Automation System
The "end-effector" of a robot:

All of these
None of these
may have a gripping action
can be an actual tool
is the robot "hand"

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Automation System
What is the difference between integral and derivative control?

derivative control does not eliminate offset error
derivative control responds to a change in the rate of change in the error signal
All of these
None of these
integral control has slower response to an error signal.

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Automation System
D/A (digital to analog) conversion:

must be fed through a filter to reproduce the original signal accurately
None of these
both (b) and (c)
results in a binary code as the final output
has to be sampled at 1/2 the highest input frequency

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