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 3185

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 4445

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

2 4415

what is the earth resistance

Micron Electricals,

4 5976

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

2 3972

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

Videocon,

1961

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

Videocon,

3 4583

what is rating boiler

1537

expansion of rccb

Videocon,

2 4148

What is the intent of short circuit studies?

3 4239

how and why are capacitors are used to improve powerfactor?

4 5331

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

6 47399

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 2710

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 3222



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Un-Answered Questions { Electrical Engineering }

why transmission is only 3 phase and not 2 or 4 or poly phases

1685


WHY RATING OF VCB NOT LESS THAN 630A

2003


What are the uses of stepper motor?

689


Why back emf used for a dc motor? Highlight its significance.

639


hi can anyone pls tell me the eee interview core questions asked in l&t

1521






what is meant by vector group of a transformer? How can it be derived?

1491


How to calculate impedance volt in Transformer?

1528


What is the basic principal, by which DC voltage level is increased more than the supplied AC voltage during conversion. As upto AC level it is contorrled by firing anlge but after maximum level how is it possible.Please clear picture. OR we have to supply the higher level AC?

1450


orifice sizing how done, checking & selection

1365


Difference between control junction box (cjb) and power junction box(pjb)?

2905


what are factors to be consider to design a HT & LT motor?

1791


What types of CMOS memories have you designed? What were their size? Speed? Configuration Process technology?

3113


What is PQA???Applications........

1860


What do you mean by per capita requirement of electrical energy in india

1628


What are the three constants associated with a steady state error?

690