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

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 3 of 6
Intermediate

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

Question 4 of 6
Intermediate

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

Question 5 of 6
Intermediate

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

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: 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
2: 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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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: The slip in an induction motor is greater at no load than it is at full load?
True
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4: The slip in an induction motor is greater at no load than it is at full load?
False
5: Which of the following is the synchronous speed for a four-pole 60Hz induction motor?
1,200 rpm
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5: Which of the following is the synchronous speed for a four-pole 60Hz induction motor?
1,800 rpm
5: Which of the following is the synchronous speed for a four-pole 60Hz induction motor?
3,000 rpm
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5: Which of the following is the synchronous speed for a four-pole 60Hz induction motor?
3,600 rpm
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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