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單項(xiàng)選擇題

In an automation system, the effect of a control action sensed by a controller is known as （）

A.command input
B.set point signal
C.output
D.feedback

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單項(xiàng)選擇題

The value of the controlled variable, which under any fixed set of conditions the automatic controller operates to maintain, is known as （）

A.set point
B.control point
C.deviation
D.offset

單項(xiàng)選擇題

The quantity or condition which is measured and controlled is known as the （）

A.controlled variable
B.manipulated variable
C.set point
D.control point

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