Electric Motor Control
10th Edition
ISBN: 9781133702818
Author: Herman
Publisher: CENGAGE L
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Chapter 29, Problem 2SQ
What is the principal reason for using star-delta motors?
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5.7 Design an STS switch for 128 primary TDM signals of the CCITT hierarchy (30
voice channels per input). Blocking should be less than 0.002 and the loading is
0.2 erlang per channel. How many time slot interchange modules are needed?
What is the complexity of the switch?
Repeat Problem 5.7 for a TST design.
Need a solution please according to the book the answers are , number of memory bits is 48000 and complexity is 1504
For the single-line diagram in the image, convert the zero-, positive-, and negative-sequence reactance date to per-unit using the given base quantities. Use subtransient machine reactances.Then, USE PowerWorld Simulator, create the generator, transmission line, and transformer input data files.Next, run the Simulator to compute subtransient fault currents for (1) single line-to-ground, (2) line-to-line, and (3) double line-to-ground bolted faults at each bus. Assume 1.0 per unit prefault voltage and neglect prefault load currents and all losses. Note: L2 = 25 kmShow input data files (machine, transmission line and transformers), output data (fault currents, bus volatges and line currents), and screenshots of the Simulation.
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- A. The ECG signal of a person shows an irregular heartbeat of 180 beats per minute. You areasked to come up with a system that digitises this signal, using an analog-to-digitalconverter (ADC) with a reference voltage of 5 V. The digitised signal should have a resolutionof 1 mV or better.i) How many samples per second should your system take in order to fully capture the ECGsignal?ii) What should the ADC’s resolution in bits be? Alternatively, how many quantisation levelsshould the ADC have; or how many bits per sample should the ADC have? B. You have successfully designed your ECG signal capture device. However, the person fromQuestion A is being examined in a room with fluorescent lights which have recently startedbuzzing. The digitised ECG signal appears to be very noisy, and the medical doctors arefinding it difficult to diagnose the patient. You suspect interference from the electrical mainsis to blame.You also notice that the ECG signal is very faint and not making full use of…arrow_forwardControls Systemsarrow_forwardQuestion about Controls Systemsarrow_forward
- A chemical processing plant requires a simplified safety control system to monitor critical conditions in one of its reactors. The system must evaluate three key parameters and activate two response levels. A combinational circuit with 3 sensors and 2 alarms needs to be designed for this purpose. Sensors: A: Reactor temperature (0 = normal, 1 = high) B: Reactor pressure (0 = normal, 1 = high) C: Mixture pH level (0 = normal, 1 = out of range) Alarms: X: Warning alarm Y: Activation of the emergency shutdown system System requirements: 1. The warning alarm (X) should activate when: At least two parameters are out of range. • Or when the temperature is high (A = 1) and any other parameter is out of range. 2. The emergency shutdown system (Y) must activate when: • All parameters are out of range simultaneously (A = 1, B = 1, C=1). • Or when the temperature and pressure are high simultaneously (A = 1 and B = 1), regardless of the pH level. Request: 1. Design the logic circuit for this…arrow_forwardAn industrial soft drink production plant needs to implement a quality control system for its bottling line. The system must monitor four critical parameters and activate different alarms depending on the conditions detected. It is required to design a digital circuit with 4 inputs and 3 outputs for this purpose. Inputs: A: Carbonation level (0 = normal, 1 = high) B: Liquid temperature (0 = normal, 1 = elevated) C: Line pressure (0 = normal, 1 = low) D: Filling speed (0 = normal, 1 = low) Outputs: X: Minor adjustment alarm (triggered when an odd number of parameters are out of range) Y: Major revision alarm (triggered when at least three parameters are out of range) Z: Adjacent parameters alarm (triggered when exactly two adjacent parameters are out of range System requirements: 1. The minor adjustment alarm (X) should activate when an odd number of parameters are out of range, indicating the need to make minor adjustments to the process. 2. The major overhaul alarm (Y) should activate…arrow_forwardPlease I need accurate answers , according to thr book the answers for STS part are (a) 41 , (b) 10828arrow_forward
- An industrial soft drink production plant needs to implement a quality control system for its bottling line. The system must monitor four critical parameters and activate different alarms depending on the conditions detected. Design a digital circuit with 4 inputs and 3 outputs for this purpose, Design the logic circuit for this control system using Karnaugh maps to simplify the Boolean functions of each output. The final design must be efficient and use as few logic gates as possible. Inputs: A: Carbonation level (0 = normal, 1 = high) B: Liquid temperature (0 = normal, 1 = elevated) C: Line pressure (0 = normal, 1 = low) D: Filling speed (0 = normal, 1 = low) Outputs: X: Minor adjustment alarm (triggered when an odd number of parameters are out of range) Y: Major revision alarm (triggered when at least three parameters are out of range) Z: Adjacent parameters alarm (triggered when exactly two adjacent parameters are out of range)arrow_forwardPlease solve it for STS and TSTarrow_forwardQ3) The ECL circuit as shown in fig. 3 has: (VBE (ECL) = 0.75V, B = 99, VBC (sat) = 0.6V And VOH(min) (VOH - 0.04), determine:- 1. The dissipation power (avg.). 2. The IoH and IiH when excluding red-colored components. (12 Marks) NG RCIB RCIA RCR QBO 100 100 112 LoVo ALQIA QR1 0 QR2 QIB VBB -1,31 REA 365 VEE 365 REB ¥ 5.2arrow_forward
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