Licensing Exam Practice Questions And

Agricultural Equipment Technician Licensing Exam Practice Questions And Correct Answers (Verified Answers) Plus Rationales 2026 Q&A | Instant Download Pdf

• What is the primary purpose of a tractor’s differential?
• To reduce tire wear
• To allow wheels to rotate at different speeds
• To increase engine torque
• To stabilize the chassis

Rationale: Wheels on the same axle must rotate at different speeds during

turns; the differential enables this.

• Which component controls hydraulic fluid pressure in a hydraulic

system? 1 / 4

• Flow divider
• Relief valve
• Reservoir
• Cylinder

Rationale: Relief valves regulate maximum pressure to protect system

components.

• What does PTO stand for in agricultural equipment?
• Power Tire Output
• Primary Torque Operation
• Power Take-Off
• Pressure Transfer Output

Rationale: PTO transfers engine power to attached implements.

• Which fuel system component removes water from diesel fuel?
• Injector
• Lift pump
• Fuel-water separator
• Air intake

Rationale: Water separators filter out water to prevent injector damage.

• What is the main function of a combine’s threshing drum?
• Chop residue
• Separate grain from crop material
• Power the header 2 / 4

• Clean the grain

Rationale: The threshing drum removes grain kernels from stalks.

• Which battery type is most commonly used in agricultural machinery?
• Lithium-ion
• Nickel-metal hydride
• Lead-acid
• Alkaline

Rationale: Lead-acid batteries provide high starting current and are cost-

effective.

• What tool measures torque?
• Caliper
• Torque wrench
• Micrometer
• Level

Rationale: Torque wrenches apply/measure rotational force accurately.

8. Excessive black exhaust smoke in a diesel engine typically indicates:

• Low oil
• Too much fuel or insufficient air
• Coolant leak
• Worn bearings

Rationale: Rich fuel mixtures or restricted air cause incomplete

combustion. 3 / 4

• What type of hydraulic pump is most common on tractors?
• Gear pump
• Piston pump
• Vane pump
• Gear pump

Rationale: Gear pumps are durable, simple, and suitable for tractor

applications.

• Which sensor is responsible for monitoring engine air intake mass?

A. TPS

• O2 sensor
• MAF sensor
• Knock sensor

Rationale: MAF sensors measure incoming air for proper fuel control.

• What does ISO stand for in implement coupler standards?
• International Service Operations
• International Organization for Standardization
• Industrial Safety Office
• Integrated Systems Operation

Rationale: ISO sets global technical standards, including implement

interfaces.

• What is cavitation in a hydraulic pump?
• / 4