EBK ELECTRIC MOTOR CONTROL
10th Edition
ISBN: 9780100784598
Author: Herman
Publisher: YUZU
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Chapter 48, Problem 4SQ
To determine
Mention the preferred method of the plugging switch connection to the motor or the driven machine.
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Chapter 48 Solutions
EBK ELECTRIC MOTOR CONTROL
Ch. 48 - In Figure 482, what is the purpose of normally...Ch. 48 - Can a time-delay relay be used satisfactorily in a...Ch. 48 - Prob. 3SQCh. 48 - Prob. 4SQCh. 48 - Prob. 5SQCh. 48 - What is the purpose of the lockout relay or safety...Ch. 48 - What happens if the reverse push button is closed...Ch. 48 - Prob. 8SQCh. 48 - Prob. 9SQCh. 48 - In Figure 487, is it necessary to push the stop...
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- If the voltage waveform in Fig. 6.68 is applied to a 50-mH inductor, find the inductor current i(1). Assume i(0) = 0.arrow_forwardQ3/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 frequencyarrow_forward440 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.arrow_forward
- 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).arrow_forwardA 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.arrow_forwardSolve this problem and show all of the workarrow_forward
- Solve this problem and show all of the workarrow_forward2. 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)arrow_forward3. 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…arrow_forward
- 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)arrow_forward9-1) Lathi & Ding, Prob. P.5.1-10 (a) A first-order-hold circuit can also be used to reconstruct a signal g(t) from its samples. The impulse response of this circuit is h(t) = A ( 2Ts 12 where Ts is the sampling interval. Consider a typical sampled signal ğ(t) and show that this circuit performs the linear interpolation. In other words, the filter output consists of sample tops connected by straight-line segments. Follow the procedure discussed in Sec. 5.1.2 (Fig. 5.6) for a typical signal g(t). (b) Determine the transfer function of this filter and its amplitude response, and compare it with the ideal filter required for signal reconstruction.arrow_forwardI have this rough circuit diagram of a 2 double end trolley light system with a 120 dcv power supply. I would like to know in what way is better to connect the interior lights along with the headlight and door light. Provide the circuit diagram and with its respect connection and the estimated total power rated for the lights. Where: Headlights (2) = #1 and #6Door lights (4) = #2, #4, #5, and #7Platform lights (2) = #3 and #8Interior lights are approximately 20 in quantity. Also, can you say if the components that are in series with the power supply are correct or does it need to be replaced with something else or if it is missing any components.arrow_forward
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