Michigan Hydraulic Technician Exam
Practice Questions And Correct Answers
(Verified Answers) Plus Rationale 2026
Q&A| Instant Download Pdf
1. A hydraulic system’s primary purpose is to convert mechanical power
into __________ energy to do work.
A. electrical
B. chemical
C. fluid
D. thermal
Fluid power is the fundamental means by which hydraulic systems
transmit energy to perform work.
2. Pascal’s Law states that pressure applied to a confined fluid is
transmitted __________ in all directions.
A. unequally
B. equally
C. at varying speeds
D. only downward
Pascal’s Law ensures that pressure in an enclosed fluid acts uniformly
across all surfaces.
3. In a basic hydraulic circuit, the component that stores fluid and
dissipates heat is the __________.
A. accumulator
B. relief valve
C. reservoir
D. check valve
The reservoir holds fluid and allows heat dissipation and air
separation in the system.
,4. Which type of pump delivers a fixed flow regardless of system
pressure?
A. vane pump
B. gear pump
C. variable displacement pump
D. axial piston pump
Gear pumps are fixed displacement devices producing constant flow
per revolution.
5. A relief valve is primarily used to __________.
A. increase flow
B. limit maximum system pressure
C. filter contaminants
D. store energy
Relief valves protect hydraulic systems by opening at set pressure to
prevent overpressure damage.
6. The most common fluid used in hydraulic systems is __________.
A. gasoline
B. silicone
C. mineral oil
D. ethanol
Mineral oil hydraulic fluids offer lubrication, corrosion protection,
and thermal stability.
7. Fluid viscosity is a measure of __________.
A. electrical resistance
B. weight per volume
C. flow resistance
D. density
Viscosity quantifies a fluid’s internal resistance to flow.
8. A directional control valve with a 4/3 configuration has __________.
A. four ports and three positions
B. three ports and four positions
C. four ports and three operational states
D. three ports and four operational states
4/3 valves have four fluid ports and three distinct displacement
positions.
, 9. The purpose of a hydraulic filter is to __________.
A. cool the fluid
B. increase pressure
C. store energy
D. remove contaminants
Filters protect components by trapping particles and preventing
system damage.
10. A hydraulic cylinder’s extension speed increases when
__________.
A. pressure decreases
B. rod area increases
C. flow rate increases
D. fluid cools
Cylinder speed is directly proportional to flow rate delivered to it.
11. A check valve allows fluid flow in __________.
A. both directions
B. one direction only
C. alternating directions
D. random direction
Check valves permit flow in one direction and block reverse flow.
12. Cavitation in a pump is caused by __________.
A. excessive filtration
B. low inlet pressure
C. high fluid temperature
D. oversized reservoir
Insufficient inlet pressure leads to vapor bubble formation and pump
damage.
13. The unit of pressure most commonly used in hydraulics is
__________.
A. horsepower
B. psi (pounds per square inch)
C. amps
D. BTU
Psi is the standard hydraulic pressure measurement in the U.S.
Practice Questions And Correct Answers
(Verified Answers) Plus Rationale 2026
Q&A| Instant Download Pdf
1. A hydraulic system’s primary purpose is to convert mechanical power
into __________ energy to do work.
A. electrical
B. chemical
C. fluid
D. thermal
Fluid power is the fundamental means by which hydraulic systems
transmit energy to perform work.
2. Pascal’s Law states that pressure applied to a confined fluid is
transmitted __________ in all directions.
A. unequally
B. equally
C. at varying speeds
D. only downward
Pascal’s Law ensures that pressure in an enclosed fluid acts uniformly
across all surfaces.
3. In a basic hydraulic circuit, the component that stores fluid and
dissipates heat is the __________.
A. accumulator
B. relief valve
C. reservoir
D. check valve
The reservoir holds fluid and allows heat dissipation and air
separation in the system.
,4. Which type of pump delivers a fixed flow regardless of system
pressure?
A. vane pump
B. gear pump
C. variable displacement pump
D. axial piston pump
Gear pumps are fixed displacement devices producing constant flow
per revolution.
5. A relief valve is primarily used to __________.
A. increase flow
B. limit maximum system pressure
C. filter contaminants
D. store energy
Relief valves protect hydraulic systems by opening at set pressure to
prevent overpressure damage.
6. The most common fluid used in hydraulic systems is __________.
A. gasoline
B. silicone
C. mineral oil
D. ethanol
Mineral oil hydraulic fluids offer lubrication, corrosion protection,
and thermal stability.
7. Fluid viscosity is a measure of __________.
A. electrical resistance
B. weight per volume
C. flow resistance
D. density
Viscosity quantifies a fluid’s internal resistance to flow.
8. A directional control valve with a 4/3 configuration has __________.
A. four ports and three positions
B. three ports and four positions
C. four ports and three operational states
D. three ports and four operational states
4/3 valves have four fluid ports and three distinct displacement
positions.
, 9. The purpose of a hydraulic filter is to __________.
A. cool the fluid
B. increase pressure
C. store energy
D. remove contaminants
Filters protect components by trapping particles and preventing
system damage.
10. A hydraulic cylinder’s extension speed increases when
__________.
A. pressure decreases
B. rod area increases
C. flow rate increases
D. fluid cools
Cylinder speed is directly proportional to flow rate delivered to it.
11. A check valve allows fluid flow in __________.
A. both directions
B. one direction only
C. alternating directions
D. random direction
Check valves permit flow in one direction and block reverse flow.
12. Cavitation in a pump is caused by __________.
A. excessive filtration
B. low inlet pressure
C. high fluid temperature
D. oversized reservoir
Insufficient inlet pressure leads to vapor bubble formation and pump
damage.
13. The unit of pressure most commonly used in hydraulics is
__________.
A. horsepower
B. psi (pounds per square inch)
C. amps
D. BTU
Psi is the standard hydraulic pressure measurement in the U.S.
