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?
Which of the following electrical devices is most commonly used to start a single-phase motor?
Which of the following is the synchronous speed for a four-pole 60Hz induction motor?
Which of the following single-phase motors offers the lowest starting torque?
A magnetic field is created around an electrical conductor when an electric current is passed through it. This is known as what?
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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: 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: An induction motor will operate at synchronous speed at full load?
A: True
Q: An induction motor will operate at synchronous speed at full load?
A: False
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: Which of the following single-phase motors offers the lowest starting torque?
A: Capacitor start/Induction run (CSIR)
Q: Which of the following single-phase motors offers the lowest starting torque?
A: Capacitor start/Capacitor run (CSCR)
Q: Which of the following single-phase motors offers the lowest starting torque?
A: Resistance start/Induction run (RSIR)
Q: Which of the following single-phase motors offers the lowest starting torque?
A: Permanent-split capacitor (PSC)
Q: A magnetic field is created around an electrical conductor when an electric current is passed through it. This is known as what?
A: Magnetism
Q: A magnetic field is created around an electrical conductor when an electric current is passed through it. This is known as what?
A: Resistance
Q: A magnetic field is created around an electrical conductor when an electric current is passed through it. This is known as what?
A: Electromagnetism
Q: A magnetic field is created around an electrical conductor when an electric current is passed through it. This is known as what?
A: Opposites attract