Interview Questions Answers in Electrical Engineering

Questions / { sanjeet swarnakar }

Questions Answers Category Views Company eMail

IN bateery size of positive is biger than negative .why?

Power Grid,

8 Electrical Engineering 9909

what happen when ac motor is connected with dc current

4 Electrical Engineering 6870

like the transformer another electrical static device which operate on same priencipal?

Power Grid, Vishal Transformers,

13 Electrical Engineering 15646

why rating of motor in HP

MSL,

2 Electrical Engineering 5316

Answers / { sanjeet swarnakar }

Question { KESC, 57237 }

Do you know how to joint the H.T and L.T Cables?

Answer

HT line tuns into LT by step down txr then connected lt
with LT cable

Is This Answer Correct ?

24 Yes

12 No

Question { L&T, 133586 }

Why a starter is used for a motor?

Answer

to limit the starting current ,because the resistance of
armature is very less so starting current becomes four to
five times . so to save the motor starter is used

Is This Answer Correct ?

1 Yes

2 No

Question { 80884 }

what are the types of transformers

Answer

step up transformer
step down transformer
auto transformer

Is This Answer Correct ?

20 Yes

16 No

Question { 19226 }

What is mean by diversity Fator?

Answer

It is the ratio of sumation of maximum demand of different
power spply system to maxim demand of the system

Is This Answer Correct ?

25 Yes

1 No

Question { RRB, 16159 }

Which is capital of Indian State Tripura ?

Answer

agartala

Is This Answer Correct ?

10 Yes

0 No

Question { 17849 }

can we step up dc power using transformer?

Answer

Is This Answer Correct ?

1 Yes

0 No

Question { 11774 }

What is the result of under frequency to the system.

Answer

losses increases ,voltage regulation disturb ,motor run
with lower speed

Is This Answer Correct ?

9 Yes

1 No

Question { Maytas, 49510 }

What is the reason for low voltage in houses?

Answer

due to inductive load
power factor decrease

so voltage regulation is required to make up the loss of
voltage

please tell me ur email ID
my email ID is sanjeet.swarnakar@gmail.com

Is This Answer Correct ?

13 Yes

10 No

Question { 35569 }

What is the meaning of GRID?

Answer

grid means national interconnection of power supply with
all the states

please tell me ur email ID
my email ID is sanjeet.swarnakar@gmail.com

Is This Answer Correct ?

9 Yes

10 No

Question { 26276 }

what is the maximum genarating voltage in india?

Answer

11 kv

Is This Answer Correct ?

14 Yes

12 No

Question { 14472 }

What is the basic diffrence between Electronics &
Electrical engineering

Answer

electrical machine operate at high voltage using conductor
but electonics is deals with semiconductor materials at
lower voltages

Is This Answer Correct ?

5 Yes

2 No

Question { Manhattan, 13297 }

Do you know how to measure the earth resistance?

Answer

earth resitanse is also measured by meggar

Is This Answer Correct ?

5 Yes

18 No

Question { 6408 }

Upto what extent, the lagging power factor can be improved
with the help of capacitors?

Answer

0.8 to 0.9

Is This Answer Correct ?

1 Yes

2 No

Question { NTPC, 8390 }

At what distance power transformer can be placed from
generating ?

Answer

less than 10 meter

Is This Answer Correct ?

0 Yes

3 No

Question { HP, 60286 }

what are the affects of loose connection in electrical
circuit.

Answer

sparking will occur
short circuit may occur
single phasing may occur
electrecal instrument may distroy

Is This Answer Correct ?

23 Yes

4 No