23.a. What type of squirrel-cage motor is ordinarily used with small air compressors equipped with a relief valve? A. Design B motor B. Design C motor C. Design A motor D. Design D motor 23.b. The...

23.a. What type of squirrel-cage motor is ordinarily used with small air compressors equipped with a relief
valve?
A. Design B motor
B. Design C motor
C. Design A motor
D. Design D motor
23.b. The most economical voltage for a 150-hp a-c motor is
A. 440 volts.
B. 800 volts.
C. 600 volts.
D. 220 volts.