Interview Questions Answers in Electrical Engineering

Question { TATA, 17007 }

draw single line diagram of UPS

Answer

(a.c) supply converter to (d.c) to battery and converter to
ups ac supply outgoing..

Is This Answer Correct ?

54 Yes

7 No

Question { 5166 }

why voltages are added when batteries are connected in series?

Answer

connecting in battery r series voltage value increase...

Is This Answer Correct ?

0 Yes

0 No

Question { Torrent Power, 7509 }

what is the RMU and RMU system in sub-station(11kv,66kv.....)

Answer

RMU- Ring main unit... this one is switching devices...

Is This Answer Correct ?

1 Yes

0 No

Question { Indiabulls, 18080 }

In a Tap changing transformer where is the tap connected ,
is it connected in the primary side or it is connected in
secondary side

Answer

tap connecting in primary side only... secondary side curren valur r high if i do same winding damage...

Is This Answer Correct ?

0 Yes

0 No

Question { Emco, 7374 }

why starter use to on a motor

Answer

reduceing for starting current....

Is This Answer Correct ?

0 Yes

0 No

Question { 6344 }

what is difference between fuse and circuit breaker?

Answer

1)circuit breaker r circuit productiion 2) fuse r circuit protective.....

Is This Answer Correct ?

0 Yes

0 No

Question { Bhel, 5079 }

what is defference by mcb,mccb and mpcb

Answer

difference between for breaker breaking capacity only...( shor circuit curent value only diference)

Is This Answer Correct ?

0 Yes

0 No

Question { Bhel, 5079 }

what is defference by mcb,mccb and mpcb

Answer

Mcb & mccb difference are that breakers breaking capacity only... mcb is 10 KA and mccb is 30 KA...

Is This Answer Correct ?

1 Yes

0 No

Question { JSW, 8664 }

how to test a motor from megger

Answer

motor value check from.... body to phase Then winding to winding phase came infinite using megger 1 kv r 500(dc volt megger came ohm value...

Is This Answer Correct ?

10 Yes

2 No

Question { 4838 }

what is difference between vaccum circuit breaker and air
circuit breaker?

Answer

mr. rameez ajmeri thanks for ur advaise...well ur knowledge of electrical. i salute that! dont need un necessary word right... this one public web site ok mind it... kekkura kelvikku answer mattum sonna pothum theva illama pesatha... do u know? all electrical kind of things? r u geniuss in electrical department?

Is This Answer Correct ?

2 Yes

0 No

Question { 6399 }

how many ampere Maxmium load given on a 10 kva DG set?

Answer

maximum load given to 13.9 amp....

Is This Answer Correct ?

6 Yes

0 No

Question { L&T, 6019 }

how to find out this one mcb r mccb?

Answer

must u see breaker, braking capacity 10KA breakers are mcb 35KA breakers are mccb... u find that way

Is This Answer Correct ?

0 Yes

0 No

Question { 3431 }

What is meaning of DRU in gen.of AVR.

Answer

avr meana auto voltaga regulator... i know this one....

Is This Answer Correct ?

1 Yes

0 No

Question { 4160 }

Dear sir,how should i set the relay in star delta starter..say
ex i am having 4ohp motor,,wht should be the relay setting...?

Answer

1/root3*motor rated amps.... star delta starter,....

Is This Answer Correct ?

0 Yes

0 No

Question { Honda, 7738 }

which motor is used in high mast ( street light) & give the
hight of tower .

Answer

slip ring induction motor used must torque...

Is This Answer Correct ?

1 Yes

0 No

gangatharan