Homework Answers
to be specific no load speed
of motor is not given,to find speed regulation. :) Thanks.
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A. A three-phase ac induction motor drives a mechanical load. The motor's terminal voltage is 470V,...
Three-phase induction motor The three-phase induction motor nameplate gives the following informa...
Three-phase induction motor The three-phase induction motor nameplate gives the following information: 100 HP, 6 poles, 600 V, 60 Hz, PF =0.87. Rated motor slip s=0.0275 and rated motor current is 91.7 A. Measured at rated speed friction and ventilation losses are 1100 W. Measured between two motor terminals resistance is 0.305 Ω. f) For a load such where the motor rotates at the speed of 1180 r / min, determine shaft torque and calculate the mechanical power in HP,...
A 4 phase, 460 V, 60 Hz, 26.8 hp, 4 pole, Y-connected induction motor draws 25...
A 4 phase, 460 V, 60 Hz, 26.8 hp, 4 pole, Y-connected
induction motor draws 25 A at a power factor of 0.9 lagging. Core
loss is 900 W, stator copper loss is 1100W, friction and winding
losses are 300 W, and stray loss is neglected. The machine shaft
rotates at 1738 rpm. Calculate the air gap power and output load
torque
- [Induction Motor - 15 points) A three-phase, 460 V, 60 Hz, 26.8 hp, 4-pole, Y-connected induction motor...
A three-phase, 2.2 kV, 60 Hz, Y-connected induction motor has the following parameters: R1 = 0.2 ...
A three-phase, 2.2 kV, 60 Hz,
Y-connected induction motor has the following parameters: R1 = 0.2
Ω R2` = 0.4 Ω X1 + X2` = 1.5 Ω The motor’s full load speed is 580
rpm. Ignore the rotational losses and calculate: a. Full load
torque b. Output power rating c. Starting current d. Starting
torque
No poles were provided
A three-phase, 2.2 kV, 60 Hz, Y-connected induction motor has the following parameters: The motor's full load speed is 580 rpm....
A 10 hp, 60 Hz, three-phase induction motor is delivering rated power while running at 864...
A 10 hp, 60 Hz, three-phase induction motor is delivering rated power while running at 864 rpm. The motor is drawing power from a 208 V, three-phase source. DC tests determine: R1 0.2 ? and R2-0.15 ?, we do not know XI and X2. Ignore XM. The rotational and core losses are 200 W and 100 W respectively. Find: a) The output (shaft torque). b) The number of poles. c) The input power and efficiency d) The power factor at...
6. [Induction Motor - 15 points] A three-phase, 460 V, 60 Hz, 26.8 hp, 4-pole, Y-connected...
6. [Induction Motor - 15 points] A three-phase, 460 V, 60 Hz, 26.8 hp, 4-pole, Y-connected induction motor draws 25 A at a power factor of 0.9 lagging. The core loss is 900 W, stator copper loss is 1100 W, friction and windage loss is 300 W, and stray loss is neglected. The machine shaft rotates at a speed of 1738 rpm. Calculate the air gap power and output load torque.
A three phase, 60 Hz induction motor rated at 440 V and 40 hp drives a...
A three phase, 60 Hz induction motor rated at 440 V and 40 hp drives a load at 1710 rpm. The induction motor has the following impedances referred to the stator in /phase: R,=0.1512, X,=0.7512; R2=1.222,X=0.7522; X=25 12 . The core loss is 450 W and friction and windage loss is 250 W. Calculate the following 1. line current and power factor 2. Real and reactive input power 3. Air-gap power 4. Mechanical power and torque developed 5. shaft horse...
A 2 pole ac induction motor operates on a 480 V three phase power system. The...
A 2 pole ac induction motor operates on a 480 V three phase power system. The motor is rated a 50 hp and 460 V with a full load shaft speed of 3400 rpm. The motor currently operates a 3510 rpm. determine the mechanical power the motor develops in hp using the slip method.
A 2 pole ac induction motor operates on a 480 V three phase power system. The motor is rated a 50 hp and 460 V with...
1. A six pole, 240V, 50 Hz three phase squirrel-cage induction motor has a no-load speed...
1. A six pole, 240V, 50 Hz three phase squirrel-cage induction motor has a no-load speed of 103 rad/s and a speed regulation of 5% at rated load. Find the amount of slip (in rpm) at full load for this motor. 2.. A 2 HP, 240 VAC, 60 Hz, capacitor-start motor is 75% efficient and draws 10 A at full load. What is this motor's power factor at rated load? 3. A wound rotor, 3 phase induction motor in Mr....
Q4. A six-pole, three-phase, 60 Hz induction motor is operating at a speed of 1164 rev...
