單項(xiàng)選擇題

Restrictions occurring in the small orifices of pneumatic control system components can be used by （）

A.moisture in the compressed air supply
B.excessive dryness in the compressed air supply
C.pressure surging in the compressed air receiver
D.insufficient lubrication of the system components

你可能感興趣的試題

單項(xiàng)選擇題

In a pneumatic automation system, a unit producing a signal to govern the position of the controller of the measured variable, relative to the value of the measured variable, is said to have（）.

A.reset action
B.proportional action
C.two position action
D.rate action

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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Restrictions occurring in the small orifices of pneumatic control system components can be used by （）

你可能感興趣的試題

In a pneumatic automation system, a unit producing a signal to govern the position of the controller of the measured variable, relative to the value of the measured variable, is said to have（）.

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