Electric Motor Control
10th Edition
ISBN: 9781133702818
Author: Herman
Publisher: CENGAGE L
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Textbook Question
Chapter 36, Problem 9SQ
Why is it necessary to remove the jumpers in Figure 36–2 if limit switches are used?
FIG. 36–2 Typical elementary diagram of a starter with two points of acceleration for a reversing wound rotor motor.
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Q1) [60p] Given the following message and carrier signal
m(t) = cos 2000nt + 2cos 6000лt + cos 10000πt
c(t) = 20 cos 320000πt
The signal is passed through following nonlinear device and a subsequent filter to generate
DSB-AM signal. The nonlinear device has the input-output relation y(t) = x²(t) + 10x(t).
y(t)
u(t)
m(t).
Non-Linear
Device
Filter
c(t)
a) Determine y(t).
b) Determine type of filter (BPF, HPF, LPF) and the bandwidth to obtain a DSB-AM
signal (Conventional AM)
c) What is the modulation index?
d) Determine power of m(t), u(t), and the ratio of power in side bands to carrier.
e) Assume that modulation signal u(t) is going to be demodulated by an envelope
detector. The resistor is selected as R = 1 K. What is the minimum and maximum
value of capacitor for a good detector.
Q2) [40p] Given the following message and carrier signal
m(t) = cos 2000πt + 2cos 6000πt + cos 10000πt
c(t) 20 cos 320000лt
a) Determine the Hilbert transform of m(t).
b) Determine the Single Side Band (SSB)…
Answer Q3 plz use By HAND AND SHOW ME STEP BY STEP I need expert i don't want Ai plz us by hand
Chapter 36 Solutions
Electric Motor Control
Ch. 36 - Are the secondary resistors connected in three...Ch. 36 - Do secondary resistors on starters with three or...Ch. 36 - Does reversing the secondary rotor leads mean that...Ch. 36 - If one of the secondary resistor contacts (S2)...Ch. 36 - In Figure 362, how many different interlocking...Ch. 36 - Referring to Figure 364, why is it not possible to...Ch. 36 - Prob. 7SQCh. 36 - If there is a locked rotor in the secondary...Ch. 36 - Why is it necessary to remove the jumpers in...Ch. 36 - Prob. 10SQ
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