At a permanent magnet motor's no-load speed, the motor torque is
A. negative
B. very small since the connected load is resisting with a large torque and the shaft is not turning
C. so large that the motor comes to a stop
D. maximum
E. zero
Answer: E
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A. polycoating material B. non-flammable paint C. nonincendive wiring D. damping technique
One method of elevating system liquid pressure is to:
A) Control the vibration of the condenser fan motors. B) Control the pressure of the condenser fan motors. C) Control the operation of the condenser fan motors. D) Control the temperature of the condenser fan motors.
The least effective preventive measure for overcoming potential pressure hazards is proper design.