Q4. For the control system is shown in Figure 2, by using second methodof Ziegler- Nichols, calculate the PID, PI-D and I-PD parameters andmake tuning for this parameters to get accepting response for theهندسة الكمfollowing system, then compare your results for all types controllers?R(S)KC(s)S3+4S² +11SFigure (2)

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Answered: Q4. For the control system is shown in…

Electric Motor Control

10th Edition

ISBN:9781133702818

Author:Herman

Publisher:Herman

Chapter7: Relays

Section: Chapter Questions

Problem 9SQ: What is optoisolation?

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Fill in the data for a 16-ampere electric motor, single-phase, no Code letters. a. Branch-circuit protection, non-time-delay fuses: Normal size _____________AMaximum size _____________A Switch size _____________ASwitch size _____________A b. Branch-circuit protection dual-element, time-delay fuses: Normal size _____________AMaximum size _____________A Switch size _____________ASwitch size _____________A c. Branch-circuit protection instant-trip breaker: Normal setting _____________A Maximum setting _____________A d. Branch-circuit protectioninverse time breaker: Normal rating _____________A Maximum rating _____________A e. Branch-circuit conductor size, Type THHN Ampacity _____________A f. Motor overload protection using dual-element time-delay fuses: Maximum size _____________A
Reconsider Problem 3.29. If Va,VbandVc are a negative-sequence set, how would the voltage and current relationships change? (a) If C1 is the complex positive-sequence voltage gain in Problem 3.29 and (b) if C2 is the negative sequence complex voltage gain, express the relationship between C1andC2
Explain optoisolation.
For Problem 3.18, the motor operates at full load, at 0.8 power factor leading, and at a terminal voltage of 10.45 kV. Determine (a) the voltage at bus 1, which is the generator bus, and (b) the generator and motor internal EMFs.
a. What is the ampere rating of the circuits that are provided for the small-appliance loads? _____ b. What is the minimum number of small-appliance circuits permitted by the Code? _____ c. How many small-appliance circuits are included in this residence? ____
What is a disadvantage of an autotransformer?
For the transformer in Problem 3.10. The open-circuit test with 11.5 kV applied results in a power input of 65 kW and a current of 30 A. Compute the values for GcandBm in siemens referred to the high-voltage winding. Compute the efficiency of the transformer for a load of 10 MW at 0.8 p.f. lagging at rated voltage.
Describe what is meant by sequence control.
What are interpoles, and what is their purpose?
You are working as an electrician in a large steel manufacturing plant, and you are in the process of doing preventive maintenance on a large DC generator. You have megged both the series and shunt field windings and found that each has over 10 M to ground. Your ohmmeter, however, indicates a resistance of 1.5 across terminals S1andS2. The ohmmeter indicates a resistance of 225 between terminals F1andF2. Are these readings normal for this type machine, or is there a likely problem? Explain your answer.
Consider Figure 3.25 of the text for a transformer with off-nominal turns ratio. (i) The per-unit equivalent circuit shown in part (c) contains an ideal transformer which cannot be accommodated by some computer programs. (a) True (b) False (ii) In the - circuit representation for real c in part (d), the admittance parameters Y11 and Y12 would be unequal. (a) True (b) False (iii) For complex c, can the admittance parameters be synthesized with a passive RLC circuit? (a) Yes (b) No
Referring to Figure 501, what will happen if the controller is placed in the off position from a maximum lower position? FIG. 501 Reconnecting a crane controller for different operations.

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