Automation System
Most continuous control actuators:

are used with standard continuous control loop
None of these
(b) and (c) above
use a 4 to 20 mA current loop input
are of the time proportioning type

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Automation System
If the transient response is under damped:

both a and b
the present overshoot is zero
None of these
steady-state will be reached faster than if the system is overdamped
the value of the output will exceed the value of the input at times during the transient period

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Automation System
In raster-scan colour monitors, colour can be intensified by:

using an in-line gun arrangement with a solid metal mesh
grouping the phosphor dots in a circular pattern
having each electron gun controlled by a composite signal
None of these
having each electron gun controlled by separate signal

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