Show the power flow diagram for a motor operating at 1745 RPM, a torque of 23...
Show the power flow diagram for a motor operating at 1745 RPM, a torque of 23 lb.ft. an input voltage of 230 VAC, and an input current of 30A.
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Show the power flow diagram for a motor operating at 1745 RPM, a
torque of 23...
A 230 V, 1000 rpm, 30 A separately excited motor has armature resistance and inductance of...
A 230 V, 1000 rpm, 30 A separately excited motor has armature resistance and inductance of 0.7 Ω and 50 mH respectively. Motor is controlled in regenerative braking by a chopper operating at 800 Hz from a dc source of 230 V. Assuming continuous conduction a) Calculate duty ratio of chopper for rated torque and the speed of 800 rpm. b) What will be the motor speed for duty ratio of 0.6 and rated motor torque? c) What will be...
a motor is operating at 3450 RPM and is producing a torque of 32 all-in. What...
a motor is operating at 3450 RPM and is producing a torque of 32 all-in. What is the output horsepower of the motor
The output torque of a motor is 69.2 lb-ft when it operates at 950 rpm. Calculate...
The output torque of a motor is 69.2 lb-ft when it operates at 950 rpm. Calculate the losses in the machine and its efficiency if, under this condition, the power input is 10900 watts. Topic: DC MOTOR: Efficiency and Power Losses
A 12-pole, brushless, DC motor has a no-load speed of 5000rpm and a stall torque of 50 in-oz when operating at rated voltage of 60V. Testing shows that no-load speed and stall torque vary linearly wi...
A 12-pole, brushless, DC motor has a no-load speed of 5000rpm and a stall torque of 50 in-oz when operating at rated voltage of 60V. Testing shows that no-load speed and stall torque vary linearly with applied voltage. Also, with a constant applied voltage the speed decreases linearly as delivered torque increases. Calculate the following: Torque that the motor delivers at 2000 rpm when operated at rated voltage. T a) b) Fundamental frequency of the applied voltage waveform at this...
Please show work, i will rate. Thank you! 2. At the power plant, the water for...
Please show work, i will rate. Thank
you!
2. At the power plant, the water for cooling must be removed at a minimum rate of 65 gal/min. A pump is found in storage that has a displacement of 4.8 ins/rev. A motor is also found; it operates at 960 rpm, 230 VAC, and 22.5 A. The power factor on the motor has an overall n=89%. If a 4" pulley is attached to the motor, what size pulley should be attached...
The three-phase wye-connected induction motor nameplate gives the following information: 400 V, 1755 rpm, 60 Hz....
The three-phase wye-connected induction motor nameplate gives the following information: 400 V, 1755 rpm, 60 Hz. Rotor speed at no-load is 1799 rpm. At rated voltage and frequency motor core losses are 400 W. At rated rotor speed, mechanical losses are 400 W. The available parameters of the motor conventional equivalent circuit (6-parameters IEEE model) are: R1 = 0.2 Ω, R’2 = 0.2 Ω, X1 = 0.5 Ω, X’2 = 0.2 Ω and Xφ = 20.0 Ω. In all calculations,...
fluid power A hydraulic motor and operates at a speed of 1750 rpm and a pressure of 1000 psi. If the actual and theoretical flow rates consumed by the motor are 75 gpm and 65 gpm, respectively, and t...
fluid power
A hydraulic motor and operates at a speed of 1750 rpm and a pressure of 1000 psi. If the actual and theoretical flow rates consumed by the motor are 75 gpm and 65 gpm, respectively, and the actual torque delivered by the motor is 1300 in.lb, find the mechanical and overall efficiencies
A hydraulic motor and operates at a speed of 1750 rpm and a pressure of 1000 psi. If the actual and theoretical flow rates consumed by...
A 227-V three-phase motor runs 1,650 rpm at a load requiring 11 N-m torque. The motor...
A 227-V three-phase motor runs 1,650 rpm at a load requiring 11 N-m torque. The motor draws 9.5 A of current and the power factor is 0.94, lagging. Determine the power loss (in W) in the motor. (Enter your answer as a number without the units.)
A 208-V three-phase motor runs 1,770 rpm at a load requiring 5 N-m torque. The motor...
A 208-V three-phase motor runs 1,770 rpm at a load requiring 5 N-m torque. The motor draws 6.5 A of current and the power factor is 0.88, lagging. Determine the power loss (in W) in the motor. (Enter your answer as a number without the units.)
Based on the motor nameplate below, when operated at the rated voltage and current, determine the following: a. The real power, P, reactive power, Q, and apparent power, S, used by the motor. b. Sketc...
Based on the motor nameplate below, when operated at the rated
voltage and current, determine the following:
a. The real power, P, reactive power, Q, and
apparent power, S, used by the motor.
b. Sketch an equivalent circuit to model for
the motor.
c. The efficiency of the motor (calculated from
shaft power/real power in).
d. What value of capacitor would you use to
correct the power factor to 1?
e. Sketch a vector diagram showing the phasor
current in...
A 12-pole, brushless, DC motor has a no-load speed of 5000rpm and a stall torque of 50 in-oz when operating at rated voltage of 60V. Testing shows that no-load speed and stall torque vary linearly with applied voltage. Also, with a constant applied voltage the speed decreases linearly as delivered torque increases. Calculate the following: Torque that the motor delivers at 2000 rpm when operated at rated voltage. T a) b) Fundamental frequency of the applied voltage waveform at this...
Please show work, i will rate. Thank
you!
2. At the power plant, the water for cooling must be removed at a minimum rate of 65 gal/min. A pump is found in storage that has a displacement of 4.8 ins/rev. A motor is also found; it operates at 960 rpm, 230 VAC, and 22.5 A. The power factor on the motor has an overall n=89%. If a 4" pulley is attached to the motor, what size pulley should be attached...
fluid power
A hydraulic motor and operates at a speed of 1750 rpm and a pressure of 1000 psi. If the actual and theoretical flow rates consumed by the motor are 75 gpm and 65 gpm, respectively, and the actual torque delivered by the motor is 1300 in.lb, find the mechanical and overall efficiencies
A hydraulic motor and operates at a speed of 1750 rpm and a pressure of 1000 psi. If the actual and theoretical flow rates consumed by...
A 208-V three-phase motor runs 1,770 rpm at a load requiring 5 N-m torque. The motor draws 6.5 A of current and the power factor is 0.88, lagging. Determine the power loss (in W) in the motor. (Enter your answer as a number without the units.)
Based on the motor nameplate below, when operated at the rated
voltage and current, determine the following:
a. The real power, P, reactive power, Q, and
apparent power, S, used by the motor.
b. Sketch an equivalent circuit to model for
the motor.
c. The efficiency of the motor (calculated from
shaft power/real power in).
d. What value of capacitor would you use to
correct the power factor to 1?
e. Sketch a vector diagram showing the phasor
current in...
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