Question

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

Homework Answers

Answer #1

Thank you. I have done all the steps for efficiency of motor at full load. The efficiency of motor is 94.94%. Please like the answer ASAP.

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
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 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]
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 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 4: A 6 pole, three phase, 50 Hz induction motor has rotor resistance of 0.075...
Problem 4: A 6 pole, three phase, 50 Hz induction motor has rotor resistance of 0.075 ohm and standstill reactance of 0.125 ohm per phase. On full load it is running at a speed of 240 r.p.m. The rotor induced e.m.f per phase at standstill is observed to be 16 V. Calculate; Starting torque, Full load torque Maximum torque Speed at max torque Problem 5: The following data refers to a 10-pole, 200 V, 50 Hz, 3 phase induction motor?
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 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...
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...
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...
Calculate full load torque developed by an 8 pole, 50 Hz, 3 phase IM Motor operating...
Calculate full load torque developed by an 8 pole, 50 Hz, 3 phase IM Motor operating with 4 % slip on full load. Motor develops Max. Torque at a speed of 700rpm. The rotor resistance of motor is 0.5 ohm per phase. Standstill rotor emf is 120v per phase.
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT