Intermediate ME knowledge check

Who is responsible for your safety awareness in your Unit?

• The Commanding officer

• You

• Your Instructor

• The Captain

Which one of the following is a true statement:

• Machinery can be operated safely without guarding

• Equipment may not need to be maintained as set out in the manufacturer’s handbook

• Electrical Equipment should always be disconnected from the supply and made safe before work takes place

• Unprotected rotating shafts are not usually dangerous

The 4 –stroke cycle is:

• Power Compression Exhaust Induction

• Induction Power Compression Exhaust

• Exhaust Compression Power Induction

• Induction Compression Power Exhaust

Why are superchargers sometimes fitted to engines?

• To reduce the amount of smoke produced

• To allow the engine to develop more power

• To reduce fuel consumption

• To allow the engine to run more smoothly

The main advantage of using an exhaust gas turbocharger is:

• Smaller and takes less space

• Is the most powerful type of supercharger

• Uses waste heat (energy) from the exhaust gas to drive it

• Reduces the amount of exhaust gas produced by the engine

The fuel injector injects fuel into the cylinder as a:

• Jet

• Spray

• Fine Mist

• Droplet

Governors are fitted to diesel engines to:

• Control fuel consumption

• Control engine speed

• Control engine temperature

• Control oil pressure

Ethylene Glycol is used for what purpose in a diesel engine?

• To allow the oil to lubricate the engine more easily

• To prevent water freezing in low temperatures

• To give better cooling to the engine when it is warm

• To reduce fuel consumption

A Thermostat is a device which controls and maintains:

• Pressure

• Speed

• Temperature

• Humidity

When would you expect an unusually oil high pressure?

• When the engine is running at idle speed

• When the engine is running at full speed

• When the engine is first started from cold

• When the engine has been running for some time