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. the number of poles
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? Identify and state the historical significance of "witch hunting".
What will be an ideal response?
When rigging a load, the center of gravity must be placed _____.
a. directly above the hook b. directly below the hook c. between the hook and the nearest outrigger d. between the hook and the load destination
The ____ indicates the type of weld to be made.
A. arrow B. weld symbol C. tail D. REFerence line
Which of the following statements is TRUE?
A) The speed of motor will also decrease with decreasing temperature. B) The speed of motor will also increase with decreasing temperature. C) The speed of motor will also increase with increasing temperature. D) The speed of motor will also decrease with increasing temperature.