Electric Motor Control
10th Edition
ISBN: 9781133702818
Author: Herman
Publisher: CENGAGE L
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Chapter 48, Problem 8SQ
To determine
Find the alternate methods for stopping the motor which is provided in the circuit in Figure 48-4.
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Q3 01: Required Handwritten Answer with explanation , Dont send Ai Answers , Straight Forward will be Reported to team & a detailed review will be done against that tutor for wasting the students time.
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A periodic signal whose period is given by x(t) = Δ(t/τ), where τ = 1/20. The signal x(t) is band-limited by an ideal analog low-pass filter with a cutoff frequency fc.
The signal x(t), ideally sampled at a rate of 80 Hz, is reconstructed using an ideal low-pass filter with a cutoff frequency of 40 Hz, resulting in the signal y(t).
a) Plot the spectrum of y(t) if fc = 40 Hzb) Plot the spectrum of y(t) if fc = 20 Hz
Chapter 48 Solutions
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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- Q1 Q2 03 Find the total steel reinforcement (As) and the number of 20 mm bars that must be spread along the long direction of rectangular concrete footing of width B-2.10m which supports concrete column dimensions (0.4x 0.4) m. Given: D.L-900kN, L.L-800KN, qall-185kN/m², fc-21MPa, fy-400MPa. 300 450 Answer the following: A-Compare between the plate load test and standard penetration test, B-Define the disturbed samples, C- Find the depth of borehole for this case. B-2m. Dr=1.5m and qs =18ton/ m². The SPT records Versus depth are given in table below. Find qan for the raft foundation with B x B=10x10m and Df=2m, the allowable settlement is 50mm. 95 13 18 25arrow_forwardProject Statement A. It is required to introduce an additional load to cause maximum power transfer from the circuit below at the terminals a and b. The parallel loads resistances already connected are 50 Ω, 40 Ω, 30 Ω, 20 Ω, 10 Ω. 10 A 30022 w 8 Ω 5.2 Ω w w a + 500 V 12 Ω B. The circuit below is connected for long time to the terminal a and b of the circuit above after witch the switch is disconnected to allow the inductance system to discharge its stored energy. Determine the discharge current each τ and for 20 t and plot the current discharge behaviour. a 7 H 100 Ω 8 H 6H 10 H b C. Modify the 100 2 resistor or the inductor setup or both resistor and inductor setup to force the discharge current to be at least three times slower than in case B during the discharge. Your report must show the design steps and calculation then the relevant plots.arrow_forwardDraw the spectrum at the intermediate points and at the output of the cascaded systems. The input is x(t) = 6sinc(6t). The sampler operates at S = 12 Hz and performs ideal sampling. The cutoff frequency of the ideal low-pass filter is 5 Hz. X(t) → Sampler → Ideal Low-Pass Filter → Y(t)arrow_forward
- The signal x(t) is band-limited to 40 Hz and is modulated with a 320 Hz carrier, which generates y(t). This signal is then processed by a quadratic-law device that produces the output g(t) = y²(t). a) What is the minimum sampling rate for x(t) that avoids aliasing?b) What is the minimum sampling rate for y(t) that avoids aliasing?c) What is the minimum sampling rate for g(t) that avoids aliasing?arrow_forward1) Applying the bit mask to toggle the bits in positions 0 through 3 of the register AL, while passing through the bits in positions 7 through 4.What is the binary value of the AL after performing the following two instructions?MOV AL, 10111011 B;XOR AL, mask;arrow_forwardNeed a soluarrow_forward
- According to the book the answers are (а) 2.98 × 10-9 (b) 1.49 × 10-9arrow_forwardInstruction's: Q1: Required Handwritten Answer with explanation , Dont send Ai Answers , Straight Forward will be Reported to team & a detailed review will be done against that tutor for wasting the students time.arrow_forwardDon't use ai to answer I will report you answerarrow_forward
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