How to measure 20 hp motor resitance

1 Answers  

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why hv current transformers have big size ?

5 Answers   RailTel, TCS,

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How to the calculating the Reactive power ( kvar )

3 Answers  

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what is the HT motor current setting (Motor protection relay)aganist FLA If the capacitor is connected in parallal to the motor to increase the P.F from 0.89 to 0.99. the setting is to be reduced. what is the formula for to calculate the current.(FLA - CALCULATED CURRENT!= )

1 Answers  

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Auto transformer starter gives the same effect as star/delta strater if its turn ratio = A 0.5 B 0.67 C o.66 D 0.577

1 Answers  

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What is the maximum advisable distance where it is required to interconnect a 500 KVA 480 V 3 ph transformer and the main panel or MCC ignoring the voltage droop affectation, does it is exist any standard about it?

2 Answers  

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Which is the best protection in case of shortcircut fuses or mccb ?

2 Answers  

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Can step down transformer works as step up one???

2 Answers  

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What are the difference between off-load tap changer and on-load tap changer in transformer?

2 Answers   HCL,

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why we use four type of phase angle difference between pimary & secondry winding of a transformer & where we use them?

0 Answers   Grasim,

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Differentiate between power relay and reverse power relay?

2 Answers   ABB, TVS,

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What are instrument transformers?

6 Answers  

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