815 - Basic Hydraulic Theory

Pascal's Law states that pressure applied to a body of a confined liquid is transmitted ____.

• equally in opposite directions

• unequally in all directions

• equally in two directions

• equally in all directions

Pressure in a hydraulic system is measured in ____.

• pounds per square inch (PSI)

• feet per minute (FPM)

• foot pounds (FPS)

• gallons per minute (GPM)

One gallon is equal to ____.

• 1 ft³

• 231 in³

• 1728 in³

• 2.3 ft³

1 cubic foot is equal to ____.

• 1 gallon

• 231 in³

• 1728 in³

• 5.5 gallons

7.5 gallons is equal to ____.

• 231 in³

• 1 ft³

• 1258 in³

• 7.5 ft³

An alternate name for up slowdown is ____.

• up leveling

• up decceleration

• up transition

• up braking

A one-way valve that permits oil flow in one direction but blocks it in the other direction is called a(n) ____.

• check valve

• down valve

• stop valve

• relief valve

In case of power failure, the car could be moved down by using the ____.

• relief valve

• manual lowering valve

• bypass valve

• shut off valve

When an elevator is at rest on floor level, which valve(s) are open?

• check valve

• down valve

• manual lowering valve

• up valve

ASME Rule 303.4 requires a manually operated lowering valve that allows the car to be lowered at speed not exceeding ____ feet per minute.

• 5

• 10

• 20

• 50