For the motor and for a fan-type load, calculate the following if the voltage is reduced by 20%:
a. Motor speed
b. Starting torque
c. Starting current
d. Motor efficiency (ignore rotational and core losses)
Load = fan-type
a. Using small slip-approximation,
b. Using s = 1 in the following equation,
c.
d. Using the method used in the last problem, efficiency = 93.04%.
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