Question

A three phase, 4 pole induction motor has the nominal speed of 1425 rpm. If the...

A three phase, 4 pole induction motor has the nominal speed of 1425 rpm. If the stator, rotor and airgap losses are all the same what is the efficiency of the machine?

Engineering   Electrical-Engineering   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
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...
A 6-pole and three-phase induction motor has synchronous speed of 1125 RPM. a) Find the no-load...
A 6-pole and three-phase induction motor has synchronous speed of 1125 RPM. a) Find the no-load and full-load operating speed of motor for the cases given 1. 2.5Hz electrical frequency of rotor for no-load condition. (15p) 2. 6.3Hz electrical frequency of rotor for full-load condition. (15p) b) Find the speed regulation of motor by using parameters found above. (10p) c) Determine the electrical frequency of rotor under full-load condition so that speed regulation would be equal to 5%? (Electrical frequency...
A 37.3 kW, 3 phase, 4 pole, 50 Hz, induction motor has a full load efficiency...
A 37.3 kW, 3 phase, 4 pole, 50 Hz, induction motor has a full load efficiency of 85%. The friction and windage losses are one third of the no load losses and the copper loss equals the iron loss at full load. Find the full load speed. Stator resistance may be neglected. [Answer: 1401.3 rpm]
2. A 6-pole and three-phase induction motor has synchronous speed of (1000+X) RPM. a) Find the...
2. A 6-pole and three-phase induction motor has synchronous speed of (1000+X) RPM. a) Find the no-load and full-load operating speed of motor for the cases given, 1. 2.5Hz electrical frequency of rotor for no-load condition. (15p) 2. 6.3Hz electrical frequency of rotor for full-load condition. (15p) b) Find the speed regulation of motor by using parameters found above. (10p) c) Determine the electrical frequency of rotor under full-load condition so that speed regulation would be equal to 5%? (Electrical...
Q4 (a) A 3-phase induction motor having a synchronous speed of 1200rpm draws 80kW from a...
Q4 (a) A 3-phase induction motor having a synchronous speed of 1200rpm draws 80kW from a 3-phase feeder. The copper losses and core losses in the stator amount to 5kW. If the motor runs at 1152rpm, calculate: (i) the rotor input power; (ii) the rotor copper losses; (iii) the gross mechanical power output; (iv) the net mechanical power with knowing that the windage and friction losses are 2kW; (v) the efficiency of the motor (b) Compare the brushed motor (DC...
The parameters of a 3-phase, 4-pole, 50 Hz, Y-connected, wound-rotor induction motor are listed below. These...
The parameters of a 3-phase, 4-pole, 50 Hz, Y-connected, wound-rotor induction motor are listed below. These are the default values of the "Asynchronous Machine" model in MATLAB Simulink. r1=0.5968 Ω; r2=0.6258 Ω; L1=0.0003495 H; L2=0.005473 H; Lm=0.0354 H; Stator line voltage = 400 V rms. The motor for rotor speeds nm= 0 to 1500 rpm. X1= 0.1097 ohm, X2= 1.719 ohm , Xm= 11.12 ohm, RTH = 0.5853 , XTH = 0.1395 and VTH = 230.82 V. Suppose the motor...
A three-phase, 60-Hz, 4-pole, 440-V (line-line, rms) induction-motor drive has a full-load (rated) speed of 1746...
A three-phase, 60-Hz, 4-pole, 440-V (line-line, rms) induction-motor drive has a full-load (rated) speed of 1746 rpm. The rated torque is 40 Nm. Keeping the air gap flux-density peak constant at its rated value. The frequency and voltage of the motor from above are adjusted such that the fan speed is changed to 600 rpm. The motor should be operating at 3% slip and rated Bm. What is the motor efficiency?
Q1. A 440 V, 60 Hz, six-pole, 3 phase induction motor is taking 50 kVA at...
Q1. A 440 V, 60 Hz, six-pole, 3 phase induction motor is taking 50 kVA at 0.8 power factor and is running at a slip of 2.5 percent. The stator copper losses are 0.5 kW and rotational losses are 2.5 kW. i) The rotor copper losses ii) The shaft hp iii) The efficiency iv) The shaft torque
The parameters of a 3-phase, 4-pole, 50 Hz, Y-connected, wound-rotor induction motor are listed below. These...
The parameters of a 3-phase, 4-pole, 50 Hz, Y-connected, wound-rotor induction motor are listed below. These are the default values of the “Asynchronous Machine” model in MATLAB Simulink. r1=0.5968 ?; r2=0.6258 ?; L1=0.0003495 H; L2=0.005473 H; Lm=0.0354 H; Stator line voltage = 400 V rms. The motor for rotor speeds nm= 0 to 1500 rpm. X1= 0.1097 ohm, X2= 1.719 ohm , Xm= 11.12 ohm, RTH = 0.5853 , XTH = 0.1395 and VTH = 230.82 V. Suppose the motor...
A 100 KW (OUT PUT), 3300V, 50 Hz, 3-Phase star connected induction motor has a synchronous...
A 100 KW (OUT PUT), 3300V, 50 Hz, 3-Phase star connected induction motor has a synchronous speed of 500 rpm. The full load slip is 1.8%and full load power factor 0.85. Stator copper loss=2440W. Iron loss=3500W. Rotational losses= 1200W. calculate : The rotor copper loss The line current The full load motor efficiency.
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT