Question

8) The motor model for a 3-phase 480V 1750 RPM induction motor is shown below. Stray losses are 1000W. Assuming it is running

0 0
Add a comment Improve this question Transcribed image text
Answer #1

page) Soluton Ann 0:01 j0.14 ve jo.14 0.01 V: 480 3116 в с- to full Load Speed 1450 RPM fi = 60H3 (for united State) 1750 = 1page2 (page 2 ZA = 0.017 j0.14 + 0.0% + jo.14) (16) 0.028 .. pan756744) 03357 +32.140 = 0.01+00.14+(-2.24 +5.7149) 0.357 +3.2(pages) o magnetization Current Ty: Ne j16 = 274.72 10:035 16/90* = 17.17 |-89.965 © air gap power (7) Pg=m IRF = 3x (979.25*o Terminal voltageV= 480 page) () Input power factor Stater current I, = 975.25|-48.58 power factor = cos 48.58 = 0.66 L99

Add a comment
Know the answer?
Add Answer to:
8) The motor model for a 3-phase 480V 1750 RPM induction motor is shown below. Stray...
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. Our experts will answer your question WITHIN MINUTES for Free.
Similar Homework Help Questions
  • The input power to a 480V, 3 phase, 6 pole, 50 Hz induction motor is 75kW...

    The input power to a 480V, 3 phase, 6 pole, 50 Hz induction motor is 75kW with a line current of 75A and runs at a slip of 2.5%. If the stator core loss is 2 kW, windage and friction loss is 1.2 kW, and the stator resistance per phase is 0.16 ohm. Calculate: a. Power supplied to the rotor (Air gap power) b. Rotor copper loss c. Shaft power d. Efficiency of the motor e. Shaft torque f What...

  • 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

  • 5 Marks) A 4-pole, 3 phase, 50 Hz, 230 V induction motor. Each phase of rotor winding b) has one-fourth the number of t...

    5 Marks) A 4-pole, 3 phase, 50 Hz, 230 V induction motor. Each phase of rotor winding b) has one-fourth the number of turns of each stator. The full-load speed is 1,455 rpm. The rotor resistance is 0.3 Ω and rotor standstill reactance is 1.0 Ω per phase. The rotor and stator windings are similar. Stator losses are equal to 50 Watts. Friction and windage losses are equal to 30 W. Calculate ) Blocked rotor voltage per phase. 2 Marks)...

  • 4. A 3-phase, 340 V, Induction motor is supplied with 60 A at .85 pf lagging....

    4. A 3-phase, 340 V, Induction motor is supplied with 60 A at .85 pf lagging. Its stator and rotor copper losses are 4000 W and 800 W respectively, while its core losses are 2000 W, and its Friction, Windage and Stray losses are a combined 750 W. Determine: a. Draw a diagram depicting the energy flow in the motor (Similar to the one we had drawn in class) b The air gap power c. The mechanical power developed d....

  • A three-phase 60 Hz induction motor 480 v (rms, line- to line), lo tp, spee is...

    A three-phase 60 Hz induction motor 480 v (rms, line- to line), lo tp, spee is 12 amperes (rms), total stator Copper loss is Copper loss is 150 W, total combine with operation at the specified paramders, a) The number of Poles ! induction motor has specifications as follows R- to line), lo tp, speed is 1765 RPM, line Current stal Stator Copper loss is 140 w, total rotor is 15o W , total combined rotational loss is losw the...

  • Question 3. (25 Marks) Parameters of a three-phase, 400 v, 50 Hz, 4-pole, star-connected induction motor...

    Question 3. (25 Marks) Parameters of a three-phase, 400 v, 50 Hz, 4-pole, star-connected induction motor are as follows: bl The sum of friction, windage and stray losses are 0.15 kW. The motor is running at 1440 rpm. (a) Calculate the input line current (b) Calculate the stator copper loss and rotor copper loss. (c) Calculate the output power and efficiency.

  • A 3 phase, 440 V, 6 pole, 970 rpm, 50 Hz, Y-connected induction motor has the...

    A 3 phase, 440 V, 6 pole, 970 rpm, 50 Hz, Y-connected induction motor has the following parameters referred to the stator Rs = 0.2 Ω, Rr'一0.15 Ω, xs-x-= 0.4 Ω The stator to rotor turns ratio is 3.5 The motor speed is controled by the Static Scherbius Drive. The drive is designed for a speed range of 30% below the synchronous speed. The maximum value of firing angle is 170'. Calculate (i) Turns ratio of the transformer (ii) Torque...

  • 4. A 3-phase, 340 V, Induction motor is supplied with 60 A at.85 pf lagging. Its...

    4. A 3-phase, 340 V, Induction motor is supplied with 60 A at.85 pf lagging. Its stator and rotor copper losses are 4000 W and 800 W respectively, while its core losses are 2000 W, and its Friction, Windage and Stray losses are a combined 750 W. Determine: a. Draw a diagram depicting the energy flow in the motor (Similar to the one we had drawn in class) b The air gap power c. The mechanical power developed d. The...

  • 4. A three-phase induction motor has the following data: Nominal power, P 7.5 kW Nominal voltage, = 400 V Connection: Y Nominal frequency, f-50 Hz Nominal speed, nn 960 rpm Stator resistance, r,...

    4. A three-phase induction motor has the following data: Nominal power, P 7.5 kW Nominal voltage, = 400 V Connection: Y Nominal frequency, f-50 Hz Nominal speed, nn 960 rpm Stator resistance, r, 0.55 Ω Rotor resistance referred to a stator winding phase: r:-0.51 Ω Stator leakage inductance, L,-4.4 mH Rotor leakage inductance referred to a stator winding phase,1'-4.4 mH Magnetising inductance L-65 mH How many pole pairs has the motor? 12] a. Calculate the nominal power factor of the...

  • The equivalent circuit parameters of a 440 V, 3-phase, 8-poles, and 50 Hz star connected motor (HELP)

    Question: The equivalent circuit parameters of a 440 V, 3-phase, 8-poles, and 50 Hz star connected motor are given below. The short-circuit test is conducted with a locked rotor and a line current of 80 A. The open-circuit test is conducted by supplying the stator winding at rated voltage and at the same time driving the rotor in the same direction as the rotating field, at synchronous speed; s=0.R1 = 0.1, X1 = 0.5, RI2 = 0.1, XI2 = 0.5, Xm = 20, Rm = 100...

ADVERTISEMENT
Free Homework Help App
Download From Google Play
Scan Your Homework
to Get Instant Free Answers
Need Online Homework Help?
Ask a Question
Get Answers For Free
Most questions answered within 3 hours.
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT