If P is pressure difference, A is area of each flat surface, K is stiffness and x is displacement of movable surface from reference of bellows, then

If P is pressure difference, A is area of each flat surface, K is sti

1.	If P is pressure difference, A is area of each flat surface, K is stiffness and x is displacement of movable surface from reference of bellows, then
A.	<img src="/_files/images/electronics-and-communication-engineering/automatic-control-systems/31-327-1.png">
B.	<img src="/_files/images/electronics-and-communication-engineering/automatic-control-systems/31-327-2.png">
C.	<img src="/_files/images/electronics-and-communication-engineering/automatic-control-systems/31-327-3.png">
D.	<img src="/_files/images/electronics-and-communication-engineering/automatic-control-systems/31-327-4.png">
Answer» D. <img src="/_files/images/electronics-and-communication-engineering/automatic-control-systems/31-327-4.png">