Identify the type of motion, also known as straight-line motion, used for the feed control of some machine tools when it is required for the follower to rise and fall at a uniform rate, and is only used at slow speeds because of the abrupt change at the beginning and end of the motion period.
What will be an ideal response?
Constant velocity motion.
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The situation in Kansas in the mid-1850s indicated the impracticality of ____ in the territories.
A. abolitionism B. free soil C. popular sovereignty D. slavery E. cotton growing
Technician A says that sunlight striking CFC molecules can cause chlorine to be released. Technician B says that chlorine atoms react with ozone to produce chlorine monoxide. Who is right?
A) A only B) B only C) Both A and B D) Neither A nor B
A relay is a device that ________
A) isolates the actuating signal from the control signal B) uses an electromagnet to open and close contacts C) has a coil to actuate some contacts that control other circuits D) all of these
Automatic expansion valves are good at maintaining a constant:
A) Temperature. B) Viscosity. C) Density. D) Flow.