5.2 Light Vehicle - Repair Service Quiz

What is the purpose of the engine cooling system?

• To decrease lubricating oil effectiveness

• To maintain the engine at the best operating temperature

• To increase engine temperature

• To reduce unnecessary heat

Name two types of cooling systems used in engines.

• Water cooling system and Air cooling system

• Oil cooling system and Gas cooling system

• Hybrid cooling system and Electric cooling system

• Liquid cooling system and Solid cooling system

What is the function of the water pump in the engine cooling system?

• To pump water from the radiator into the engine and absorb heat

• To regulate the engine temperature

• To cool the engine with air

• To increase engine vibrations

How can you inspect the radiator for any obstructions?

• Listen for unusual sounds and smell for leaks

• Shake the radiator and check for vibrations

• Visually check for dirt or debris and use a radiator tester

• Measure the temperature with a thermometer

What is the purpose of the thermostat in the engine cooling system?

• To block the flow of water inside the engine and regulate temperature

• To increase engine speed

• To cool the engine with air

• To absorb excess heat from the engine

What can cause Noise, Vibration, and Harshness (NVH) in a vehicle?

• Engine mounting, Radiator cap and Lower arm

• Fastening manner and Incompatible material

• Water pump and Thermostat

• Belting and Fan blade

What is the definition of vibration in a vehicle?

• Repetitive motion of an object

• Resistance to movement of an object

• Unpleasant sound produced by a vibrating object

• Discomfort resulting from rough suspension

How can you diagnose NVH issues in a vehicle?

• By measuring the vehicle weight and speed

• By classifying the sound and identifying the source

• By checking the tire pressure and engine oil level

• By inspecting the windshield and mirrors

What is the main source of NVH in a car?

• Engine, drivetrain, and tires

• Brakes, suspension, and steering

• Dashboard, radio, and air conditioning

• Exhaust system and fuel tank

What can cause harshness in a vehicle?

• Engine mounting and Radiator cap

• Fastening manner and Incompatible material

• Water pump and Thermostat

• Worn components, damage, or modifications to the original equipment