Answer / gunasekaran

if it is 3 phase motor it may be magnetosrictions.
if it is single phase motor torque is pulsating nature so
noise is comming

Answer / k.prakashchandra

If it is inside the starter , check for hold coil( 0 volt) and its accessories

Answer / felixraj

due to manetostriction

what the different types of cables used for 11kv and 33kv over head work and what is the size of cable in sqmm.

2 Answers   Ordnance Factories Board,

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how to increase or decrease speed in DC shunt motor by DC convertor

0 Answers  

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Ns=120f/p. what is 120?

10 Answers   IAR, L&T, Ramada, Toshiba,

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power is the product of voltage and current.so we can measure the value of power just by using ammeter and voltmeter.......then why do we use a wattmeter?

5 Answers  

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I have 2 Nos of 2500kVA 33/0.415V cast resin transformers. How to decide on ampere rating of HT Panel? Also advise me how many panel RMG i have to consider whether 4 panel ok?

1 Answers  

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What is UJT PNP, NPN transistor & working principles?

1 Answers   TATA,

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how do you test tachos and servos

0 Answers  

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why is a avtomatic voltage regulator used for?

5 Answers  

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What is electrical charger?

3 Answers   HCL,

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Fire pumps are not used with ELCB control, why ?

4 Answers  

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What loads the lagging and leading effects comes in a circuit?

5 Answers  

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What is the function of semicon in 33kv ht cable ?

4 Answers   Denson, Finolex,

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