Interview Questions Answers in Electrical Engineering

ajmal gani

{ City } pudukkottai
< Country > india
* Profession * b.e
User No # 37950

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Total Answers Posted # 4

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Questions / { ajmal gani }

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Answers / { ajmal gani }

Question { 11628 }

what is star&delta connections?

Answer

star delat connection means, its need three contactor. one
is star contactor KM11, another two contactor is delta
contactor KM21 & KM31. two contactor need over load O/L21 &
O/L31.

Is This Answer Correct ?

0 Yes

1 No

Question { HSL, 24938 }

What is Transformer?

Answer

transformer has two winding, one is primary winding another
one is secondary winding, secondary winding have less
number of turns compare to primary, In transformer
secondary winding is shorted, in beteween the two winding
core is placed

Is This Answer Correct ?

1 Yes

0 No

Question { 27341 }

Why we use shunt coil in breaker??????????

Answer

1. it will trip the mccb, in case of overload

Is This Answer Correct ?

7 Yes

12 No

Question { L&T, 7117 }

WHAT DO U MEAN BY THERMAL OVER LOAD RELAY& WHERE THEY ARE
BUSED

Answer

1.thermal over load relay used in star delta starter
application
2. according to motor kw we need to provide thermal over
load relay, suppose suppose the motor ampere exceed from
normal one the over load will trip, it must be matching
with motor kw

Is This Answer Correct ?

0 Yes

4 No