Question 1 of 6
Intermediate

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

Question 2 of 6
Intermediate

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

Question 3 of 6
Intermediate

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

Question 4 of 6
Intermediate

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

Question 5 of 6
Intermediate

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

Question 6 of 6
Intermediate

A magnetic field is created around an electrical conductor when an electric current is passed through it. This is known as what?

Question 6 of 6
Intermediate

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1: Which of the following is the synchronous speed for a four-pole 60Hz induction motor?
1,200 rpm
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1: Which of the following is the synchronous speed for a four-pole 60Hz induction motor?
1,800 rpm
1: Which of the following is the synchronous speed for a four-pole 60Hz induction motor?
3,000 rpm
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1: Which of the following is the synchronous speed for a four-pole 60Hz induction motor?
3,600 rpm
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2: How can the magnetic field around an electrical conductor be strengthened?
Reduce the voltage
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2: How can the magnetic field around an electrical conductor be strengthened?
Wind it into a coil around an iron core
2: How can the magnetic field around an electrical conductor be strengthened?
Add more poles
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2: How can the magnetic field around an electrical conductor be strengthened?
None of the above
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3: You can typically increase motor efficiency by 5% by using a permanent magnet synchronous motor instead of an induction motor?
True
3: 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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4: Permanent magnet synchronous motors are more efficient than induction motors due to a change in which major motor component?
Stator
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4: Permanent magnet synchronous motors are more efficient than induction motors due to a change in which major motor component?
Rotor
4: Permanent magnet synchronous motors are more efficient than induction motors due to a change in which major motor component?
Bearings
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4: Permanent magnet synchronous motors are more efficient than induction motors due to a change in which major motor component?
Fan
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5: The slip in an induction motor is greater at no load than it is at full load?
True
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5: The slip in an induction motor is greater at no load than it is at full load?
False
6: A magnetic field is created around an electrical conductor when an electric current is passed through it. This is known as what?
Magnetism
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6: A magnetic field is created around an electrical conductor when an electric current is passed through it. This is known as what?
Resistance
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6: A magnetic field is created around an electrical conductor when an electric current is passed through it. This is known as what?
Electromagnetism
6: A magnetic field is created around an electrical conductor when an electric current is passed through it. This is known as what?
Opposites attract
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