The speed of a three-phase squirrel cage induction motor is controlled by the frequency of the applied voltage
and _____.
a. voltage dropping resistors
b. the number of poles
c. full-load torque
d. armature current
b
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The horizontal distance of the stairs from end to end is known as the ____.
A. rise B. run C. setback D. tread
A circuit has a peak voltage of 275V. What is the average voltage value?
a. 120V b. 175V c. 190V d. 277V
Irreversibilities might not be introduced in a process by which of the following?
A) Heat transfer across a finite temperature difference B) Expansion C) Friction D) The mixing of two fluids
Technician A says that a two-wire COP system uses the PCM to trigger the coil. Technician B says that a three-wire COP system has an ICM built into the coil assembly. Which technician is correct?
A) Technician A only B) Technician B only C) Both technicians A and B D) Neither technician A nor B