A 25-HP, continuous-duty, three-phase squirrel-cage induction motor is connected to a 240-volt line. The conductors are run in conduit to the motor. The motor does not have a NEMA design code listed on the nameplate. The termination temperature rating of the devices is not known. Copper conductors with THWN insulation are to be used for the motor connection. What size conductors should be used?

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A:

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A: It is given that: IL=2500 ARf1=Rf2=50 ΩRa1=Ra2=0.01 ΩEg1=230 VEg2=235 V

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A:

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A:

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Q: The ac armature winding of an alternator isA. Always Star connected. B. Always delta connected

A: The solution is provided in the following section:

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A: Number of poles P=6, Electrical output frequency f=60 Hz, EMF in each coil EC=10 Volt.

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Q: What are the effects of zero sequence current on the excitation field windings?

A: The explanation is as follows.

Three Phase Induction Motor

The induction motor is an electric motor that runs on AC (alternating current) and it is of two type single phase motor that work on single-phase power supply and three-phase motor that work on three-phase power supply.