Q4. A six-pole, three-phase, 60 Hz induction motor is operating at a speed of 1164 rev min. The input power at this speed is 33 kW and the stator copper loss is 1200 W. Find a) Slip b Airgap power c Rotor copper loss d) Developed torque e) Developed horsepower f) If the rotational losses are 500 W, find the output torque and horsepower
Problem 3: Consider an 6 pole 3-phase AC induction motor being driven at 60 Hz a)...
Problem 3: Consider an 6 pole 3-phase AC induction motor being driven at 60 Hz a) b) c) d) When connected to a load, the motor outputs 2 kW of power assuming negligible rotational losses while rotating at a speed of 1070 rpm. What is the slip? (5 points) When connected to a load, the motor outputs 2 kW of power assuming negligible rotational losses while rotating at a speed of 1070 rpm. What is the developed torque? (5 points)...
A 4 phase, 460 V, 60 Hz, 26.8 hp, 4 pole, Y-connected
induction motor draws 25 A at a power factor of 0.9 lagging. Core
loss is 900 W, stator copper loss is 1100W, friction and winding
losses are 300 W, and stray loss is neglected. The machine shaft
rotates at 1738 rpm. Calculate the air gap power and output load
torque
- [Induction Motor - 15 points) A three-phase, 460 V, 60 Hz, 26.8 hp, 4-pole, Y-connected induction motor...
A three-phase, 2.2 kV, 60 Hz,
Y-connected induction motor has the following parameters: R1 = 0.2
Ω R2` = 0.4 Ω X1 + X2` = 1.5 Ω The motor’s full load speed is 580
rpm. Ignore the rotational losses and calculate: a. Full load
torque b. Output power rating c. Starting current d. Starting
torque
No poles were provided
A three-phase, 2.2 kV, 60 Hz, Y-connected induction motor has the following parameters: The motor's full load speed is 580 rpm....
A 10 hp, 60 Hz, three-phase induction motor is delivering rated power while running at 864 rpm. The motor is drawing power from a 208 V, three-phase source. DC tests determine: R1 0.2 ? and R2-0.15 ?, we do not know XI and X2. Ignore XM. The rotational and core losses are 200 W and 100 W respectively. Find: a) The output (shaft torque). b) The number of poles. c) The input power and efficiency d) The power factor at...
6. [Induction Motor - 15 points] A three-phase, 460 V, 60 Hz, 26.8 hp, 4-pole, Y-connected induction motor draws 25 A at a power factor of 0.9 lagging. The core loss is 900 W, stator copper loss is 1100 W, friction and windage loss is 300 W, and stray loss is neglected. The machine shaft rotates at a speed of 1738 rpm. Calculate the air gap power and output load torque.
A three phase, 60 Hz induction motor rated at 440 V and 40 hp drives a load at 1710 rpm. The induction motor has the following impedances referred to the stator in /phase: R,=0.1512, X,=0.7512; R2=1.222,X=0.7522; X=25 12 . The core loss is 450 W and friction and windage loss is 250 W. Calculate the following 1. line current and power factor 2. Real and reactive input power 3. Air-gap power 4. Mechanical power and torque developed 5. shaft horse...
A 2 pole ac induction motor operates on a 480 V three phase power system. The motor is rated a 50 hp and 460 V with a full load shaft speed of 3400 rpm. The motor currently operates a 3510 rpm. determine the mechanical power the motor develops in hp using the slip method.
A 2 pole ac induction motor operates on a 480 V three phase power system. The motor is rated a 50 hp and 460 V with...
1. A six pole, 240V, 50 Hz three phase squirrel-cage induction motor has a no-load speed of 103 rad/s and a speed regulation of 5% at rated load. Find the amount of slip (in rpm) at full load for this motor. 2.. A 2 HP, 240 VAC, 60 Hz, capacitor-start motor is 75% efficient and draws 10 A at full load. What is this motor's power factor at rated load? 3. A wound rotor, 3 phase induction motor in Mr....
Q4. A six-pole, three-phase, 60 Hz induction motor is operating at a speed of 1164 rev min. The input power at this speed is 33 kW and the stator copper loss is 1200 W. Find a) Slip b Airgap power c Rotor copper loss d) Developed torque e) Developed horsepower f) If the rotational losses are 500 W, find the output torque and horsepower
Problem 3: Consider an 6 pole 3-phase AC induction motor being driven at 60 Hz a) b) c) d) When connected to a load, the motor outputs 2 kW of power assuming negligible rotational losses while rotating at a speed of 1070 rpm. What is the slip? (5 points) When connected to a load, the motor outputs 2 kW of power assuming negligible rotational losses while rotating at a speed of 1070 rpm. What is the developed torque? (5 points)...
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