Electric Motor Control
10th Edition
ISBN: 9781133702818
Author: Herman
Publisher: CENGAGE L
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Chapter 39, Problem 12SQ
To determine
Choose the correct option to find the location of the armortisseur windings.
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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 39 Solutions
Electric Motor Control
Ch. 39 - Prob. 1SQCh. 39 - What is the effect of the starting winding of the...Ch. 39 - What are typical applications of synchronous...Ch. 39 - Prob. 4SQCh. 39 - A loaded synchronous motor cannot operate...Ch. 39 - Why must a discharge resistor be connected in the...Ch. 39 - Depending on their power factor ratings, what is...Ch. 39 - At what power factor do incandescent lights...Ch. 39 - Prob. 9SQCh. 39 - The speed of a synchronous motor is fixed by the...
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