3-phase 3730W, 220V, 4-pole and 50 Hz asynchronous motor operates at full load with a slip of 0.025. The sum of the rotational losses including friction + windage losses and other (stray load) losses is 5% of the output power. Find the induced (electromagnetic) moment at full load. O 40.2582 N.m O 70.7351 N.m O 38.3588 N.m 63.3692 N.m O 51.1451 N.m O 12.7863 N.m O 84.6395 N.m O 25.5725 N.m

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3-phase 3730W, 220V, 4-pole and 50 Hz asynchronous motor operates at full load
with a slip of 0.025. The sum of the rotational losses including friction + windage
losses and other (stray load) losses is 5% of the output power. Find the induced
(electromagnetic) moment at full load.
40.2582 N.m
O 70.7351 N.m
38.3588 N.m
63.3692 N.m
O 51.1451 N.m
12.7863 N.m
O 84.6395 N.m
25.5725 N.m
Transcribed Image Text:3-phase 3730W, 220V, 4-pole and 50 Hz asynchronous motor operates at full load with a slip of 0.025. The sum of the rotational losses including friction + windage losses and other (stray load) losses is 5% of the output power. Find the induced (electromagnetic) moment at full load. 40.2582 N.m O 70.7351 N.m 38.3588 N.m 63.3692 N.m O 51.1451 N.m 12.7863 N.m O 84.6395 N.m 25.5725 N.m
Expert Solution
Step 1

Power developed = output power + friction + windage loss + rotetional loss .

Induced power or airgap power = power developed/ (1-slip).

Induced torque = airgap power/ W 

Where w =(2×pi× synchronous speed)/ 60

 

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