The iron loss in a 100kva transformer is 1 kw and full load
copper losses are 2 kw, then what is maximum efficiency occure
at a load?
Answer Posted / srihari
The load is not given so let us assume the load is resistive load.
therefore power factor is unity and at maximum efficiency copper losses = iron losses = 1kw.
100*10^3*1
efficiency= ------------------- = 98.03%
100*10^3*1+1000+1000
| Is This Answer Correct ? | 2 Yes | 6 No |
Post New Answer View All Answers
which connection is safer series or parallel?usually which connection we prefer at home?
What is the meaning of loop in transformer
oltc of a transformer, how it works? and what are the equipment consist of describe briefly?
In EDO ACBs what is a purpose of closing coil and motor, what is the operation of these devices are they inetconnected. means if we give supply to motor and by BCS we charge Closing coil,what exact is operation is and how it charge a spring of ACB. Sir if anybody has an wiring diagram please send me the link to operate and EDO breaker.
diff b/w normal grounding and resistance grounding
What is float cum boost charging system?
A ray hit a smooth regular surface at an angle of 20 from the normal. Calculate : 1. The angle btw the incident and reflection ray. 2. The angle of deviation.
Dear all, I want to use Induction motor to open and close a 1 ton door. How much power do I need. Thanks
please send me last 5 year interview questions
Define open loop control system.
hi plz send me reliance placement papers..i.e electrical technical papers that have been asked in reliance test.
What is the difference between DOL starter and star delta starter
what is the maximum permissible limit value of leakage current and leakage counter reading to replace lightining arrester?
does a DG set has low fault level as compared to that of a transformer.If yes then why.
Please tell me in DETAIL about the following 3 types of fuses or recommend me a good power system protection book or a website link ? 1.Dropout Fuse 2.Striker Fuse 3.Empulsive fuse (not sure if its impulsive or explosion fuse , sorry)