For derries and winches which of the following drives can be used ?
A. Pole changing squirrel cage motors
B. D.C. motors with Ward-leonard con-trol
C. A.C. slip ring motors with variable resistance
D. Any of the above
Answer:D
For derries and winches which of the following drives can be used ?
A. Pole changing squirrel cage motors B. D.C. motors with Ward-leonard con-trol C. A.C. slip ring motors with variable resistance D. Any of the above