Answer / akash

Power Relay is to control AC contactors with no-nc and Reverse Power Relay is used to trip the system when there is any wrong phase is coming. It is usually used in 3phase motors.

Answer / deepak.vin208

Power Relay will operate when the power is more than the set irrespective of the direction where as reverse power relay will operate when the power is transferring the opposite direction...

if installing the transformer why put the sprit the stone ?

1 Answers  

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why the excitation is necessary to produce the reactive power

2 Answers  

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what happen if any one phase of a slipring induction rotor winding is open?is it start or won't?

2 Answers   Aurobindo, Hetero,

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How to perform a DC resistance test In Alternator and their proceduces?

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How to calculate of maximum demand if given 628kw, 785kva, 0.8 p.f.

0 Answers  

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IN CONTROL SYSTEMS Y WE NEED TO KNOW THE STABILITY OF THE SYSTEM?WHAT IS ITS PRACTICAL USE?

2 Answers  

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explain Xmer

2 Answers  

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v/f drive basic princeple

0 Answers  

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Explain the Term in CT Name Plate – Class: 5P10

6 Answers  

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If load is 240 kw & pf is 0.8 lagging, than how to increase it from0.8 to 1.0(unit),which rating capacitor used, please give me Calculation. What is effact of consumer & suplier if pf is lagging or leading with on effect machines/ TF/GE etc.

6 Answers   L&T,

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why the efficiency of generator is more than the motor in case of swinburne's test????

1 Answers  

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I am getting diesel genset 62 kv for my house In addition there are 6 meters of 11kv for the house Lift also being installed for house plot sise 200sq yds total 4 + 2 foloors I want to know how much earthing required how deep it should be

2 Answers  

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