A proactive accident prevention program demands that _____.
a. appropriate inspection follow-up times are established
b. acceptable levels of risk determine all unsafe acts
c. control of hazards be reported to regulatory bodies
d. hazards be identified before they become an accident
d. hazards be identified before they become an accident
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PROBLEM 3.101
A 3-ft-long solid shaft has a diameter of 2.5 in. and is made of a mild steel that is assumed to be elastoplastic with and Determine the torque required to twist the shaft through an angle of (a) 2.5?, (b) 5?.
A _____ consists of two individual U-joints connected by a centering socket yoke and a center yoke that functions like a ball and socket.
A. single Cardan Universal joint B. double Cardan Universal joint C. CV joint D. drive shaft
Which one of the following is NOT one of the advantages that control systems offer?
A) Improved cost to performance ratio B) Control of a system at a distance from the point where the change takes place C) Control of a large power source from a smaller power control device D) Inexpensive and easy to operate devices are used to change complex process variables E) Compensation and correction for disturbances to the process system
A solenoid uses two coils. Their windings are called:
a push-in and pull-out. b. pull-in and push-out. c. push-in and hold-out. d. pull-in and hold-in.