EBK 3N3-EBK: INDUSTRIAL MOTOR CONTROL
7th Edition
ISBN: 9780176919962
Author: Herman
Publisher: VST
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Chapter 52, Problem 5RQ
When connecting TTL logic, why are inputs pulled high instead of low?
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motor supplies 200 kW at 6 Hz to flange A of the shaft shown in Figure. Gear B transfers 125 W of power to operating machinery in the factory, and the remaining power in the shaft is mansferred by gear D. Shafts (1) and (2) are solid aluminum (G = 28 GPa) shafts that have the same diameter and an allowable shear stress of t= 40 MPa. Shaft (3) is a solid steel (G = 80 GPa) shaft with an allowable shear stress of t = 55 MPa. Determine:
a) the minimum permissible diameter for aluminum shafts (1) and (2)
b) the minimum permissible diameter for steel shaft (3).
c) the rotation angle of gear D with respect to flange A if the shafts have the minimum permissible diameters as determined in (a) and (b).
Chapter 52 Solutions
EBK 3N3-EBK: INDUSTRIAL MOTOR CONTROL
Ch. 52 - In a relay circuit, what function is served by the...Ch. 52 - Prob. 2RQCh. 52 - What conditions of input must exist if an OR gate...Ch. 52 - What conditions of input must exist if an AND gate...Ch. 52 - When connecting TTL logic, why are inputs pulled...Ch. 52 - Prob. 6RQCh. 52 - Referring to Figure 52–12, what function does the...
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