A 150 hp motor is 89% loaded and has an efficiency of 92% and a power...
A 150 hp motor is 89% loaded and has an efficiency of 92% and a power factor of 0.83. What sized capacitor, rounded to the nearest kVAR, is needed to correct this motor's power factor to 0.92?
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A 150 hp motor is 89% loaded and has an efficiency of 92% and a
power...
Please show detailed work and write clearly. Thank you. 7. Consider a 50 HP induction motor...
Please show detailed work and write clearly. Thank you.
7. Consider a 50 HP induction motor with a nameplate rated energy efficiency of 92% and a power factor of pfe -0.85. Determine the required size in kVAR of a capacitor to be installed in parallel with the induction motor so that the power factor becomes at least pf, 0.95
A three-phase induction motor delivers 500 hp at an efficiency of 0.91, the operating power factor...
A three-phase induction motor delivers 500 hp at an efficiency of 0.91, the operating power factor being 0.76 lagging. A loaded synchronous motor with a power consumption of 100 kW is connected in parallel with the induction motor. Calculate the necessary kVA and the operating power factor of the synchronous motor if the overall power factor is to be unity. Answer should be 365 kVA, 0.274
Question 5 A 5.2 hp (1hp=746W) motor with a 0.65 lagging power factor and an efficiency...
Question 5 A 5.2 hp (1hp=746W) motor with a 0.65 lagging power factor and an efficiency of 90% is connected to a 230V, 50Hz supply. 5.1 Establish the power triangle for the load. (5) 5.2 Determine the power-factor capacitor that must be placed in parallel with the load to raise the power factor to unity. (5) 5.3 Determine the change in supply current from the uncompensated to the compensated system. (5) 17 5.4 Find the network equivalent to the above.
Problem 1. (25 points) A 200-hp 440-V 0.8-PF-leading љс0nnected synchronous motor has an armature resistance of 0.6 Ω and a synchronous reactance of 8.0 Ω. Its efficiency at full load is 90 percent....
Problem 1. (25 points) A 200-hp 440-V 0.8-PF-leading љс0nnected synchronous motor has an armature resistance of 0.6 Ω and a synchronous reactance of 8.0 Ω. Its efficiency at full load is 90 percent. 1. What is the input power to the motor at rated conditions? 2. What is the line current of the motor at rated conditions? What is the phase current of the motor at rated conditions? 3. What is the reactive power consumed by or supplied by the...
A facility with a demand of 700 kW has a power factor of 0.72 . The...
A facility with a demand of 700 kW has a power factor of 0.72 . The facility is charged a penalty due to the power factor being less than 0.82 , To ensure the facility will never again pay a power factor penalty, what size of capacitor is needed to correct the power factor to 85%? 240.8 kVAR 260.2 kVAR 290.5 kVAR 350.6 kVAR
A 75-hp (shaft output) motor that has an efficiency of 80% is worn out and is...
A 75-hp (shaft output) motor that has an efficiency of 80% is worn out and is to be replaced by a new motor that has an efficiency of 95.4%. The motor operates 4,368 hours per year at a load factor of 0.75. If the cost of electricity is $0.12/kWh, determine the amount of energy and money saved in one year as a result of installing the new motor.
a 3 phase 440v induction motor has produced an output power of 75 hp and full...
a 3 phase 440v induction motor has produced an output power of 75 hp and full load efficiency of 91% and power factor of 83%. A calculate nominal line current B if stator resistance per phase is .1omh what are copper losses at stator ? C if losses are 1.2 kw what is power delivered to rotor d determine i2r losses in rotor . E what is slip f synchronous speed is 1800 rpm what is the speed of motor
If an AC induction motor says in nameplate that the power is 100 HP, and it...
If an AC induction motor says in nameplate that the power is 100 HP, and it has an efficiency of 88%. It is operating at a 90% of full load. What is the input kW to the motor?
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...
An elevator uses a 10,000 hp motor. If the motor has a power factor of 30" and is 75% efficient, what is the amount of current necessary to operate the motor if the rms voltage is 1 kV? 8, mo...
An elevator uses a 10,000 hp motor. If the motor has a power factor of 30" and is 75% efficient, what is the amount of current necessary to operate the motor if the rms voltage is 1 kV? 8, motor
An elevator uses a 10,000 hp motor. If the motor has a power factor of 30" and is 75% efficient, what is the amount of current necessary to operate the motor if the rms voltage is 1 kV? 8, motor
Please show detailed work and write clearly. Thank you.
7. Consider a 50 HP induction motor with a nameplate rated energy efficiency of 92% and a power factor of pfe -0.85. Determine the required size in kVAR of a capacitor to be installed in parallel with the induction motor so that the power factor becomes at least pf, 0.95
Question 5 A 5.2 hp (1hp=746W) motor with a 0.65 lagging power factor and an efficiency of 90% is connected to a 230V, 50Hz supply. 5.1 Establish the power triangle for the load. (5) 5.2 Determine the power-factor capacitor that must be placed in parallel with the load to raise the power factor to unity. (5) 5.3 Determine the change in supply current from the uncompensated to the compensated system. (5) 17 5.4 Find the network equivalent to the above.
Problem 1. (25 points) A 200-hp 440-V 0.8-PF-leading љс0nnected synchronous motor has an armature resistance of 0.6 Ω and a synchronous reactance of 8.0 Ω. Its efficiency at full load is 90 percent. 1. What is the input power to the motor at rated conditions? 2. What is the line current of the motor at rated conditions? What is the phase current of the motor at rated conditions? 3. What is the reactive power consumed by or supplied by the...
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...
An elevator uses a 10,000 hp motor. If the motor has a power factor of 30" and is 75% efficient, what is the amount of current necessary to operate the motor if the rms voltage is 1 kV? 8, motor
An elevator uses a 10,000 hp motor. If the motor has a power factor of 30" and is 75% efficient, what is the amount of current necessary to operate the motor if the rms voltage is 1 kV? 8, motor
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