Question

A four-pole asynchronous motor, indicates on its plate a power of 12.3 kW. It is star...

A four-pole asynchronous motor, indicates on its plate a power of 12.3 kW. It is star connected to a 60 Hz system and works at full load with a speed of 1746 rpm. Friction losses are 400 W, by Joule effect in stator 950 W and in rotor 350 W. Magnetic losses are 0.23 kW. Determine performance, synchronous speed, and slip.

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
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.
Problem 1: A 800 V, 4 pole, 3 phase, and 50 Hz star connected induction motor...
Problem 1: A 800 V, 4 pole, 3 phase, and 50 Hz star connected induction motor has a rotor resistance and reactance per phase equal to 0.02 ohm and 0.2 ohm respectively. Determine 1) starting torque 2) slip at which maximum torque will occur 3) speed at which maximum torque will occur 4) Maximum torque 5) full load torque if full load slip is 8%. Assume ratio of stator to rotor turns as 8.
A 208 V 10 Hp four pole 60 Hz Y connected induction motor has a full...
A 208 V 10 Hp four pole 60 Hz Y connected induction motor has a full load slip of 5%. What is the output power of this motor in kW? If friction and windage loss is 350 watts, what is the gross mechanical output at full load? What is the gross torque of this motor at full load? What is the rotor cupper loss at full load? If the efficiency of this motor is 90% at full load what is...
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]
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...
Question A 208 V 10 Hp four pole 60 Hz Y connected induction motor has a...
Question A 208 V 10 Hp four pole 60 Hz Y connected induction motor has a full load slip of 5%. a)-What is the synchronous speed of this motor? b)-What is the shaft speed of this motor at full load? c)-What is the frequency of rotor current at full load? d)-What is the shaft torque of this motor at full load? e)-If the efficiency of this motor is 90% at full load what is the input power f)-If the efficiency...
Problem 3: A 3-phase, 4 pole, 50 Hz induction motor is supplied by 200 V supply....
Problem 3: A 3-phase, 4 pole, 50 Hz induction motor is supplied by 200 V supply. Its full load slip is 2%. At full load, stator copper losses are same as rotor copper losses. Stator iron losses are 50% more than stator copper losses. Mechanical losses are one third of no load losses. Full load output is 50 H.P. Calculate the efficiency on full load.
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...
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
A 230 volt, 60 Hz, 4 pole star connected, three phase induction motor operates at a...
A 230 volt, 60 Hz, 4 pole star connected, three phase induction motor operates at a full load speed of 1710 rpm. The power developed at this speed is 2 horse power. If the supply voltage fluctuates ±10%, determine the torque range of the motor.
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT