Electrical Engineering Interview Questions
Questions Answers Views Company eMail

What is bandpass of a transformer?

2 4264

When a square wave is applied to primary of a transformer then what will be output wave form of secondary ?

Sail, TCS, Bhel, Sterling Telecom,

15 36950

please send me the L&T Emb. sys. placement papers and entire details of pattren

L&T, HMM,

1055




Why we connect the capacitor in Delta?if we conect in Star what will happen?

9 25391

What is IGBT?Where it is used? What is the difference between IGBT and Thyristor?

HBL Power Systems, AC, Formo Plastic, SECL,

5 56914

What is mean by diversity Fator?

7 15671

can we use 220 volt 15 w a.c. lamp on 220 volt d.c.

Philips,

11 13174

Explain Clearly Pahase and Neutral?

7 7026




Why the Motor takes High Current in Starting time?

5 8215

What is the difference between Surge protection device and Lighting arrester?

6 11556

Explain the working principle of Synchronous Generator and Assynchronous generator?

TATA,

11 44302

why the current leads voltage in the case of a capasitor

Infosys,

9 12880

Motor also having losses, we call KW rating. In transformer and generator having losses but we call KVA Rating why?

9 10401

The rotor current is directly proportional to slip. How?

3 5094

How the starter control the starting current in three phase AC Motor?(In DC apply the reistance).

6 11257


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Un-Answered Questions { Electrical Engineering }

Whats the minimum value for I.R. that can be allowed for HT & LT alternators for operation?

2339


is EEE eligible for getting electrical supervisor certificate ? if yes then from which state i sud apply

1100


1. Why is the speed of shunt motor practically constant? 2. Why dc series motor use to start with heavy loads? 3. advantages & disadvantages of separately excited generator over self excited generator?

1120


what will happen if ac and dc supplies given

890


what is KSR type transmission tower? What is LSR type transmission tower?

2400






how to carry out Magnetizing Current Test on Distribution transformer and what purpose we are doing this test. why transformer rating in always in KVA ? what ispositive, negative, zero sequence impedence? How ElCB tripping if Neutral touch with ground Why AC & DC capacitor are use in UPS ? why motor rating in KW? how to syncronize two dg sets

901


What is the current carrying capacity of 0SWG,3SWG,10 & 12 SWG solid bare overhead copper conductors?

2043


Starting Time of LT & HT Motor

710


pls tell us AC plant are how do work and parts name with picture

698


for what purpose the star point is done in ct

170


why 3 phase is converted into 2 phase using electronics circuit why not 2 phases are diresctly putted from the 3 phase transformer??

894


What is resolver and glass scale in CNC how they work?

812


Give idea about General Engineering. From which book i can study this topic. Pl. reply me via email. My email is ravi@bhelhwr.co.in, also give the name of book/website, from where i can prepare it.

848


What is open delta Xformer? It's adavntages & Use?

911


what is d check in dg 1500kva

807