Λεωφορείο

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Λεωφορείο - ΣΥΝΤΗΡΗΣΗ 39

Multiple choice question

The aim of the anti-freeze fluid pump in a braking system with compressed air is to:

Inject the compressed air with anti-freeze fluid, so that the various components do not freeze at very low temperatures

Maintain system’s pressure steady.

Feed the system with compressed air, so that rates of higher and lower function pressure are maintained steady in the air containers.



Λεωφορείο - ΣΥΝΤΗΡΗΣΗ 38

Multiple choice question

The malfunctioning shock absorbers cause:

Abnormal behaviour of the vehicle, especially on bends.

Smaller lateral tilt of the vehicle on bends.

Irregular function of the engine.

Λεωφορείο - ΣΥΝΤΗΡΗΣΗ 37

Multiple choice question

You ascertain that in the exhaust gases of a diesel engine there is a white fume. What is the possible cause of this?

Water has entered the cylinders.

Great oil consumption.

The diesel engine has been overheated.

Λεωφορείο - ΣΥΝΤΗΡΗΣΗ 35

Multiple choice question

You notice that the air container of the braking system with compressed air (air brake) has holed. What should you do:

Ensure its repair through welding.

Ensure its immediate replacement.

Isolate it from the rest of the circuit.

Λεωφορείο - ΣΥΝΤΗΡΗΣΗ 32

Multiple choice question

If your car’s tyres have a pressure higher than the normal, where will they show an increased wear?

Only on the internal side of the tread.

On the middle (centre) of the tread.

On the sides of the tread.

Λεωφορείο - ΣΥΝΤΗΡΗΣΗ 28

Multiple choice question

When the feeding system is well adjusted, what is the cause of the blue fume from a diesel engine?

The driver drives at a high speed.

The engine consumes a lot of oil.

The engine does not have a normal ignition advance.



Λεωφορείο - ΣΥΝΤΗΡΗΣΗ 26

Multiple choice question

You notice that the diesel engine of your bus, while started, stops after a few revolutions. What may the cause of this be?

Low compression of the cylinders.

Improper internal timing of the injection pump.

Obstruction of the feeding system.

Λεωφορείο - ΣΥΝΤΗΡΗΣΗ 23

Multiple choice question

When the diesel-engine emits soot (smoke), what should you do?

Immediately repair the engine.

Change the lubrication oil.

Check and regulate the pump and fuel injectors and clean the air filter.

Λεωφορείο - ΣΥΝΤΗΡΗΣΗ 20

Multiple choice question

When the starter motor (ignition) does not switch on, which is the possible cause of that?

The belt is broken.

The multiplier does not work properly.

There is a power cut between battery and starter motor.


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