6 questions Basic

### 14 - Motors and motor protection

This course test contains 6 questions and can be retaken at any time.

You must answer all questions correctly to pass the test and complete the course.

Question 1 of 6 Basic

Which of the following causes slow temperature increase in the motor winding?

Question 2 of 6 Basic

Fill in the blank with the correct answer. Fitting protective devices in motors will help avoid [xxxxxxx].

Question 3 of 6 Basic

Which of the following statements is true about power consumed and the amount charged?

Question 4 of 6 Basic

Which formula will you use to calculate motor efficiency if the motor size is listed in hp?

Question 5 of 6 Basic

Which of the following things does a built-in protection device normally sense and protect against:

Question 6 of 6 Basic

Identify the parameters that a motor protection device monitors.

Question 6 of 6 Basic

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Q: Which of the following causes slow temperature increase in the motor winding?
A: Frequent starts with high inertia load
Q: Which of the following causes slow temperature increase in the motor winding?
A: Low viscosity of the pumping liquid
01: Frequent starts with high inertia load
03: Locked rotor
Q: Which of the following causes slow temperature increase in the motor winding?
A: Locked rotor
01: Frequent starts with high inertia load
02: Low viscosity of the pumping liquid
Q: Fill in the blank with the correct answer. Fitting protective devices in motors will help avoid [xxxxxxx].
A: Unexpected breakdown
Q: Fill in the blank with the correct answer. Fitting protective devices in motors will help avoid [xxxxxxx].
A: Sudden increase or decrease in temperature
01: Unexpected breakdown
03: Frequency variation
Q: Fill in the blank with the correct answer. Fitting protective devices in motors will help avoid [xxxxxxx].
A: Frequency variation
01: Unexpected breakdown
02: Sudden increase or decrease in temperature
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 less than the power consumed by the motor in all instances.
01: The amount of power that the power company charges is less than the power consumed by the motor in all instances. Your answer
02: The amount of power that the power company charges is equal to the power consumed by the motor in all instances.
03: The amount of power that the power company charges is greater than the power consumed by the motor in instances.
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: 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 greater than the power consumed by the motor in instances.
01: The amount of power that the power company charges is less than the power consumed by the motor in all instances.
02: The amount of power that the power company charges is equal to the power consumed by the motor in all instances.
03: The amount of power that the power company charges is greater than the power consumed by the motor in instances. Your answer
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 formula will you use to calculate motor efficiency if the motor size is listed in hp?
A: ( P1 × 0.746/P2) ×100 %
01: (P2× 0.746/P1) × 100%
03: ( P3 ×0.746/P2 ) ×100 %
Q: Which formula will you use to calculate motor efficiency if the motor size is listed in hp?
A: ( P3 ×0.746/P2 ) ×100 %
01: (P2× 0.746/P1) × 100%
02: ( P1 × 0.746/P2) ×100 %
Q: Which of the following things does a built-in protection device normally sense and protect against:
A: Temperature
Q: Which of the following things does a built-in protection device normally sense and protect against:
A: Cos ϕ
01: Temperature
03: Voltage
Q: Which of the following things does a built-in protection device normally sense and protect against:
A: Voltage
01: Temperature
02: Cos ϕ