1
Fill in the blank with the correct answer. Fitting protective devices in motors will help avoid [xxxxxxx].
2
Which formula will you use to calculate motor efficiency if the motor size is listed in hp?
3
Which of the following things does a built-in protection device normally sense and protect against:
4
Which of the following statements is true about pump protection devices?
5
Identify the parameters that a motor protection device monitors.
6
Which of the following causes slow temperature increase in the motor winding?
Test results
Congratulations. You have passed the test and completed the Motors and motor protection
Achieved badges:
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
Q: Fill in the blank with the correct answer. Fitting protective devices in motors will help avoid [xxxxxxx].
A: Frequency variation
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 %
Q: Which formula will you use to calculate motor efficiency if the motor size is listed in hp?
A: ( P3 ×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
Q: Which of the following things does a built-in protection device normally sense and protect against:
A: Voltage
Q: Which of the following statements is true about pump protection devices?
A: Motor protection offers monitoring of the motor and protection.
Q: Which of the following statements is true about pump protection devices?
A: Motor protection offers only protection.
Q: Which of the following statements is true about pump protection devices?
A: Motor protection offers only monitoring for identifying probable risks.
Q: Identify the parameters that a motor protection device monitors.
A: Power consumption
Q: Identify the parameters that a motor protection device monitors.
A: Output
Q: Identify the parameters that a motor protection device monitors.
A: Viscosity of the pumping liquid
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
Q: Which of the following causes slow temperature increase in the motor winding?
A: Locked rotor