Motor Mechanic ITI Quiz

What is the purpose of engine maintenance in a vehicle?

• To improve the vehicle's color

• To increase fuel efficiency

• To reduce the number of passengers allowed

• To ensure optimal performance, longevity, and safety of the vehicle.

Explain the steps involved in troubleshooting the electrical system of a vehicle.

• Check battery, inspect fuses, test alternator, check wiring, use multimeter, test individual components.

• Inspect exhaust system, test steering wheel alignment, check tire tread depth

• Check tire pressure, inspect brake pads, test engine oil

• Replace windshield wipers, clean air filter, refill windshield washer fluid

Why is lubrication important for the proper functioning of a vehicle?

• Lubrication causes rust and corrosion in the engine

• Lubrication reduces friction between moving parts, preventing wear and tear, overheating, and engine damage.

• Lubrication increases fuel consumption and emissions

• Lubrication has no impact on the performance of a vehicle

List some common tools used by motor mechanics for vehicle maintenance.

• paintbrush

• screwdriver set

• wrenches, screwdrivers, pliers, socket sets, torque wrenches, jack stands, oil filter wrenches, multimeters

• hammer

How often should engine oil be changed in a vehicle?

• Every 3,000 miles or every 2 months

• Every 10,000 miles or every year

• Every 15,000 miles or every 5 months

• Every 5,000 to 7,500 miles or every 6 months

What are the signs of a failing alternator in a vehicle?

• Loud music playing, smooth acceleration, clean windshield

• Dimming or flickering lights, strange noises, difficulty starting, dashboard warning lights, dead battery

Describe the process of checking and refilling coolant in a vehicle.

• The process involves checking the coolant level in the reservoir, adding a 50/50 mix of coolant and water if necessary, and avoiding opening the radiator cap when the engine is hot.

• Checking the coolant level while the engine is running

• Using gasoline instead of coolant

• Pouring coolant directly into the radiator

What safety precautions should be taken when working with electrical systems in vehicles?

• Work on electrical systems in wet conditions

• Disconnect the battery, wear insulated gloves, use insulated tools, follow wiring diagrams and instructions.

• Use a metal ladder near live wires

• Wear metal jewelry for grounding

Why is it important to use the correct grade of oil in a vehicle's engine?

• Using the correct grade of oil ensures proper lubrication and protection for the engine components.

• Using the wrong grade of oil makes the engine run smoother

• The grade of oil does not affect engine performance

• Any oil grade will work fine in any vehicle

What are the different types of lubricants used in vehicles?

• Coolant

• Power steering fluid

• Brake fluid

• Engine oil, transmission fluid, grease