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Electricity level 3 section 9 Exam Questions
And Answers 100% Guaranteed Pass.
Which of the following is true concerning the starting current of an induction motor at the
moment the circuit is energized? - 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 - Answer✔horsepower rating
The requirements for torque motors, shaded-pole motors, permanent split capacitor motors, and
AC adjustable-voltage motors can be found in - Answer✔NEC section 430
If a motor has a current draw of 20A at 240V, what will the amperage be if 480V is applied? -
Answer✔10A
Which of the following lists the full-load currents for three-phase motors with a known winding
type, horsepower, and voltage? - Answer✔NEC Table 430.250
If a 480V, three-phase motor control center feeds a 50hp motor (65A), a 40hp motor (52A), and
a 10hp motor (14A), the minimum feedee ampacity is - Answer✔147.25A
If the total resistance of two motor windings connected in parallel is 20ohms and 240V is applied
to the circuit, how much current will flow? - Answer✔12A
The maximum recommended size of a dual-element, time-delay fuse for a 50hp, 460V, three-
phase motor rated at 65 FLA is - Answer✔125A
One of the three factors that will cause a three-phase motor's magnetic field to rotate is that the -
Answer✔stator windings around the inside of the motor are arranged in a specific manner to
induce rotation
The synchronous speed of an induction motor is determined by the number of stator poles and
the - Answer✔Frequency in hertz
When used for short circuit protection of motor branch circuits, which of the following must be
adjustable and used in conjunction with combination motor starters? - Answer✔Instantaneous
trip circuit breakers
Which of the following describes MSCPs? - Answer✔Fuse-like devices designed for use only in
a special type of fusible-switch combination motor starter
1|Page
Electricity level 3 section 9 Exam Questions
And Answers 100% Guaranteed Pass.
Which of the following is true concerning the starting current of an induction motor at the
moment the circuit is energized? - 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 - Answer✔horsepower rating
The requirements for torque motors, shaded-pole motors, permanent split capacitor motors, and
AC adjustable-voltage motors can be found in - Answer✔NEC section 430
If a motor has a current draw of 20A at 240V, what will the amperage be if 480V is applied? -
Answer✔10A
Which of the following lists the full-load currents for three-phase motors with a known winding
type, horsepower, and voltage? - Answer✔NEC Table 430.250
If a 480V, three-phase motor control center feeds a 50hp motor (65A), a 40hp motor (52A), and
a 10hp motor (14A), the minimum feedee ampacity is - Answer✔147.25A
If the total resistance of two motor windings connected in parallel is 20ohms and 240V is applied
to the circuit, how much current will flow? - Answer✔12A
The maximum recommended size of a dual-element, time-delay fuse for a 50hp, 460V, three-
phase motor rated at 65 FLA is - Answer✔125A
One of the three factors that will cause a three-phase motor's magnetic field to rotate is that the -
Answer✔stator windings around the inside of the motor are arranged in a specific manner to
induce rotation
The synchronous speed of an induction motor is determined by the number of stator poles and
the - Answer✔Frequency in hertz
When used for short circuit protection of motor branch circuits, which of the following must be
adjustable and used in conjunction with combination motor starters? - Answer✔Instantaneous
trip circuit breakers
Which of the following describes MSCPs? - Answer✔Fuse-like devices designed for use only in
a special type of fusible-switch combination motor starter
1|Page
