A 20-hp 240vdc 4-pole shunt motor operates at rated load


A 20-Hp, 240VDC, 4-pole Shunt motor operates at rated load and 1700rpm and an efficiency of 88%. It has armature resistance of 0.2Ω and field resistance of 240Ω. Find:

a)Power input to the motor

b)IFLA of the motor

c)Mechanical power developed

d)The efficiency of the motor

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Electrical Engineering: A 20-hp 240vdc 4-pole shunt motor operates at rated load
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