Motorenwartung und -reparatur: Online-Quiz für Kfz-Mechatronikerinnen

Question 1

Which of these tasks is NOT typically considered routine maintenance for an internal combustion engine?

Accepted Answer

Replacing the engine block

Answer

Checking and adjusting valve clearances

Answer

Inspecting and adjusting spark plugs

Answer

Changing the oil and filter

Question 2

A knocking sound coming from the engine could be a sign of a problem with the:

Accepted Answer

Connecting rods

Answer

Exhaust manifold

Answer

Alternator

Answer

Fuel injectors

Question 3

What is the main purpose of the cylinder head gasket?

Accepted Answer

To seal the combustion chamber and prevent coolant leaks

Answer

To connect the crankshaft to the transmission

Answer

To distribute oil to the pistons

Question 4

Which tool is commonly used to check the gap between the valve and the rocker arm?

Accepted Answer

Feeler gauge

Answer

Torque wrench

Answer

Multimeter

Answer

Micrometer

Question 5

The timing belt or chain ensures that the:

Accepted Answer

Crankshaft and camshaft rotate in sync

Answer

Coolant flow is regulated

Answer

Alternator receives power

Question 6

When should the engine air filter be replaced?

Accepted Answer

When it's visibly dirty or clogged

Answer

Every 10,000 kilometers

Answer

Only when the engine runs poorly

Answer

Every 5 years

Question 7

A common cause of an engine overheating is:

Accepted Answer

Low coolant levels

Answer

Worn-out piston rings

Answer

Faulty spark plugs

Answer

Blocked fuel injectors

Question 8

What type of engine oil is generally preferred for modern gasoline engines?

Accepted Answer

Synthetic oil

Answer

Hydraulic oil

Answer

Vegetable oil

Answer

Mineral oil

Question 9

Before carrying out major engine repairs, what safety step should be taken first?

Accepted Answer

Disconnect the battery

Answer

Adjust the valve clearances

Answer

Replace the spark plugs

Answer

Remove the air filter

Question 10

What does a cylinder compression test primarily measure?

Accepted Answer

The tightness of the seal within the combustion chamber

Answer

The air/fuel mixture ratio

Answer

The efficiency of the ignition system

Question 11

Which of the following is an essential component of an internal combustion engine?

Accepted Answer

Cylinder

Answer

Alternator

Answer

Carburetor

Answer

Suspension

Question 12

What is the main function of the timing belt in an engine?

Accepted Answer

Synchronizes the rotation of the camshaft and crankshaft

Answer

Drives the oil pump

Answer

Provides ignition to the spark plugs

Answer

Cools the engine

Question 13

What is the primary role of an oil filter in an engine?

Accepted Answer

Removes impurities from engine oil

Answer

Lubricates moving parts

Answer

Provides cooling for the engine

Answer

Improves fuel efficiency

Question 14

Which of the following is a contributing factor to head gasket failure?

Accepted Answer

Overheating

Answer

Faulty fuel injectors

Answer

Insufficient coolant

Answer

Dirty air filter

Question 15

When replacing an engine air filter, you should also:

Accepted Answer

Inspect the air filter housing for damage

Answer

Clean the throttle body

Answer

Change the spark plugs.

Answer

Flush the radiator

Question 16

Which specialized tool is used to measure and apply specific amounts of torque?

Accepted Answer

Torque wrench

Answer

Micrometer

Answer

Compression tester

Answer

Multimeter

Question 17

What is the main purpose of a catalytic converter in a vehicle?

Accepted Answer

Reduces harmful pollutants in exhaust emissions

Answer

Increases fuel efficiency

Answer

Improves engine performance

Answer

Enhances vehicle appearance

Question 18

What is the primary reason for changing engine oil?

Accepted Answer

Lubricates moving parts and removes contaminants

Answer

Protects against corrosion

Answer

Improves fuel economy

Answer

Reduces engine noise

Question 19

Which of the following is NOT a potential cause of engine overheating?

Accepted Answer

Proper use of the air conditioning system

Answer

Low coolant levels

Answer

Faulty thermostat

Answer

Clogged radiator

Question 20

A rhythmic knocking sound coming from an engine may indicate:

Accepted Answer

Rod knock

Answer

Fuel injector malfunction

Answer

Timing belt failure

Answer

Valve sticking

Question 21

What is the function of the spark plugs in an internal combustion engine?

Accepted Answer

To ignite the air-fuel mixture.

Answer

To compress the air-fuel mixture.

Answer

To regulate fuel flow.

Answer

To exhaust combustion gases.

Question 22

When checking engine compression, what does a low reading indicate?

Accepted Answer

A problem with cylinder sealing or valve operation.

Answer

A need for higher-octane fuel.

Answer

Excessive engine wear.

Question 23

Which of the following tools is NOT typically used for basic engine maintenance?

Accepted Answer

Oxyacetylene torch.

Answer

Socket set.

Answer

Torque wrench.

Answer

Breaker bar.

Question 24

What is the purpose of the timing belt in an engine?

Accepted Answer

To synchronize the movement of the crankshaft and camshaft.

Answer

To control engine speed.

Answer

To regulate fuel injection.

Question 25

You are replacing a spark plug. Which of the following is the most important safety precaution to take?

Accepted Answer

Disconnect the battery before touching the spark plug wires.

Answer

Use a torque wrench.

Answer

Wear protective gloves.

Question 26

What is the correct procedure for checking engine oil level?

Accepted Answer

Check the dipstick after the engine has been running for a few minutes.

Answer

Check the dipstick with the engine running.

Answer

Check the dipstick immediately after the engine has been turned off.