Transformers

A. copper loss becomes high in proportion to the output
B. iron loss is increased considerably
C. voltage drop both in primary and secondary becomes large
D. secondary output is much less as compared to primary input

A. temperature rise
B. dielectric strength of oil
C. voltage ratio
D. copper loss

A. load changes
B. oil in the transformer
C. magnetostriction
D. mechanical vibrations

A. core
B. windings
C. tank
D. any of the above

A. poor insulation
B. Overload
C. loose connections
D. Core saturation

A. low power factor wattmeter
B. unity power factor wattmeter
C. frequency meter
D. any type of wattmeter

A. Core loss
B. Friction loss
C. Eddy current loss
D. Hysteresis loss

A. capacitive only
B. inductive only
C. inductive or resistive
D. none of the above

A. low voltage side of high kVA transformers
B. high frequency transformers
C. high voltage side of small capacity transformers
D. high voltage side of high kVA rating transformers

A. not change
B. decrease
C. increase
D. any of the above