INDUSTRIAL MOTOR CONTROL
7th Edition
ISBN: 9780357670590
Author: Herman
Publisher: CENGAGE L
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Question
Chapter 34, Problem 1RQ
To determine
The electric component which is used to convert the AC voltage to DC voltage in large DC motor controllers.
Expert Solution & Answer
Explanation of Solution
The device which is used to convert the electrical energy into
In large DC controller motors, SCR (silicon controlled rectifier) is used to convert the AC voltage into DC voltage.
Thus, the electric component which is used to convert the AC voltage to DC voltage in large DC motor controllers is SCR.
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The parabolic cable running between the two transmission towers is carrying a uniformly distributed load of 15 kN/m over a span of L = 20 m with a sag of y = 5 m. The left end of the cable is connected at point F as shown in the spot detail. The protruding members of the transmission tower is to be analyzed assuming pin connection at joints A and K. Given: a = 1.2 m, b = 0.8 m, c = 1.0 m, d = 0.6 m, and e = 0.3 m. Calculate the following with complete fbd: indicate if in compression or tension on the membersa. Maximum and minimum tension of the cable, in kN.b. Length of the cable, in m.
Chapter 34 Solutions
INDUSTRIAL MOTOR CONTROL
Ch. 34 - Prob. 1RQCh. 34 - Why is this component used instead of a diode?Ch. 34 - What is a freewheeling or kickback diode?Ch. 34 - Name two methods of sensing the current flow...Ch. 34 - Prob. 5RQCh. 34 - What unit controls the voltage applied to the...Ch. 34 - What device is often used to sense motor speed?
Ch. 34 - Prob. 8RQ
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