Category: Rectifiers and Converters

A. straight line
B. curved line
C. exponential
D. none of the above

A. two
B. three
C. four
D. six
E. none

A. d.c. only
B. a.c. only
C. partly a.c. and partly d.c.

A. is directly proportional to load
B. is inversely proportional to load
C. varies exponentially with the load current
D. is almost independent of load current

A. its ionization potential is relatively low
B. its atomic weight is quite high
C. its boiling point and specific heat are low
D. it remains in liquid state at ordi¬nary temperature
E. all of the above

A. voltage only
B. current only
C. voltage and current
D. r.m.s. value of current
E. none of the above

A. by means of a small auxiliary motor
B. from AC. side as induction motor
C. from D.C. side as D.C. motor
D. any of the above methods
E. none of the above methods

A. Telephones
B. Relays
C. Time switches
D. All of the above

A. 10 V
B. 30 V
C. 60 V
D. 100 V
E. 200 V

A. Six-phase
B. Three-phase
C. Two-phase
D. Single-phase