A. separately excited generator
B. shunt generator
C. series generator
D. compound generator
A. increasing its field resistance
B. decreasing its field resistance
C. increasing its speed
D. decreasing its speed
A. Shunt generators
B. Series generators
C. Compound generators
D. None of the above
A. The direction of that generator is reversed
B. The speed of that generator is increased
C. The field of that generator is weakened
D. That generator takes large of loads
A. multiplication of front and back pitches
B. division of front pitch by back pitch
C. sum of front and back pitches
D. difference of front and back pitches
A. imperfect brush contact
B. field resistance less than the critical resistance
C. no residual magnetism in the generator
D. faulty shunt connections tending to reduce the residual magnetism
A. 2 : 3
B. 3 : 1
C. 3 : 2
D. 1 : 3