Interested to Buy Any Domain ? << Click Here >> for more details...
How can calculate the efficency of the rectifier. input
240V AC, current 5 amps,P.F 0.98, Output is 54 V DC,62.6 A.
- 10 Answers
- 27599 Views
- I also Faced
- E-Mail Answers
Answer Posted / stanley electrician
Dear Mr.swapnil,
you have given the formula as P=VI*PF for both
input and output.
You should remember that the pf is not considered in the
DC (output of rectifier).
MY PROBLEM IS, OUTPUT POWER OF THE RECTIFIER IS GREATER
THAN INPUT. SO THE EFFICIENCY IS MORE THAN 100%. But the
efficiency must be with in 100%.
Any way thank you for your answer.
| Is This Answer Correct ? | 5 Yes | 2 No |
Post New Answer View All Answers
A d.c. Shunt motor is found suitable to drive fans because they require?
we are having 15kw and 3kw motor both can run in same time , instead of using copper we are using ug aluminium cable , 35 sq.mm is suitable for its current carrying capacity..?
how do you test tachos and servos
What are the major reasons for balancing hydro-thermal mix?
What is the working principle of CFL & T5 tube light & 40W tube light with electronic ballast?
i am going to correct power factor of 1600kw induction motor,when i calculate capacitance of capacitor it is three time more in star connection than delta. if motor is star connected which connection i shall adopt for capacitors and reason for adopt this connection
if we run a 3 phase machine on two phase what will happend??? given answer with solid reason please
What is the formula to calculate distribution transformer De-rating on iron losses basis
why 1.7Uo for HV cable Hi pot test?IE standard why?
There is any especial requirement for motor to drive through with VFD?
Application Comparison between 22KV (UE)and 33KV (E) system. Are we allowed to use 33KV (E) cable in lieu of 22KV (UE) cable. What are the technical disadvantages.
What type of fittings and electrical accessories can be install in radiation area ?
Why Water motor is not taking a load or pressure while everything is correct. (Note: Motor running properly)
i have install 750 kva distribution transformer at my site and want to do neutral earthing. what calculations should i follow to determine earthing conductor material and size?
whether starting current is limited to rated current of motor through soft starting or it exceeds the rated current?
