Electrical Engineering Interview Questions
Questions Answers Views Company eMail

If the characteristic Impedance is equal to load Impedance then…… a) voltage will be increased b) power transmission is zero c) …… d) max. power is transmission to load

2 5075

The normal highest generated voltage in India is a) 6.6KV b) 132KV c) 11KV

13 25265

The corona effect is more in a) summer b) winter c) dry weather d) humidity weather

CPCL,

10 16338

ynchronous M/C with under excitation with reactive power absorption , acts as a) synch. Motor b) synch gen c) synchr capacit

4 4606

Why size of HT cable is less then LT cable inspite of the fact that voltage is higher in HT cable?

L&T,

2 7622

How will I know that how many batteries I should connect to my UPS unit?

3 8377

A 25MVA 3300/400V T/F is termed as per winding is …… a) primary 3300V & Secondary 400V b) primary 3300V & low voltage winding 400V c) High voltage winding 3300V & Secondary 400V d) High voltage winding 3300V & low voltage winding 400V

Engineers India Limited,

4 5766

Buchholz relay is used ………. a) protection T/F b) oil T/F c) Air core T/F

Engineers India Limited,

8 14450

Resistor switching is used in which type Circuit Breaker ? a) oil filled CB b) Air blast CB c) Gas filled CB

Engineers India Limited, wbsedcl,

11 29380

In EHV tranm. The conductors are …….. a) Cu roads b) Cu bars with Si c) Cu tube with Si plate

Engineers India Limited,

2 4951

the max. power will be transferred if …… a) sending end vol. is high b) receiving end v is high c)…….. d) corona loss is least

Engineers India Limited,

2 4791

Moving Iron instruments are applicable with a) DC only b) AC only c) DC & AC

Bhel, Engineers India, Engineers India Limited,

14 15997

. The string effcy in AC sys is 80% Then for same power, the string effcy in dc sys is a) less than 80% b) 80% c) more than 80% d) zero

Engineers India Limited,

1 2280

The temperature rise in the sys, which leads to ….. a) Increases stress& length b) increases stress but decreases length c) Decreases stress & increase length d) decrease stress & length

Engineers India Limited,

1 3266

According to underground cables a) stress b/w sheath & conductor is high b) inrush of core & conductor

CDS, Engineers India Limited, TNQ,

1626


Post New Electrical Engineering Questions

Un-Answered Questions { Electrical Engineering }

does a DG set has low fault level as compared to that of a transformer.If yes then why.

1660


If a current -8+6sin6t is flowing three ammeter, one is a centre zero PMMC meter, one is true rms meter and one is moving iron meter. What are the reading of these three meter respectively?

1808


WHY BLADE & JOW OF ISOLETOR IN SUBSTATION?

4214


What is the general system requirement of alternator?

1486


we have 2.2kw,Y,3000rpm motor but 6leads found in TB what happen if we connect in delta?

1461






All tape of electrical questions Answers tape of motor transformer e.o.t crane

2237


Define ampere

873


A cable with concentric PE conductor must be used with frequency converter circuits what does its means.?

1236


how to calculation increase power factor for single phase

1938


primery try cell?

1734


What is ferro-resonance in electrical system? Why it occurs and what are measures to prevent it?

1896


how to build a network which step down 415v to 1v rms

1595


Please tell me the power flow from pmg to main rotor of an alternator (Including AVR unit)?

1697


In all analog voltmeters or ammeter showing some small size symbols. as well as a star and in star 2no. digit, resister symbol,and other. what is that's meaning ?

1728


how many joint can done in HT line and what is life of the joint

1861