BASIC HYDRAULICS TEST FULLY SOLVED 2025 #11
The ability of a fluid to penetrate into small clearances between closely fitted parts is
determined by the fluid's - correct answer Viscosity
The overall efficiency of a hydraulic motor is defined as the - correct answer Output
horsepower divided by the fluid input
Which of the following kinds of valves should be used in a hydraulic system to change
the direction of motion of the cylinder? - correct answer Directional control valve
Peak hydraulic system demands are usually met by the use of a(n) - correct answer
Accumulator
The flow rate of hydraulic fluid through piping or tubing is measured in - correct answer
gpm
According to Bernoulli's Principle, when fluid flow increases in a system, the pressure -
correct answer Decreases
Pressure is measured in __________ in the English system - correct answer Pounds
per square inch
The force exerted by a double-acting piston is - correct answer Less on the rod side
Mechanical shock is controlled in a hydraulic cylinder by means of a - correct answer
Cushioning device
Which of the following is NOT needed in order to calculate the work a hydraulic cylinder
can do? - correct answer Power
A hydraulic fluid the exhibits little change in viscosity when heated is said to have a high
- correct answer viscosity index
A hydraulic fluid must be able to do all of the following EXCEPT - correct answer
Compress easily
A meter-out flow-control valve is used to regulate fluid flow from a(n) - correct answer
Actuator
The best method of controlling hydraulic fluid contamination is the use of - correct
answer Good maintenance procedures
An air breather is installed on a fluid reservoir to - correct answer Vent the reservoir
The ability of a fluid to penetrate into small clearances between closely fitted parts is
determined by the fluid's - correct answer Viscosity
The overall efficiency of a hydraulic motor is defined as the - correct answer Output
horsepower divided by the fluid input
Which of the following kinds of valves should be used in a hydraulic system to change
the direction of motion of the cylinder? - correct answer Directional control valve
Peak hydraulic system demands are usually met by the use of a(n) - correct answer
Accumulator
The flow rate of hydraulic fluid through piping or tubing is measured in - correct answer
gpm
According to Bernoulli's Principle, when fluid flow increases in a system, the pressure -
correct answer Decreases
Pressure is measured in __________ in the English system - correct answer Pounds
per square inch
The force exerted by a double-acting piston is - correct answer Less on the rod side
Mechanical shock is controlled in a hydraulic cylinder by means of a - correct answer
Cushioning device
Which of the following is NOT needed in order to calculate the work a hydraulic cylinder
can do? - correct answer Power
A hydraulic fluid the exhibits little change in viscosity when heated is said to have a high
- correct answer viscosity index
A hydraulic fluid must be able to do all of the following EXCEPT - correct answer
Compress easily
A meter-out flow-control valve is used to regulate fluid flow from a(n) - correct answer
Actuator
The best method of controlling hydraulic fluid contamination is the use of - correct
answer Good maintenance procedures
An air breather is installed on a fluid reservoir to - correct answer Vent the reservoir
