ELECTRIC MOTORS+CONTROLS ACTIVITIES MAN.
3rd Edition
ISBN: 9781260439380
Author: Petruzella
Publisher: MCG
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Textbook Question
Chapter 8.1, Problem 14RQ
Compare the way the resistance varies in a linear and nonlinear potentiometer.
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04)
A converter is feeding an RL load as shown in Fig. 2 with Vs = 220 V, R = 52, L = 7.5 mH,
f=1 kHz, d=0.5, and E=0 V. Calculate (a) the minimum instantaneous load current (b) the peak
instantaneous load current, (c) the maximum peak-to-peak load ripple current, (d) the average value
of load current la, (e) the rms load current lo, (f) the effective input resistance Ri seen by the source,
(g) the rms chopper current, and (h) the critical value of the load inductance for continuous load
current.
Chopper
FWD
500000
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Fig.2
LL
control systems
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Chapter 8 Solutions
ELECTRIC MOTORS+CONTROLS ACTIVITIES MAN.
Ch. 8.1 - In what way is resistance wire different from the...Ch. 8.1 - What is the trade name for the most popular type...Ch. 8.1 - Prob. 3RQCh. 8.1 - Name the three ways by which resistors are rated.Ch. 8.1 - Resistors are classified as passive devices. Why?Ch. 8.1 - Identify the type of circuit that generally...Ch. 8.1 - State two functions served by a fusible resistor.Ch. 8.1 - What advantage do film resistors have over...Ch. 8.1 - What are the two configurations for chip...Ch. 8.1 - In what way is the construction of an adjustable...
Ch. 8.1 - Compare the connection and control function of a...Ch. 8.1 - If the wiper arm of a linear potentiometer is...Ch. 8.1 - Explain how a 10-turn trim pot is adjusted.Ch. 8.1 - Compare the way the resistance varies in a linear...Ch. 8.1 - Identify the color bands for each of the following...Ch. 8.1 - A 680- resistor has a rated tolerance of 10...Ch. 8.1 - What is the color code for a 365- five-band...Ch. 8.1 - Determine the resistance value and percentage of...Ch. 8.1 - Determine the resistance value and percentage of...Ch. 8.2 - Calculate the total resistance for each of the...
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