

2841

How would you supply a single house hold load from a 3-phase supply coming out of a sub-station?

Power Grid,

4 8689

How would you supply power to a village which is very far from a sub-station and has only a 11k?

Power Grid,

4 8484

At site, we have 30Kw motor (3 phase, 400V,50Hz) and FLC 54A as per the nameplate. At the time of starting it draws 840A instead of 390A (7.2%). As per the data sheet also its 390A starting current. it thru a dol starter from the MCC. can anyone tell what is the problem in the motor

ME,

5 11219

what is the load amp for 1 HP 3 phase Motor ?

15 66079

how much Hp motor is required for water suction pump in home uses ?

1 5236

What is the Derating factor of power cables when exposed to direct sunlight in (both PVC & XLPE).

1 5480

what is different between installation and commonissonig.

3 5730

tell me about eletrical contractor

TATA,

1957

why it is not advisable to run low rating (19KVA) DG sets in parallel for long durations even though they are provided with droop ckts (QDC)

1907

hai iam arunkumar. i have applied for an section enginner in rrb. i want lat 5 years solved question papers. if u have please sedn it to arun30682@gmail.com

RRB,

1823

What are the causes ,revers rotation of a kwh meter?

2 5697

What is the difference between a Junction Box and a Marshalling Box?

8 130502

IN 3 phase induction motor where we give i/p supply & how its working ?

2 4523

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Un-Answered Questions { Electrical Engineering }

what is cause of static electricity? I experience shock when i touch metal equipment in a room ,furher check shows earth leakage showing 80ma at the DB near to the 400 MCCB?

1908

What does the letter CTNM in negative phase sequence relay means?

1815

How to calculat the ratio of HT\LT in energy meter

2715

what are the safety measures of induction motor?

2048

What are the types of windings according to the construction?

1120

Explain how you intend to work under pressure to meet up with deadline target?

2393

HOW TO CHECK THE VECTOR GROUP OF A TRANSFORMER YD11?

3622

relation between power station capacity and voltage level?

2059

We have two APFC panels in same station. I need how to connect CT in two APFC panels.can we take one CT in series connection or two separate CTs.

1527

How may I get the maximum current capacity for a particullar size Alluminum or Copper cable if there is compulsion to use?

1921

how to calculate the power factor when instantaneous voltage and current has harmonics in it ?

1964

State the frequency for rc phase shift oscillator?

1126

How we can come to know the substation range,without go through any name plate ?

2109

If we have use two power cable for incomer, that time how many use cbct for earth leakage protection? 1 or 2 if 1 way? If 2 way?

2104

what is a types of short circuit and what is a types of distance protection tests

2258

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