Question 1 of 6
Intermediate

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

Question 2 of 6
Intermediate

You can typically increase motor efficiency by 5% by using a permanent magnet synchronous motor instead of an induction motor?

Question 3 of 6
Intermediate

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

Question 4 of 6
Intermediate

Which of the following is the synchronous speed for a four-pole 60Hz induction motor?

Question 5 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. This is the basic principle of which of the following?

Question 6 of 6
Intermediate

An induction motor will operate at synchronous speed at full load?

Question 6 of 6
Intermediate

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1: How far apart are the phase windings (electrical degrees) in a three-phase induction motor?
45 degrees
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1: How far apart are the phase windings (electrical degrees) in a three-phase induction motor?
90 degrees
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1: How far apart are the phase windings (electrical degrees) in a three-phase induction motor?
180 degrees
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1: How far apart are the phase windings (electrical degrees) in a three-phase induction motor?
120 degrees
2: You can typically increase motor efficiency by 5% by using a permanent magnet synchronous motor instead of an induction motor?
True
2: You can typically increase motor efficiency by 5% by using a permanent magnet synchronous motor instead of an induction motor?
False
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3: How can the magnetic field around an electrical conductor be strengthened?
Reduce the voltage
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3: How can the magnetic field around an electrical conductor be strengthened?
Wind it into a coil around an iron core
3: How can the magnetic field around an electrical conductor be strengthened?
Add more poles
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3: How can the magnetic field around an electrical conductor be strengthened?
None of the above
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4: Which of the following is the synchronous speed for a four-pole 60Hz induction motor?
1,200 rpm
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4: Which of the following is the synchronous speed for a four-pole 60Hz induction motor?
1,800 rpm
4: Which of the following is the synchronous speed for a four-pole 60Hz induction motor?
3,000 rpm
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4: Which of the following is the synchronous speed for a four-pole 60Hz induction motor?
3,600 rpm
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5: 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. This is the basic principle of which of the following?
Magnetism
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5: 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. This is the basic principle of which of the following?
Electromagnetism
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5: 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. This is the basic principle of which of the following?
Induction
5: 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. This is the basic principle of which of the following?
Flux density
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6: An induction motor will operate at synchronous speed at full load?
True
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6: An induction motor will operate at synchronous speed at full load?
False