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?
How can the magnetic field around an electrical conductor be strengthened?
Which of the following electrical devices is most commonly used to start a single-phase 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?
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Q: 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?
A: Magnetism
Q: 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?
A: Electromagnetism
Q: 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?
A: Induction
Q: 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?
A: Flux density
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: 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
Q: Which of the following electrical devices is most commonly used to start a single-phase motor?
A: Resistor
Q: Which of the following electrical devices is most commonly used to start a single-phase motor?
A: Switch
Q: Which of the following electrical devices is most commonly used to start a single-phase motor?
A: Thermostat
Q: Which of the following electrical devices is most commonly used to start a single-phase motor?
A: Capacitor
Q: The slip in an induction motor is greater at no load than it is at full load?
A: True
Q: The slip in an induction motor is greater at no load than it is at full load?
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