To Study the efficiency of single phase transformer by load test.
On which factors transformer routine efficiency depends upon?
Power transformers are designed to have maximum efficiency at?
A transformer having maximum efficiency at 75% full load will have the ratio of iron loss and full load copper loss equal to ___________
What is the correct formula for the efficiency of a transformer?
A transformer will have zero regulation at
The regulation of a two winding transformer is 5% at full load unity power factor. At full load 0.8 power factor lagging the regulation would be:-
A transformer rated for 5kVA, 400V/200V, 50 Hz, has a leakage impedance of referred to HV side. Its voltage regulation at full load will be maximum at a power factor of:
When a transformer is operating at full load with a lagging power factor, how does the core loss(iron loss) and copper loss behave with respect to the load?
The voltage regulation of a transformer having 2% resistance and 5% reactance at full load, 0.8 pf lagging is
If the output of a transformer is 600W whereas the losses are 200W, the efficiency of the transformer will be: