6 questions Basic


14 - Motors and motor protection

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Q: Which of the following statements is true about pump protection devices?
A: Motor protection offers monitoring of the motor and protection.
Q: Identify the parameters that a motor protection device monitors.
A: Power consumption
Q: Which formula will you use to calculate motor efficiency if the motor size is listed in hp?
A: (P2× 0.746/P1) × 100%
Q: Which of the following statements is true about power consumed and the amount charged?
A: The amount of power that the power company charges is equal to the power consumed by the motor in all instances.
Q: The slots located in the inner diameter of a stator have:
A: Copper wires
Q: Which of the following causes slow temperature increase in the motor winding?
A: Frequent starts with high inertia load