Electricity level 3 section 9 Exam Questions
And Answers
Which of the following is true concerning the starting current of an
induction motor at the moment the circuit is energized? -
correct answer ✅The current rises rapidly.
To calculate the maximum safe load that a motor may be expected
to carry continuously at its rated voltage and frequency, the service
factor is multiplied by the -
correct answer ✅horsepower rating
The requirements for torque motors, shaded-pole motors,
permanent split capacitor motors, and AC adjustable-voltage
motors can be found in -
correct answer ✅NEC section 430
If a motor has a current draw of 20A at 240V, what will the
amperage be if 480V is applied? -
correct answer ✅10A
Which of the following lists the full-load currents for three-phase
motors with a known winding type, horsepower, and voltage? -
correct answer ✅NEC Table 430.250
And Answers
Which of the following is true concerning the starting current of an
induction motor at the moment the circuit is energized? -
correct answer ✅The current rises rapidly.
To calculate the maximum safe load that a motor may be expected
to carry continuously at its rated voltage and frequency, the service
factor is multiplied by the -
correct answer ✅horsepower rating
The requirements for torque motors, shaded-pole motors,
permanent split capacitor motors, and AC adjustable-voltage
motors can be found in -
correct answer ✅NEC section 430
If a motor has a current draw of 20A at 240V, what will the
amperage be if 480V is applied? -
correct answer ✅10A
Which of the following lists the full-load currents for three-phase
motors with a known winding type, horsepower, and voltage? -
correct answer ✅NEC Table 430.250
