I need an experienced tutor to solve this, please avoid using Ai model s A 1100-V, 50-Hz delta-connected induction motor has a star-connected slip-ring rotor with a phase transformation ratio of 3.8. The rotor resistance and standstill leakage reac tance are 0.012 ohm and 0.25 ohm per phase respectively. Neglecting stator impedance and magnetising current determine. (i)the rotor current at start with sliprings shorted (ii)the rotor power factor at start with slip-rings shorted (iii)the rotor current at 4% slip with slip-rings shorted (iv)the rotor power factor at 4% slip with sliprings shorted (v)the external rotor resistance per phase required to obtain a starting current of 100 A in the stator supply lines.

I need an experienced tutor to solve this, please avoid using Ai model s A 1100-V, 50-Hz delta-connected induction motor has a star-connected slip-ring rotor with a phase transformation ratio of 3.8. The rotor resistance and standstill leakage reac tance are 0.012 ohm and 0.25 ohm per phase respectively. Neglecting stator impedance and magnetising current determine. (i)the rotor current at start with sliprings shorted (ii)the rotor power factor at start with slip-rings shorted (iii)the rotor current at 4% slip with slip-rings shorted (iv)the rotor power factor at 4% slip with sliprings shorted (v)the external rotor resistance per phase required to obtain a starting current of 100 A in the stator supply lines.

Delmar's Standard Textbook Of Electricity

7th Edition

ISBN:9781337900348

Author:Stephen L. Herman

Publisher:Stephen L. Herman

Chapter35: Harmonics 916

Section: Chapter Questions

Problem 3RQ: Would a positive-rotating harmonic or a negative-rotating harmonic be more harmful to an induction...

See similar textbooks

Similar questions

Discuss the effects of rotor resistance in T-S characteristics of 3 phase induction motor.
What is the relationship between slip s) and load (Pa) in an induction motor? Please explain.
I need the answer as soon as possible
Write a summary ( point) about equivalent cricuit of three phase induction motor .
Design and develop equivalent circuit model of a single phase Induction motor with th consideration of core losses present with the parameter consideration of stator resistance R1 and reactance X1 and two rotor parameters which includes r2,x2 and magnetising reactance xm. (Illustration is required) Draw by hand please
How double field is produced in single phase induction motor? Draw the torque-speedcharacteristics.
need the solve asap
f The simplicity in construction of a single-stack VR step motor is due to.... 1. Low number of phases, 2. Low used voltage, 3. N, N, 4. Bidirectional rotation, 5- None of previous. g- The synchronous inductor motor has the ability to step when the phase windings are .............. 1. Connected in parallel, 2. Connected in series, 3. Connected in star, 4. Energized with dc, 5- None of previous. h- The speed of multiple-stack VR step motor with continuous stepping is 3.120, 4.5 5- None of previous. 60f T T Resonance conditions distort the torque/speed curve causing a Drop, 3. Ripple, 4. Fluctuation, 5- None of previous. ********** 1. 120f 2p 2. 60f 2p " in torque. 1. Increase, 2. j- The frequency of armature current in 1-phase series motor is 1. =f, 2. f, 4. Zero, 5- None of previous. (f is the supply frequency)
An 3-phase induction motor(IM) has full load slip = 0.5%. If the rotor circuit resistance is increased so that R2new =2R2old, then the slip at which the motor develops the same full load torque is=.. * ......
1.why the slip of induction motor is never zero, 2.what happens if the slip of induction motor is one, 3.what is the value of the slip for an induction motor at on load and full load
Torque-speed characteristics for three phase induction motor 4. Discuss the following (rated torque, starting torque, break down torque).
What are the various losses in an Induction motor? On what factors do they depend?