A 380V, A-connected, 60HZ six-poles SM has a synchronous reactance of 0.149pu, and neglected armature resistance. When this motor is supplying 20hp at 0.88 PF leading, Its Paw=2.5kW, P, f+w =1.5kW. core 1. Find I, I,, and E. 2. Find efficiency at rated conditions. 3. Calculate the output torque of this motor at the rated conditions. 4. If the load is increased to 35hp with same losses, find the torque angle, the armature current, and the PF.
A 380V, A-connected, 60HZ six-poles SM has a synchronous reactance of 0.149pu, and neglected armature resistance. When this motor is supplying 20hp at 0.88 PF leading, Its Paw=2.5kW, P, f+w =1.5kW. core 1. Find I, I,, and E. 2. Find efficiency at rated conditions. 3. Calculate the output torque of this motor at the rated conditions. 4. If the load is increased to 35hp with same losses, find the torque angle, the armature current, and the PF.
Introductory Circuit Analysis (13th Edition)
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![A 380V, A-connected, 60HZ six-poles SM has a synchronous reactance of 0.149pu, and
neglected armature resistance. When this motor is supplying 20hp at 0.88 PF leading,
Its Pftw=2.5kW, Pore=1.5kW.
core
1. Find I, I,, and EA-
2. Find efficiency at rated conditions.
3. Calculate the output torque of this motor at the rated conditions.
4. If the load is increased to 35hp with same losses, find the torque angle, the armature current,
and the PF.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F243725ca-e3d5-4e97-9884-e5e0bcef096a%2F57c95e1d-5a6f-4bee-8823-54415ea89363%2Frnacs2d_processed.png&w=3840&q=75)
Transcribed Image Text:A 380V, A-connected, 60HZ six-poles SM has a synchronous reactance of 0.149pu, and
neglected armature resistance. When this motor is supplying 20hp at 0.88 PF leading,
Its Pftw=2.5kW, Pore=1.5kW.
core
1. Find I, I,, and EA-
2. Find efficiency at rated conditions.
3. Calculate the output torque of this motor at the rated conditions.
4. If the load is increased to 35hp with same losses, find the torque angle, the armature current,
and the PF.
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