Fluid Power

Which of the following describes a function of pressure?

• Overcomes the consistency of the flow

• Pumps produce flow by depressurizing the fluid

• A pump can create greater pressure at a lower flow rate, so if you restrict the flow from the pump, greater pressure will result.

• A pump can restrict pressure at lower flow rate, so if you increase the flow from the pump, greater pressure will result.

The law of conservation of energy states that energy can neither be created nor destroyed, although it can change forms. Energy not transferred to work takes the form of what kind of energy?

• kinetic

• thermal

• heat

• 3 year old

The cylinder on the right is 2 in in diameter, whereas the left cylinder is 10 in in diameter.  If you apply 10 lbs of force to the right cylinder what is the output force on the left cylinder and what is the MA of the hydraulic press?

• F out = 250 lbs
  MA = 25
• F out = 250 lbs
  MA = 0.04
• F out = 0.4 lbs
  MA = .004
• F out = 50 lbs
  MA = 5

A flow meter attached to the main line in a hydraulic system measures the flow rate at 10 gpm. The line has an inside diameter of 2 in. What is the flow velocity in the meter?

• 184 in/min
• 3.2 in/min
• 7253 in/min
• 736 in/min

What is the force required to push a 2 in. diameter cylinder to overcome 314 psi?

• 100 lbs
• 50 lbs
• 3944 lbs
• 986 lbs

A tire has a constant volume and pressure of 25 psi at 40^oF. After driving, the pressure of the tire is 30 psi. What is the new temperature of the tire?

• 103^oF
• 90^oF
• 48^oF
• 45^oF

Which is the correct type of energy transfer in fluid power physics?

• From prime mover, or input source, to an actuator, or output device

• From an actuator, or input source, to a prime mover, or output device

• From optimus prime, or input source, to megatron, or output device

• From lever, or input source, to an engine, or output device

A cylinder is filled with 50. in^3 of air at a pressure of 58 psi. The cylinder is compressed to 15. in^3. What is the resulting absolute pressure

• 242 psi

• 193 psi

• 17.4 psi

• 257 psi

What is the absolute Pressure, when a gauge measures a gas at 26 psi?

• 486 psi

• 286 psi

• 26 psi

• 40.7 psi

What is the absolute Temperature, when a thermometer measures a gas at 58^oF?

• 518^oR

• 318^oR

• 58^oR

• 72.7^oR