Question 1 of 6
Intermediate

Permanent magnet synchronous motors are more efficient than induction motors due to a change in which major motor component?

Question 2 of 6
Intermediate

The slip in an induction motor is greater at no load than it is at full load?

Question 3 of 6
Intermediate

In a two-pole induction motor, the stator flux rotates at 3,600 rpm. Which of the following would be a typical rotor speed for this motor?

Question 4 of 6
Intermediate

Which of the following electrical devices is most commonly used to start a single-phase motor?

Question 5 of 6
Intermediate

The stator magnetic field in a single-phase motor does not rotate?

Question 6 of 6
Intermediate

How far apart are the phase windings (electrical degrees) in a three-phase induction motor?

Question 6 of 6
Intermediate

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1: Permanent magnet synchronous motors are more efficient than induction motors due to a change in which major motor component?
Stator
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1: Permanent magnet synchronous motors are more efficient than induction motors due to a change in which major motor component?
Rotor
1: Permanent magnet synchronous motors are more efficient than induction motors due to a change in which major motor component?
Bearings
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1: Permanent magnet synchronous motors are more efficient than induction motors due to a change in which major motor component?
Fan
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2: The slip in an induction motor is greater at no load than it is at full load?
True
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2: The slip in an induction motor is greater at no load than it is at full load?
False
3: In a two-pole induction motor, the stator flux rotates at 3,600 rpm. Which of the following would be a typical rotor speed for this motor?
1,800 rpm
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3: In a two-pole induction motor, the stator flux rotates at 3,600 rpm. Which of the following would be a typical rotor speed for this motor?
3,000 rpm
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3: In a two-pole induction motor, the stator flux rotates at 3,600 rpm. Which of the following would be a typical rotor speed for this motor?
3,500 rpm.
3: In a two-pole induction motor, the stator flux rotates at 3,600 rpm. Which of the following would be a typical rotor speed for this motor?
None of the above
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4: Which of the following electrical devices is most commonly used to start a single-phase motor?
Resistor
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4: Which of the following electrical devices is most commonly used to start a single-phase motor?
Switch
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4: Which of the following electrical devices is most commonly used to start a single-phase motor?
Thermostat
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4: Which of the following electrical devices is most commonly used to start a single-phase motor?
Capacitor
5: The stator magnetic field in a single-phase motor does not rotate?
True
5: The stator magnetic field in a single-phase motor does not rotate?
False
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6: How far apart are the phase windings (electrical degrees) in a three-phase induction motor?
45 degrees
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6: How far apart are the phase windings (electrical degrees) in a three-phase induction motor?
90 degrees
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6: How far apart are the phase windings (electrical degrees) in a three-phase induction motor?
180 degrees
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6: How far apart are the phase windings (electrical degrees) in a three-phase induction motor?
120 degrees