D.C. Generators

A. Shunt generators
B. Series generators
C. Compound generators
D. None of the above

A. Self-excited generator
B. Separately excited generator
C. Level compounded generator
D. All of the above

A. reverse the field connections
B. increase the field resistance
C. increase the speed of primemover
D. check armature insulation resistance

A. their rising voltage characteristics
B. unequal number of turns in their series field windings
C. unequal speed regulation of their primemovers
D. unequal series field resistances

A. to increase the speed and hence generated e.m.f.
B. to increase the series flux
C. so that two similar machines will pass approximately equal currents to the load
D. to reduce the combined effect of ar-mature reaction of both machines

A. rising voltage characteristics
B. identical voltage characteristics
C. drooping voltage characteristics
D. linear voltage characteristics

A. 40 percent
B. 25 percent
C. 10 percent
D. 5 percent

A. field
B. brushes
C. armature
D. load

A. external current
B. armature current
C. shunt current
D. load current

A. is always present
B. is always absent
C. may be sometimes present
D. none of the above