Practice Exam Questions And Correct

Ohio Fleet Maintenance Technician Practice Exam Questions And Correct Answers (Verified Answers) Plus Rationales 2025|2026 Q&A | Instant Download Pdf

• What is the primary purpose of preventive maintenance?
• To increase fuel consumption
• To delay necessary repairs
• To prevent equipment failure before it occurs
• To test vehicle limits

Rationale: Preventive maintenance detects and fixes issues early to

prevent breakdowns and costly repairs.

• What tool is used to measure torque?
• Micrometer
• Torque wrench 1 / 4

• Feeler gauge
• Vernier caliper

Rationale: A torque wrench ensures bolts are tightened to

manufacturer-specified torque values.

• Which fluid is used in hydraulic brake systems?
• Transmission fluid
• Engine oil
• Brake fluid
• Power steering fluid

Rationale: Brake systems use brake fluid to transfer force from the

pedal to the brakes.

• A serpentine belt drives which of the following components?
• Pistons
• Alternator
• Fuel injectors
• Spark plugs

Rationale: The serpentine belt powers accessories such as the

alternator, water pump, and A/C compressor.

• What is the most common cause of tire cupping?
• Worn suspension components
• Overinflated tires
• Underinflated tires
• Proper alignment 2 / 4

Rationale: Worn shocks or struts cause uneven tire wear known as

cupping.

• Which type of fire extinguisher is used for electrical fires?
• Class A
• Class C
• Class D
• Class K

Rationale: Class C extinguishers are used on energized electrical fires.

• What is the ideal operating temperature for most engines?

A. 100°F

B. 150°F

C. 195–220°F

D. 300°F

Rationale: Engines operate efficiently and safely between 195–220°F.

• What color is typically used for diesel fuel lines?
• Red
• Yellow
• Blue
• Green

Rationale: Yellow is commonly used to identify diesel fuel lines in

fleet maintenance systems.

• What type of oil is recommended for cold-weather engine operation?
• Low-viscosity oil 3 / 4

• High-viscosity oil
• Non-detergent oil
• Gear oil

Rationale: Low-viscosity oil flows easier in cold temperatures for

better startup lubrication.

• What is the main function of an alternator?
• Store electrical energy
• Generate electrical power
• Regulate voltage
• Start the engine

Rationale: The alternator generates electrical power to charge the

battery and run accessories.

• What component filters contaminants from engine oil?
• Air filter
• Oil filter
• Fuel filter
• Transmission filter

Rationale: The oil filter removes impurities to prevent engine wear.

• What device is used to lift heavy vehicles for undercar

inspection?

• Jack stand
• Creeper
• Hydraulic lift
• / 4