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WorksheetsiNDUCTION MOTOR
Total questions: 11
Worksheet time: 6mins
Induced power equation is....
3I2 sRr′(1−s)
3I2 sRr′
motor speed = 950rpm, pole = 6, freq = 50Hz, find slip,s.
0.05
0.5
0.01
0.1
induction motor rotor type
stator & rotor
slip ring & wound
induction motor test
load test
no load test
dc power test
Given line voltage & current of Y connected induction motor are 415V, & 103 A with power factor 0.85 lagging. Determine input power.
48.86W
36.33W
62.93W
Advantages of induction motor
cheaper
high maintenance
speed constant
Ratio of slip speed and synchronous speed is....
rotation magnetic field speed
slip
rotor frquency
Given, mechanical power is 33.75kW, slip = 0.043, find Rotor Input Power (RIP)
35.27kW
784.88kW
1451.25W
32.3kW
Change 1500rpm to rad/s
14323.94
9424.78
157.08
3I2 Rs this formula refer to
stator core loss
stator copper loss
rotor input power
rotor copper loss
find efficiency
85.5%
88.5%
83.7%
