I am glad to hear that!

why...........??

 

reply..................

 

what is the unit of generator & motor

Oh, was that a question? Even then it makes no sense.

 

Is generator unit is Watt or KVA and in motor Horse power?? i have doubt??

as in transformer it VA.

 

They are related through mathematics.
746 VA = 746 Watts = 1 Horsepower

Horsepower usually is related to some kind of motion.

 

Backup power generators usually are rated in WATTS, and auto ALTERNATORS are usually rated in AMPS

 

They are related through mathematics.
746 VA = 746 Watts = 1 Horsepower

Horsepower usually is related to some kind of motion.

That mean a motor will be know by it horse power.

Backup power generators usually are rated in WATTS, and auto ALTERNATORS are usually rated in AMPS

Why, they are in watts , why not in VA??

 

Quote:
They are related through mathematics.
746 VA = 746 Watts = 1 Horsepower

Horsepower usually is related to some kind of motion.
That mean a motor will be know by it horse power.
Yes, generally, but there are always exceptions. Some are rated for torque and speed as in many servo motor applications, BUT, if you know max torque and max speed, math will give horse power.


Quote:
Backup power generators usually are rated in WATTS, and auto ALTERNATORS are usually rated in AMPS
Why, they are in watts , why not in VA??
Residential power consumption is termed in Watts or Kilowatts. Automotive (most alternators are in cars, but not always) usage in in Amps since the main loads are rated in amp load and how fast it can put a charge back into a battery.
Again, since they are all mathematically related, it only makes a difference if you want it to make a difference. If you know any two terms, the third term is easily found.

 

The synchronous alternator are also used for power factor correction, for this they are connected in // only or in series

 

Hi again,

The rating of induction motor is given as 25HP, the mechanical power loss is 1000Watt, in my course book, to find cu losses

The formula is Pcu = (Slip)S /(1-S)*(P mechanical + mechanical developed)

I want to know the rating that is 25HP is of what total electrical or mechanical power to rotor??

What the need of adding mechanical developed??

 

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