Automation System
For a type 0 system, the steady-state:

error for a velocity input is always zero
None of these
(a) and (c)
input for acceleration input is always non-zero
error for a step input is always zero

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Automation System
Digital signals:

have a frequency measured in units of hertz
can have three possible levels
are assigned values of 1 or 0 depending on the voltage level
have a sinusoidal shape.
None of these

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Automation System
An aneroid barometer

None of these
can measure only atmospheric pressure
can be used to measure gas or liquid flow rates
measures pressure by sensing deflection of an evacuated chambers.
is very unreliable

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