Industrial Hydraulics Technician Level 2
Practice Exam Questions And Correct
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Rationales 2026 Q&A Instant Download
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1. What is the primary function of hydraulic fluid in a system?
Provides lubrication and power transmission
Stores electrical energy
Reduces system voltage
Acts as a refrigerant
Answer: Provides lubrication and power transmission
Rationale: Hydraulic fluid transmits force while also lubricating and
cooling system components.
2. Which component converts mechanical energy into hydraulic energy?
Hydraulic motor
Pump
Cylinder
Valve
Answer: Pump
Rationale: A pump converts mechanical input into fluid flow and pressure.
3. What does Pascal’s Law state?
Pressure decreases with depth
, Pressure is transmitted equally in all directions in a confined fluid
Flow increases with pressure
Energy is lost in closed systems
Answer: Pressure is transmitted equally in all directions in a confined fluid
Rationale: Pascal’s Law is the foundation of hydraulic force transmission.
4. Which fluid property resists flow?
Density
Viscosity
Compressibility
Turbulence
Answer: Viscosity
Rationale: Viscosity is a fluid’s resistance to flow.
5. What component controls flow direction in a hydraulic system?
Pump
Valve
Accumulator
Filter
Answer: Valve
Rationale: Directional control valves route fluid flow paths.
6. What is the purpose of a hydraulic accumulator?
Increase fluid temperature
Store pressurized fluid energy
Filter contaminants
Reduce viscosity
Answer: Store pressurized fluid energy
Rationale: Accumulators store energy for later use or shock absorption.
7. Which device removes contamination from hydraulic fluid?
Cooler
Filter
Pump
Cylinder
, Answer: Filter
Rationale: Filters trap particles and maintain fluid cleanliness.
8. What is cavitation in hydraulic systems?
High pressure buildup
Formation of vapor bubbles due to low pressure
Fluid overheating
Valve leakage
Answer: Formation of vapor bubbles due to low pressure
Rationale: Cavitation occurs when pressure drops below vapor pressure.
9. Which unit measures hydraulic pressure?
Watts
Pascals or PSI
Amperes
Liters
Answer: Pascals or PSI
Rationale: Pressure is measured in force per unit area.
10.What is the role of a relief valve?
Increase pressure
Limit maximum system pressure
Control direction
Measure flow
Answer: Limit maximum system pressure
Rationale: Relief valves protect systems from overpressure.
11.What type of pump delivers constant flow?
Variable displacement pump
Fixed displacement pump
Centrifugal pump
Gearless pump
Answer: Fixed displacement pump
Rationale: Fixed pumps deliver a constant volume per rotation.
Practice Exam Questions And Correct
Answers (Verified Answers) Plus
Rationales 2026 Q&A Instant Download
1. What is the primary function of hydraulic fluid in a system?
Provides lubrication and power transmission
Stores electrical energy
Reduces system voltage
Acts as a refrigerant
Answer: Provides lubrication and power transmission
Rationale: Hydraulic fluid transmits force while also lubricating and
cooling system components.
2. Which component converts mechanical energy into hydraulic energy?
Hydraulic motor
Pump
Cylinder
Valve
Answer: Pump
Rationale: A pump converts mechanical input into fluid flow and pressure.
3. What does Pascal’s Law state?
Pressure decreases with depth
, Pressure is transmitted equally in all directions in a confined fluid
Flow increases with pressure
Energy is lost in closed systems
Answer: Pressure is transmitted equally in all directions in a confined fluid
Rationale: Pascal’s Law is the foundation of hydraulic force transmission.
4. Which fluid property resists flow?
Density
Viscosity
Compressibility
Turbulence
Answer: Viscosity
Rationale: Viscosity is a fluid’s resistance to flow.
5. What component controls flow direction in a hydraulic system?
Pump
Valve
Accumulator
Filter
Answer: Valve
Rationale: Directional control valves route fluid flow paths.
6. What is the purpose of a hydraulic accumulator?
Increase fluid temperature
Store pressurized fluid energy
Filter contaminants
Reduce viscosity
Answer: Store pressurized fluid energy
Rationale: Accumulators store energy for later use or shock absorption.
7. Which device removes contamination from hydraulic fluid?
Cooler
Filter
Pump
Cylinder
, Answer: Filter
Rationale: Filters trap particles and maintain fluid cleanliness.
8. What is cavitation in hydraulic systems?
High pressure buildup
Formation of vapor bubbles due to low pressure
Fluid overheating
Valve leakage
Answer: Formation of vapor bubbles due to low pressure
Rationale: Cavitation occurs when pressure drops below vapor pressure.
9. Which unit measures hydraulic pressure?
Watts
Pascals or PSI
Amperes
Liters
Answer: Pascals or PSI
Rationale: Pressure is measured in force per unit area.
10.What is the role of a relief valve?
Increase pressure
Limit maximum system pressure
Control direction
Measure flow
Answer: Limit maximum system pressure
Rationale: Relief valves protect systems from overpressure.
11.What type of pump delivers constant flow?
Variable displacement pump
Fixed displacement pump
Centrifugal pump
Gearless pump
Answer: Fixed displacement pump
Rationale: Fixed pumps deliver a constant volume per rotation.
