š Key Concepts
ā¢ Rated conditions of an induction motor (horsepower, speed, frequency, voltage)
ā¢ Difference between starting torque, pull-out (breakdown) torque, and full-load torque
ā¢ How torque relates to the motorās normal continuous operating point
š Think About
ā¢ Which choice describes the torque when the motor is running at its normal, nameplate operating point rather than at start or at extreme overload?
ā¢ Look for key words like rated horsepower, rated speed, and rated frequencyāwhich option lines up with a motorās usual running condition?
ā¢ Which options clearly refer to special conditions (startup, acceleration, or heavy overload) instead of normal full-load operation?
ā
Before You Answer
ā¢ Be sure the definition you pick matches normal continuous operation at the nameplate rating of the motor, not a temporary or extreme condition.
ā¢ Eliminate any choice that refers to starting or instant of voltage application, since that is related to starting torque, not full-load torque.
ā¢ Check that the correct choice links torque to rated horsepower, speed, and frequency rather than minimum or maximum torque values.