TPC Basic Hydraulics UPDATED ACTUAL
Exam Questions and CORRECT Answers
A hydraulic pipe designated as Scheduled 80 is - CORRECT ANSWER - Extra Heavy
A disadvantage of using hose in hydaulic systems instead of piping or tubingis that the hose -
CORRECT ANSWER - is less permanent
Which type of fitting should be used on a steel hydraulic line - CORRECT ANSWER -
steel
Pressure lose in a hydraulic line depends on the - CORRECT ANSWER - flow velocity
Hydraulic lines should NEVER be constructed of - CORRECT ANSWER - Galvanized
pipe
Which type of valve has a round core - CORRECT ANSWER - Rotary
To facillitate comparison, manufacturers rate the flow capacity of vavles by their - CORRECT
ANSWER - CV Factor
Which of the following kinds of vavles should be used in hydraulic system to change the
direction of motion of the cylinder? - CORRECT ANSWER - Directional control vavle
The coonsturction of a spool vavle causes it to - CORRECT ANSWER - Be partially
balanced
In applications using a needle vavle that must be shut off frequently, a ________ should be used
- CORRECT ANSWER - sofft seat
, What characteristic of a fluid does the term "specific gravity" describe ? - CORRECT
ANSWER - Density
the formation of large air bubbles or pockets in a hydraulic system is known as - CORRECT
ANSWER - Cavitation
The Law of Conservatiion of Energy states that energy cannot be created or destroyed, it can
only be - CORRECT ANSWER - Transformed
According to Bernoullis Law Principle, when fluid flow increases in asystem, the pressure -
CORRECT ANSWER - Decreases
What type of energy is produced in a hydraulic system when the piston has raised an object to a
higher level ? - CORRECT ANSWER - Potential
Fluid pressure in one section of a hydraulic system is limited by a - CORRECT
ANSWER - reducing vavle
The flow from the outlet of a sequence vavle is at - CORRECT ANSWER - Line pressure
A meter out flow control vavle is used to regulate fluid flow from a(n) - CORRECT
ANSWER - actuator
The operating differential pressure of a relief vavle is the difference between its maximum -
CORRECT ANSWER - Cracking pressure
A counterbalance vavle is normally a _______ vavle - CORRECT ANSWER - double-
poppet
The ability of a fluid to penetrate into small clearances between closely fitted parts is determined
by the fluid's - CORRECT ANSWER - viscosity
Exam Questions and CORRECT Answers
A hydraulic pipe designated as Scheduled 80 is - CORRECT ANSWER - Extra Heavy
A disadvantage of using hose in hydaulic systems instead of piping or tubingis that the hose -
CORRECT ANSWER - is less permanent
Which type of fitting should be used on a steel hydraulic line - CORRECT ANSWER -
steel
Pressure lose in a hydraulic line depends on the - CORRECT ANSWER - flow velocity
Hydraulic lines should NEVER be constructed of - CORRECT ANSWER - Galvanized
pipe
Which type of valve has a round core - CORRECT ANSWER - Rotary
To facillitate comparison, manufacturers rate the flow capacity of vavles by their - CORRECT
ANSWER - CV Factor
Which of the following kinds of vavles should be used in hydraulic system to change the
direction of motion of the cylinder? - CORRECT ANSWER - Directional control vavle
The coonsturction of a spool vavle causes it to - CORRECT ANSWER - Be partially
balanced
In applications using a needle vavle that must be shut off frequently, a ________ should be used
- CORRECT ANSWER - sofft seat
, What characteristic of a fluid does the term "specific gravity" describe ? - CORRECT
ANSWER - Density
the formation of large air bubbles or pockets in a hydraulic system is known as - CORRECT
ANSWER - Cavitation
The Law of Conservatiion of Energy states that energy cannot be created or destroyed, it can
only be - CORRECT ANSWER - Transformed
According to Bernoullis Law Principle, when fluid flow increases in asystem, the pressure -
CORRECT ANSWER - Decreases
What type of energy is produced in a hydraulic system when the piston has raised an object to a
higher level ? - CORRECT ANSWER - Potential
Fluid pressure in one section of a hydraulic system is limited by a - CORRECT
ANSWER - reducing vavle
The flow from the outlet of a sequence vavle is at - CORRECT ANSWER - Line pressure
A meter out flow control vavle is used to regulate fluid flow from a(n) - CORRECT
ANSWER - actuator
The operating differential pressure of a relief vavle is the difference between its maximum -
CORRECT ANSWER - Cracking pressure
A counterbalance vavle is normally a _______ vavle - CORRECT ANSWER - double-
poppet
The ability of a fluid to penetrate into small clearances between closely fitted parts is determined
by the fluid's - CORRECT ANSWER - viscosity
