Answer / prashant

the cables used in transmission lines are of higher rating
as compared to communication line. if ever they were same
then the distortion in communication due to the harmonics
would also increase. henceforth for better communication and
better transmission these lines have different ratings.

Answer / gunasekaran

power rating is more in transmission line like KVA or MVA
communication line power rating in mVA

why is used for starters for staring motors?

6 Answers   Amrapali, L&T,

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if two transformers are parallel & both have fault short ckt. impedance of 50KA in each case will it increase or decrease show example?

1 Answers  

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how will we calculate the copper wire load..

0 Answers  

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1.Why we use choke?If we use for high starting voltage then different type choke gives different voltage. Is it correct?

2 Answers   Dalkia, Luminous,

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Tell the details of the precommissioning tests that are performed on distribution transformer, power cable and switchgear (11kv).

1 Answers   Reliance,

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what is the function of generator exciter

11 Answers   NTPC,

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why we dont store the ac power in battery?

1 Answers   TCS,

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What is difference between ball screw and lead screw.

2 Answers  

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Which motor connection is preferable star-delta or delta-star?

0 Answers   IOCL,

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The coils having selfinductancs 10mh and15mh,effective inductance 40mh when connected in series aiding. what will be the equivalent inductance if we connect them in series opposing?

1 Answers   BSNL,

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Why is the air gap between the pole pieces and the armature kept very small?

0 Answers  

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Why r used of cable 50sq.mm and above size cable in 3.5 core. And below size in 4 core ? any technical reason please explain it

2 Answers  

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