Initially, an AC induction motor is operating with the following steady-state conditions:
Motor current = 25 amps
Average stator winding temperature = 140°F
Ambient temperature = 90°F
Assume the stator winding electrical resistance, motor heat transfer properties, and ambient temperature do not change.
If a change in motor load causes the motor current to increase to 50 amps, which one of the following will be the new steady-state average stator winding temperature?
A. 190°F
B. 200°F
C. 280°F
D. 290°F
Show Answer
Answer: D
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