Power transformers are generally designed to have maximum efficiency – McqOptions

MCQOPTIONS

1.	Power transformers are generally designed to have maximum efficiency around
A.	no-load
B.	half-load
C.	near full-load
D.	10% overload
Answer» D. 10% overload

Discussion

No Comment Found

Related MCQs

When does happen from the source to the load?
A transformer is plugged into a 120 V rms source and has a primary current of 300 mA rms. The secondary is providing 18 V across a 10 load. What is the efficiency of the transformer?
What is the turns ratio of the transformer needed to match a 1 k source resistance to a 160 load?
A transformer turns ratio of ________ will be needed to match an output impedance of 5 k to an 8 speaker.
The changes in volume of transformer cooling oil due to variation of atmospheric temperature during day and night is taken care of by which part of transformer
The full-load copper loss of a trans¬former is 1600 W. At half-load, the copper loss willbe
In a step-down transformer, there is a change of 15 A in the load current. This resultsin change of supply current of
In an actual transformer the iron loss remains practically constant from noload tofullload because
The no load current in a transformer lags behind the applied voltage by an angle ofabout
The efficiencies of transformers compared with that of electric motors of the samepower are