Find the duty ratio and neglecting friction and windage, Electrical Engineering

Assignment Help:

A 440-V, 60-Hz, six-pole, wye-connected, wound-rotor induction motor with a full-load speed of 1170 r/min has the following per-phase parameters referred to the stator:R1 = R'2 = 0.5, Xl1 = Xl2 = 2 , Xm = 40 , and a stator-to-rotor turns ratio of 2.5.

The scheme of Figure is employed for speed control with Rd = 0.02 and R = 1. For a speed of 1000 r/min at 1.5 times the rated torque, find the duty ratio δ, neglecting friction and windage, and using the equivalent circuit with jXm moved adjacent to the stator terminals.

635_Slip-power controlled wound-rotor induction-motor drives.png


Related Discussions:- Find the duty ratio and neglecting friction and windage

Activities to preparing long-term plans, Activities to Preparing Long-term ...

Activities to Preparing Long-term Plans 1. Data collection regarding existing loads, forecast of expected loads, operating conditions, and etc. from Grid substation up to cons

Actual loading method, Actual Loading Method This method is employed c...

Actual Loading Method This method is employed commonly for testing of single phase meters within laboratory. On a meter testing bench that is equipped along with several taps

Jfet, JFET The JFET (junction gate field-effect transistor) is a ...

JFET The JFET (junction gate field-effect transistor) is a long channel of semiconductor material, doped to consist of abundance of positive charge carriers (p-type), or

Resultant force, State and prove parallelogram law of forces and explain i...

State and prove parallelogram law of forces and explain it''s applications

Parabola by offset method, how many points are required to make an parabola...

how many points are required to make an parabola in offset method when vertical point has 4 points

Determine the modulation index, An angle-modulated signal has the form u(t)...

An angle-modulated signal has the form u(t) = 100 cos [2πf c t+4 sin 2πf m t ],where f c =10MHz and f m = 1 kHz. Determine the modulation index β f or β p and the transmitted s

What do you understand by common control, Q. What do you understand by comm...

Q. What do you understand by common control? In some switching systems, control subsystem may be an integral part of switching network itself. Such system iscalled direct contr

Junctions and diodes, An intrinsic semiconductor at room temperature has fr...

An intrinsic semiconductor at room temperature has free electrons

determine the minimum dandwidth of the system - fsk and ask, 1. Data is to...

1. Data is to be transmitted using a modem at 9600 bps. Determine the minimum bandwidth of the system with the following modulation methods (a) FSK (b) ASK. Use the excess

Engineering design, following on from the first tma in this module, produce...

following on from the first tma in this module, produce a design report for one design of the product based on one of the scenarios covered on the following pages.

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd