How can the magnetic field around an electrical conductor be strengthened?
You can typically increase motor efficiency by 5% by using a permanent magnet synchronous motor instead of an induction motor?
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?
How far apart are the phase windings (electrical degrees) in a three-phase induction motor?
Which of the following is the synchronous speed for a four-pole 60Hz induction motor?
Test results
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Q: How can the magnetic field around an electrical conductor be strengthened?
A: Reduce the voltage
Q: How can the magnetic field around an electrical conductor be strengthened?
A: Wind it into a coil around an iron core
Q: How can the magnetic field around an electrical conductor be strengthened?
A: Add more poles
Q: How can the magnetic field around an electrical conductor be strengthened?
A: None of the above
Q: You can typically increase motor efficiency by 5% by using a permanent magnet synchronous motor instead of an induction motor?
A: True
Q: You can typically increase motor efficiency by 5% by using a permanent magnet synchronous motor instead of an induction motor?
A: False
Q: 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?
A: 1,800 rpm
Q: 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?
A: 3,000 rpm
Q: 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?
A: 3,500 rpm.
Q: 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?
A: None of the above
Q: How far apart are the phase windings (electrical degrees) in a three-phase induction motor?
A: 45 degrees
Q: How far apart are the phase windings (electrical degrees) in a three-phase induction motor?
A: 90 degrees
Q: How far apart are the phase windings (electrical degrees) in a three-phase induction motor?
A: 180 degrees
Q: How far apart are the phase windings (electrical degrees) in a three-phase induction motor?
A: 120 degrees
Q: Which of the following is the synchronous speed for a four-pole 60Hz induction motor?
A: 1,200 rpm
Q: Which of the following is the synchronous speed for a four-pole 60Hz induction motor?
A: 1,800 rpm
Q: Which of the following is the synchronous speed for a four-pole 60Hz induction motor?
A: 3,000 rpm
Q: Which of the following is the synchronous speed for a four-pole 60Hz induction motor?
A: 3,600 rpm
Q: The stator magnetic field in a single-phase motor does not rotate?
A: True
Q: The stator magnetic field in a single-phase motor does not rotate?
A: False