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Questions and Answers
What is the rotor speed of the motor at the rated voltage and frequency?
What is the rotor speed of the motor at the rated voltage and frequency?
- 1720 rpm
- 1754 rpm
- 1772 rpm (correct)
- 1790 rpm
What is the total power loss in the motor?
What is the total power loss in the motor?
- 2800 W (correct)
- 3800 W
- 2400 W
- 1800 W
What is the power converted by the motor?
What is the power converted by the motor?
- 18100 W
- 19100 W
- 16100 W (correct)
- 14100 W
What is the efficiency of the motor?
What is the efficiency of the motor?
What is the air-gap power of the motor?
What is the air-gap power of the motor?
What is the torque produced by the motor?
What is the torque produced by the motor?
What is the stator to rotor effective turns ratio of the given induction motor?
What is the stator to rotor effective turns ratio of the given induction motor?
What is the type of induction motor being referred to in the problem?
What is the type of induction motor being referred to in the problem?
What is the frequency of the supply voltage in the first part of the problem?
What is the frequency of the supply voltage in the first part of the problem?
What is the purpose of the DC test in the given problem?
What is the purpose of the DC test in the given problem?
What is the significance of the maximum torque occurring at a certain slip in an induction motor?
What is the significance of the maximum torque occurring at a certain slip in an induction motor?
In an induction motor, what is the speed of the stator magnetic field?
In an induction motor, what is the speed of the stator magnetic field?
What is the purpose of the locked-rotor test in the given problem?
What is the purpose of the locked-rotor test in the given problem?
In an induction motor, what is the torque produced dependent on?
In an induction motor, what is the torque produced dependent on?
What is the purpose of the transformer equivalent circuit in an induction motor?
What is the purpose of the transformer equivalent circuit in an induction motor?
What is the power factor of a 480-V 60-Hz, 50-hp, three-phase induction motor that is drawing 60 A at 0.85 PF lagging?
What is the power factor of a 480-V 60-Hz, 50-hp, three-phase induction motor that is drawing 60 A at 0.85 PF lagging?
How is the efficiency of an induction motor affected by the stator copper losses and rotor copper losses?
How is the efficiency of an induction motor affected by the stator copper losses and rotor copper losses?
What is the full-load slip of a 208-V 10-hp, four-pole, 60-Hz, Y-connected induction motor?
What is the full-load slip of a 208-V 10-hp, four-pole, 60-Hz, Y-connected induction motor?
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