revolving buoy.  a. venturi meter b. orifice c. pitot tube  d. rotameter

Pipes/ Pump System Why are ball valves not as useful for throttling flow other as other valves types?

What is the function of a pilot-to-close check valve in a pneumatic system? A. Allows flow in reverse direction but to foward B. Blocks flow in reverse direction but not forward C. Allows flow in either direction D. Blocks flow in either direction Allows flow in reverse direction but not forward. Blocks flow in reverse direction but not forward. Allows flow in either direction. Blocks flow in either direction.

Which of the following is NOT one of the four criteria by which the size of a hydraulic reservoir is determined? O Its inner surface must be covered with a layer of stainless steel to avoid corrosion It must have a surface area large enough to dissipate heat It must maintain oil level high enough to prevent a whirlpool effect at the pump inlet It must make allowance for dirt and chips to settle and air to escape