Exam 13: Hydraulics

Which of the following pumps would usually be classified as non-positive displacement?

Which of the following hydraulics principles would describe how torque is transmitted through a torque converter?

How is the formula for force calculated?

Which of the following terms would properly define a hydraulic cylinder?

Which of the following would be found in a sealed vessel that was subject to a perfect vacuum?

Which of the following can be used as directional control valves?

What is the term used to describe the streamlining of flow through a hydraulic circuit?

Technician A says that in an open center circuit the hydraulic pump is rested (unloaded)when flow is not required by the actuator.Technician B says that in a closed-center circuit,the hydraulic pump runs continuously.Who is correct?

Technician A says that most hydraulic circuits use positive displacement pumps.Technician B says that pressure only results in a hydraulic circuit when some resistance to flow is provided.Who is correct?

In hydraulics,what is the machine that creates the mechanical force required to rotate a pump known as?

Which of the following hydraulic principles would best apply to the operation of a truck wet line kit?

Who's law states that when pressure is applied to a confined liquid,the force is applied to the area of containment will be uniform throughout?

What do car carrier trailers usually use to actuate several separate hydraulic circuits?

Technician A says that a single acting cylinder can have a wet side and a dry side.Technician B says that an example of a double-acting cylinder would be the ram used to raise a dump truck box.Who is correct?

Technician A says that a swashplate pump is sometimes described as a wobble plate.Technician B says that pumping action in a swashplate pump is created when the swashplate rotates.Who is correct?

Which of the following truck hydraulic systems would use an open circuit principle?

Hydraulic pressure is used in ?

Where would you most likely find a hydraulic vane pump in a heavy-duty truck?

What type of valve is often used to control the speed of an actuator?

Technician A says that accumulators are used to store potential energy in a hydraulic circuit.Technician B says that accumulators can be used to dampen shock and buffer sudden pressure rises.Who is correct?