Answer / usha

Active power is nothing but real power.it is defined as productt of
voltage ,current and cosineangle between them.reactive power defined a
d as the product of voltage,current and sine angle between them

Answer / usha

Active power is nothing but real power.it is defined as productt of
voltage ,current and cosineangle between them.reactive power defined a
d as the product of voltage,current and sine angle between them

for a slip ring induction motor if the stator is short circuited and rotor is given supply? how does the rotor rotate?

1 Answers   TNEB Tamil Nadu Electricity Board,

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HOW WE KNOW IN PHYSICALLY THE CONTACT SURFACE OF A VACUUM INTERRUPTER IS GOOD OR GOING TO DAMAGE IN A VCB AFTER ABOVE 500 TIMES OPERATED.

0 Answers   Areva,

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WHY WE ARE EXPRESSING KW-HR AS UNIT OF ELECTRICITY.........?WE CAN EXPRESS IN ANOTHER UNIT.....?

4 Answers   Summit Power,

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Why we use cosine angle for calculating power factor not in sine angle ?

4 Answers  

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what is the VA(Voltampire)? define with calculation?

4 Answers  

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What is the out put of a CT? How the ratio is decided ?

1 Answers  

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How do you protect your appliances from harm in case of neutral failure in a three phase power supply set up.

4 Answers  

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why transformer rating in KVA ?

8 Answers   Bhel, TATA, Voltage,

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how can i get the entrance exam papers

0 Answers  

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what is Wave Trap? And its Function ? Detail? Where it is Used?

7 Answers  

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Motor also having losses, we call KW rating. In transformer and generator having losses but we call KVA Rating why?

9 Answers  

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Pure inductive ckt takes power from AC when 1. Applied voltage and Current increases 2. applied voltage and current decreses 3. voltage decreases and current decreases please justify

2 Answers  

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