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

Which of the following single-phase motors offers the lowest starting torque?

Question 3 of 6
Intermediate

When power is applied to the stator, an expanding magnetic field is created that cuts across the rotor conductor bars and induces current in the rotor.

Question 4 of 6
Intermediate

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

Question 5 of 6
Intermediate

How can the magnetic field around an electrical conductor be strengthened?

Question 6 of 6
Intermediate

Which of the following electrical devices is most commonly used to start a single-phase 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: Which of the following single-phase motors offers the lowest starting torque?
Capacitor start/Induction run (CSIR)
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2: Which of the following single-phase motors offers the lowest starting torque?
Capacitor start/Capacitor run (CSCR)
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2: Which of the following single-phase motors offers the lowest starting torque?
Resistance start/Induction run (RSIR)
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2: Which of the following single-phase motors offers the lowest starting torque?
Permanent-split capacitor (PSC)
3: When power is applied to the stator, an expanding magnetic field is created that cuts across the rotor conductor bars and induces current in the rotor.
True
3: When power is applied to the stator, an expanding magnetic field is created that cuts across the rotor conductor bars and induces current in the rotor.
False
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4: The stator magnetic field in a single-phase motor does not rotate?
True
4: The stator magnetic field in a single-phase motor does not rotate?
False
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5: How can the magnetic field around an electrical conductor be strengthened?
Reduce the voltage
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5: How can the magnetic field around an electrical conductor be strengthened?
Wind it into a coil around an iron core
5: How can the magnetic field around an electrical conductor be strengthened?
Add more poles
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5: How can the magnetic field around an electrical conductor be strengthened?
None of the above
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6: Which of the following electrical devices is most commonly used to start a single-phase motor?
Resistor
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6: Which of the following electrical devices is most commonly used to start a single-phase motor?
Switch
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6: Which of the following electrical devices is most commonly used to start a single-phase motor?
Thermostat
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6: Which of the following electrical devices is most commonly used to start a single-phase motor?
Capacitor