Category: Rectifiers and Converters

A. Mechanical rectifiers
B. Copper oxide rectifiers
C. Selenium rectifiers
D. Electrolytic rectifiers
E. Mercury arc rectifiers

A. 5.4 V
B. 8.4 V
C. 10.4 V
D. 16.4 V

A. low power factor
B. high power factor
C. zero power factor
D. none of the above

A. one armature and one field
B. two armatures and one field
C. one armature and two fields
D. none of the above

A. graphite
B. boron carbide
C. aluminium
D. copper

A. 100 A at 100 V
B. 200 A at 200 V
C. 300 A at 300 V
D. 400 A at 400 V
E. 500 A at 500 V

A. the rectifier will not operate
B. internal losses will be reduced
C. both ion and electron streams will move in the same direction
D. the rectifier will operate at reduced efficiency

A. self restoring property of mercury
B. high ionization potential
C. energy spent in overcoming the electrostatic field
D. high temperature inside the rectifier