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WorksheetsInduction Motor Problem Solving
Total questions: 10
Worksheet time: 30mins
3-phase induction motor having synchronous speed of 1200 rpm draws 70 kw
from a 3 phase feeder. the copper losses and iron losses in the stator
amount to 4 kW. Friction and windage losses ammount to 2 kW.if the motor
runs at 1170 rpm, determine the rotor power input
76kW
66 kW
56 kW
46kW
3-phase induction motor having synchronous speed of 1200 rpm draws 70 kw
from a 3 phase feeder. the copper losses and iron losses in the stator
amount to 4 kW. Friction and windage losses ammount to 2 kW.if the motor
runs at 1170 rpm, determine the rotor copper loss
4.65 kW
2.65 kW
3.65 kW
1.65 kW
3-phase induction motor having synchronous speed of 1200 rpm draws 70 kw
from a 3 phase feeder. the copper losses and iron losses in the stator
amount to 4 kW. Friction and windage losses ammount to 2 kW.if the motor
runs at 1170 rpm, determine the mechanical power developed
74.35 kW
64.35 kW
84.35 kW
Red Horse
3-phase induction motor having synchronous speed of 1200 rpm draws 70 kw
from a 3 phase feeder. the copper losses and iron losses in the stator
amount to 4 kW. Friction and windage losses ammount to 2 kW.if the motor
runs at 1170 rpm, determine the efficiency of the motor
29.07%
39.07%
75.09%
89.07%
A 10 hp, 4 pole, 25 Hz, 3 phase induction motor is taking 9100 Watts
from the line.
Core loss is 290 Watts
Stator Copper loss is 568 Watts
Rotor copper loss is 445 watts
friction and windage loss is 121 watts
determine the output power
A 10 hp, 4 pole, 25 Hz, 3 phase induction motor is taking 9100 Watts
from the line.
Core loss is 290 Watts
Stator Copper loss is 568 Watts
Rotor copper loss is 445 watts
friction and windage loss is 121 watts
Rotor Power input
A 10 hp, 4 pole, 25 Hz, 3 phase induction motor is taking 9100 Watts
from the line.
Core loss is 290 Watts
Stator Copper loss is 568 Watts
Rotor copper loss is 445 watts
friction and windage loss is 121 watts
Determine the slip
A 10 hp, 4 pole, 25 Hz, 3 phase induction motor is taking 9100 Watts
from the line.
Core loss is 290 Watts
Stator Copper loss is 568 Watts
Rotor copper loss is 445 watts
friction and windage loss is 121 watts
Determine the rotor speed
A 10 hp, 4 pole, 25 Hz, 3 phase induction motor is taking 9100 Watts
from the line.
Core loss is 290 Watts
Stator Copper loss is 568 Watts
Rotor copper loss is 445 watts
friction and windage loss is 121 watts
Determine the torque
A 5-hp, 3 phase motor draws current when connected to 230 V. Determine the current drawn by the motor if the power factor is 0.90 and efficiency is 83%
10.530 Amperes
11.530 Amperes
12.530 Amperes
13.530 Amperes
