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Electrical Engineering Interview Questions
Questions Answers Views Company eMail

What is switch gear? How it is work ?

AbaQulusi Municipality, Lupin,

1 4724

How is efficiency of DG set calculated? At many places I found the efficiency to be mentioned in percentage. But at some other places I found kWH/ litres. I want to know how dimensionless percentage value is arrived at?

ADS Spirits,

1917

How are load losses and no-load losses measured at site in a DG set?

1750

HOW WE WILL CONNECT THE PHASE CTS AND NEUTRAL CTS TO REF RELY

3 5734

what will be the maximum winding temperature of 6.6kv HT motor 450kw, Full load current 49A. 50Hz Frequency.

DVC,

3238

what type circuit breaker is suitable for connecting 1000A load VCb,Mccb?

Gridco,

5 7435

725KW Three DG set Synchronised but DG no-1 power showing 750KW DG n0-2 power showing 500KW DG no-03 showing 500KW. DG is Shynchronised but why this different power showing?

3 5850

WHY WE ARE DOING THE EARTHING IN A SYSTEM. SOME PEOPLE ARE TELLING FOR PROTECTION. WHAT PROTECTION GIVE ME THE CORRECT ANSWER.

2 4620

What is the use of Exciter in generator? & what will be the current of Exciter in 500 KVA DG Set?

2 9827

is there a different b\w ground fault CB and earth leakage

1 3584

why the active power flow of some line is increased when the active power of out is cut ?

TAFE,

2052

i have 400/230v transformer and didnt done the neutral eatrhing. i connected one lamp to one phase and neutral to the earth. but the lamp is not glowing. again i connected neutral to earth and repeated the same. then the lamp is glowing. in the first condition i tested with a line tester also, at that time the tesrer is glowing what is happening i dont know can any one help me?

1 3628

A 60W,250V bulb when connected to a 230V supply will it give more light or less or will be give normal light?

MahaGenco,

3 6802

what happen when we add mentos in cold drink?& why?

2059

What is the material used for the core of a high freiquency transformer?

Videocon,

3 5960


Post New Electrical Engineering Questions

Un-Answered Questions { Electrical Engineering }

Thermal withstand capability under full short circuit conditions, in terms of number of times of occurrence of short circuit and corresponding anticipated percentage reduction in transformer life.

2440


role of europe union in UK safety legistlation (electrical safety)

1772


HOW WORK HEAT PLATE EXCHANGER

1992


How to synchronization will be done between two DGs ?

1773


Why the field rheostat is adjusted such that the voltmeter reads 380V

2296


how can i determine the KVA/MVA rating of transformer precisely?? is there any standard test?????

2392


Why did lightening arrestor solid copper rod head is sharp on mobile tower top?

2016


why do motors burn out? I understand why adding parallel loads to a power source means more current moves through the circuit, and can destroy circuit elements by overheating. What about when you have a vaccuum cleaner intake flush against a floor, a room fan sitting directly against a wall, or a power drill trying to drill through something too hard?

2073


why is using sensor?what is differece between photoelectric and proxmitty?

2005


what is under coal gassification?

2092


Vaccum circuit breaker

1390


WHAT IS DEGREE OF COMPOUNDING IN D.C MACHINE MEANS? HOW TO READ THE OPERATING CHART FOR ANY ELECTRICAL MACHINES?

4869


What willbe change in programming when we use 5/3 solenoid inplace of 5/2 in operating of a cylinder?

2061


Draw a 230kv two-bus bar system showing the following. 1.Two generators (150MW) each connected through one 15.75/230KV transformers 2. 1 outgoing lines 3. Two 230/130 KV transformers 4. BUS PT's 5. CT

2587


Define the term Capacitance and Inductance?

1109