Transformers

A. load is balanced only
B. load is unbalanced only
C. on balanced as well as unbalanced loads
D. none of the above

A. load is unbalanced only
B. load is balanced only
C. on balanced as well as unbalanced loads
D. none of the above

A. Mechanical strength
B. Low hysteresis loss
C. High thermal conductivity
D. High permeability

A. 90% load
B. zero load
C. 25% load
D. 50% load

A. average value
B. r.m.s. value
C. maximum value
D. instantaneous value

A. fluctuating load
B. poor insulation
C. mechanical vibrations
D. saturation of core

A. 50°C
B. 80°C
C. 100°C
D. 150°C

A. 6400 W
B. 1600 W
C. 800 W
D. 400 W

A Buchholz relay can be installed on
A. auto-transformers
B. air-cooled transformers
C. welding transformers
D. oil cooled transformers

A. sludge
B. odour
C. gases
D. moisture