induction machine Three phase induction motor MCQ | Electrical Machine question and answers Ahmed Amin 1) WHEN A THREE PH ASE INDUCTION MOTOR IS ROTATING AT STEADY STATE. THEN IF THE LOAD IS INCREASED THEN THE SLIP WILL…….. AND THE EFFICIENCY ... اقرأ المزيد
induction machine Electrical Machine MCQ | practical training (Machine and protection MCQ) Ahmed Amin press crtl + F to find any question you search for if you dont found it - comment with it and we will add its answer to the article 1. ... اقرأ المزيد
induction machine A460-V. 30-hp. 60-Hz. four-pole. Star-connected induction motor has two possible rotor designs. a single-cage rotor and a double-cage rotor. (The stator is identical for either rotor design.) The motor with the single-cage rotor may be modeled by the following impedances in ohms per phase referred to the stator circuit: R1= 0.641 Ω X1 = 0.750 Ω R2 = 0.3 Ω X2 = 0.5 Ω Xm= 26.3 Ω The motor with the double-cage rotor may be modeled as a tightly coupled. High resistance outer cage in parallel with a loosely coupled. Low resistance inner cage The stator and magnetization resistance and reactances will be identical with those in the single-cage design. The resistance and reactance of the rotor outer cage are: R2o, = 3.2 Ω X2o, = 0.5 Ω The resistance and reactance of the inner cage are R2i = 0.4 Ω X2i = 3.3 Ω Write a MATLAB script to calculate and plot the two torque-speed characteristics with the two rotor designs. How do they compare? Ahmed Amin A460-V. 30-hp. 60-Hz. four-pole. Star-connected induction motor has two possible rotor designs. a single-cage rotor and a double-cage rotor... اقرأ المزيد