18.a. Why are wound-rotor motors successful in controlling the speed of printing-press drives? A. The shared load is large and does not change rapidly. B. The press runs for long periods without...

18.a. Why are wound-rotor motors successful in controlling the speed of printing-press drives?
A. The shared load is large and does not change rapidly.
B. The press runs for long periods without showing the effects of load variations.
C. The operating speed of the press is normally below 700/0 synchronous speed
D. Few steps of rotor resistance are used, which allows for instant acceleration

18.b. A series d-c motor is most likely to be used on a
A. compressor
B. woodworking machine
C. blower.
D. hoist