Question

A 3-phase 440V line-to-line source drives a 18 horsepower motor at 80% efficiency and 80% power...

A 3-phase 440V line-to-line source drives a 18 horsepower motor at 80% efficiency and 80% power factor lagging. The 18 horsepower figure is the output mechanical power.

Find the current, real power, and reactive power drawn by the motor. What would this problem look like to set up?

Homework Answers

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
Q1. A 3-phase, 400 V synchronous motor having a power consumption of 50 kW is connected...
Q1. A 3-phase, 400 V synchronous motor having a power consumption of 50 kW is connected in parallel with an induction motor which takes 200 kW at a power factor of 0ยท8 lagging. (i) Calculate the current drawn from the mains when the power factor of the synchronous motor is unity. (ii) At what power factor should the synchronous motor operate so that the current drawn from the mains is minimum.
Q4) A three-phase, 104 kW, 3300 V, 50 Hz, Y-connected induction motor delivers full output power...
Q4) A three-phase, 104 kW, 3300 V, 50 Hz, Y-connected induction motor delivers full output power to a load connected to its shaft. The full-load slip is 0.02 and full-load power factor is 0.85 lagging. If the stator copper loss is 2400 W, the stator core loss is 3500 W, and the friction and windage loss is 1200 W. Calculate: (i) The developed mechanical power. (ii) The air gap power. (iii) The rotor copper loss. (iv) The efficiency of the...
A 480V, 60Hz, 50hp, three phase induction motor draws 60 amps at 0.85 power factor lagging....
A 480V, 60Hz, 50hp, three phase induction motor draws 60 amps at 0.85 power factor lagging. The stator copper losses are 2kW and the rotor copper losses are 700W. The friction and windage losses are 600W, the core losses are 1800W. (1) Determine the airgap power. (2) Determine the power converted into mechanical form. (3) Determine the net output power. (4) Determine the efficiency of the motor.
A 3-phase 50Hz 2-pole 440V (L-L rms) induction motor drive has a rated speed of 2955...
A 3-phase 50Hz 2-pole 440V (L-L rms) induction motor drive has a rated speed of 2955 rpm and rated torque of 35 Nm. This motor drives a load with a torque characteristic that increases linearly with speed such that it equals the load torque at the rated speed. It draws a current of 3.0 A(rms) per phase at the rated voltage at a power factor of 0.81 (lagging). The stator resistance Rs = {r_s} ohms. At the rated operating speed,...
1. A single phase circuit has a load of 500kVa at a power factor of 0.707...
1. A single phase circuit has a load of 500kVa at a power factor of 0.707 lagging. Calculate the kVA of the capacitors needed to improve the power factor to unity 3. When connected to a 120-v(rms), 60Hz power line, a load absorbes 4 kw at a lagging power factor of 0.8. Find the capacitance necessary to raise the pf to 0.9 4. A three phase motor draws 20kva at 0.707 power factor lagging from a 208V source. Determine the...
A 3 phase, 3.3 kV industrial plant has an overall power factor of 0.88 lagging. A...
A 3 phase, 3.3 kV industrial plant has an overall power factor of 0.88 lagging. A 200 kVA synchronous motor is added to the system and is run at zero power factor and slightly reduced rating to provide power factor correction only. The total load is then 350 kVA at unity power factor. It was then decided to run the synchronous machine at its rated kVA and use it as a source of mechanical power, what gross mechanical power would...
1. A dc motor connected to a 240 V line produces a mechanical output of 160...
1. A dc motor connected to a 240 V line produces a mechanical output of 160 hp.Knowing that the losses are 12 kW, calculate the input power and the line current. 2. An electric motor driving a skip hoist withdraws 1.5 metric tons of minerals from a trench 20 m deep every 30 seconds. If the hoist has an overall efficiency of 94 percent, calculate the power output of the motor in horsepower and in kilowatts.
7-     a 3 phase induction motor haring a synchronous speed is 1600 rpm. it draws a...
7-     a 3 phase induction motor haring a synchronous speed is 1600 rpm. it draws a current of 100Kw a from a 3-phase source. The copper losses and iron losses in the stator are 6KW if the motor runs at 1500 rpm, calculate the following A- The active power transom to the rotor B- The rotor I2R losses C- The mechanical power developed. D- The mechanical power delivered to the load, knowing that the windage and friction losses are equal...
Please be clear in conceot and handwriting, thank you. A 20 kVA three-phase synchronous machine is...
Please be clear in conceot and handwriting, thank you. A 20 kVA three-phase synchronous machine is connected to a 480 V, 60 Hz electrical service. The per-phase armature reactance is 80%. Armature resistance is negligible, as are all other sources of power loss. Part A: Motor Configuration The machine is configured to run as a motor. Its rated mechanical power is 20 HP and it is 94% efficient. The motor provides rated output mechanical power. The excitation is set such...
A 3- phase, 2 pole Y-connected synchronous machines has a line-line voltage of 6,000V in 60Hz...
A 3- phase, 2 pole Y-connected synchronous machines has a line-line voltage of 6,000V in 60Hz power line, has an armature reactance of 2ohms/ phase and negligible armature resistance. Compute the following A) In case of generating action if the line current is 385 A at a leading power factor of 0.8, the armature voltage per phase is 3464V, Compute the voltage per phase and power angle. B) Draw the phasor diagram. C) If the losses in the machine is...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT