Chapter 4, Problem 4.2Q

Q3/A 8-pole, 3-phase, 50 Hz induction motor, running at 725 r.p.m, rotor is star connected its resistance and reactance 0.25 and 1.5 ohm per phase, the emf between slip rings is 100, find the rotor current per phase, power factor, synchronous speed, slip and rotor frequency

440 v, 4-pole, 3-phase, 50 Hz, star stator connected induction motor, full load speed 1425 r.p.m, rotor impedance 0.5+4.55ohm and rotor/stator ratio 0.8 calculate 1) starting torque, (2) rotor current (3) the value of external resistance to add to give maximum starting torque (4) power factor at maximum torque.

I would like to know the gear ratio and the tractive effort that a trolley must achieve with the following motor specifications: Voltage: 600 voltsSpeed: 1750 to 2300 RPMCurrent: 84 AmpsRated Power: 50-55 HP What percentage should be considered for gear efficiency, and what safe margin should be applied in these calculations? The constraints for the truck trolley are as follows:Maximum Speed: 50 MPHWeight of the Car Body: 46,000 lbs (the trolley weighs approximately 44,000 lbs)Diameter wheels: 86 inchesAdditionally, I would like to know how to plot a graph of tractive effort (in grams) versus speed (in MPH).

A scientist proposed building an EM wave as E= 6000 sin (300 x -5000t) j + 6000 sin (300 x -5000t)k andB= -0.25 sin (300 x -5000t) i + 0.25 sin (300 x -5000t) k. Explain why this is not possible and explain all the mistakes E= 6000 sin (300 x -wt) j . Find the value for w and find the magnetic field vector and the Poynting vector as afunction of x and t.

Solve this problem and show all of the work

Solve this problem and show all of the work

2. A system with unity feedback is shown below. The feed-forward transfer function is G(s), where 5 . G(S) = (+1) Sketch the root locus for the variations in the values of pi. (s+P1)s R(s) C(s) G(s)

3. The following closed-loop systems in Fig. 1 and Fig. 2 operate with a damping ratio of 0.707 (=0.707). The system in Fig. 1 does not have a PI controller, while the one in Fig. 2 does. R(s): S Gain Plant R(s) + E(s) 1 C(s) K (s+1)(s+2)(s+10) Fig. 1: Closed-loop system without PI controller Compensator Plant R(s) + E(s) K(s+0.1) S 1 (s+1)(s+2)(s+10) C(s) Fig. 2: Closed-loop system with a practical PI controller a. Please use Matlab to find the intersection point between line and the root locus of the system in Fig. 1. Then find the K value and one complex closed-loop pole corresponding to the intersection point. Calculate the steady-state error. Show the Matlab code in your answer sheet. b. Please use Matlab to find the intersection point between § line and the root locus of the system in Fig. 2. Then find the K value and one complex closed-loop pole associated with the intersection point. Compare the complex closed-loop pole with the one you just found in task a. Are they very…

1. Please draw the root locus by hand for the following closed-loop system, where G(s) = s+6 = S-2 s+8 s-2' and H(s) = Find the range of K for stability using Method II in Examples 2 and 3 in Lecture 15. Input R(s) Output C(s) KG(s) H(s)