Answer / elecopr

Bcoz Capacitor initially behave as an short circuit in
capacitor current lead voltage by 90 degree,in that way
capacotor split the phase.

When a single pase capacitor run motor- run on 230vac and Case(1)run with 8 Mfd 250 vac.capacitor , Case( 2) run with 8 Mfd 400vac capacitor. What is difference between both case regarding power ,efficiency etc?

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sir , what happen if we decrease ( approx 3 inch ) the lenth of shaft in 110KW Induction , three phase motor. actually a 110KW motor is couppled with star couplling to 120TR compressor. When we doing maintenance in compressor it is required to skid the motor backword and resulting dis- alightnment . so we want to change the tyre coupling in place of existing coupling. so it is required to cut off the rotor aprox 3 inch form driving side.

2 Answers  

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Explain what happens to the speed of a series motor as the load decreases

1 Answers  

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Weather power factor correction needed for synchronous motors?

1 Answers  

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for a machine R=130 KVA Y=132 KVA B=144 KVA Then what will be the total kva

3 Answers   ABB,

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what is protections used for 6.6kv ht motor

2 Answers   OEG,

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what is meant by IGBT how they differ from tyristor ?

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explain about the electrification in the Indian Railways? ie., how the power is taken and used to drive the train? explain with the block diagram??

1 Answers  

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How to identify the start and end of 3phase 12 lead motor if U1, U2, etc numberings are lost or erased.

0 Answers  

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What will happen if we give the 3 phase supply to the rotor of slipring induction motor?

3 Answers  

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Is neutral transformer can be called as control transformer?

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What are reasond for high wattage in single phase induction motors

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