Main Propulsion

Question 1

Which internal combustion engine fuel is rated by CETANE number

Answer 1

Diesel

Question 2

What fuel(s) is used in the shipboard gas turbine

Answer 2

Aviation jet fuel and diesel fuel

Question 3

In a reciprocating engine, the reciprocating action of the piston and connecting rod are changed to a turning motion by the ______

Answer 3

Crankshaft

Question 4

The strike sequence of the four stroke cycle engine is ______

Answer 4

Intake, compression, power, exhaust

Question 5

In a four stroke cycle engine, the piston always travel toward the cylinder head during the

Answer 5

Compression and exhaust

Question 6

In a four stroke cycle engine, both intake and exhaust valves are closed on the _____ strokes.

Answer 6

Power and compression

Question 7

After leaving the carburetor, the air fuel mixture then goes to the _____

Answer 7

Intake ports or valve

Question 8

In the 2 stroke cycle engine, the exhaust and intake events occur during the _____ stroke.

Answer 8

Power

Question 9

A 2 stroke cycle engine can be readily recognized by its ______

Answer 9

Cylinder ports

Question 10

How can a 2 stroke cycle Diesel engine be identified?

Answer 10

Cylinder ports

Question 11

In gasoline internal combustion engines, the fuel mixture in the cylinder is ignited by a _________

Answer 11

Spark plug

Question 12

What device boosts the low voltage in the battery ignition system on internal combustion engine?

Answer 12

Ignition coil

Question 13

What device sends an ignition spark to the spark plug at the correct instant?

Answer 13

Distributor

Question 14

The magneto is a device similar to an ____

Answer 14

Electronic generator

Question 15

In a four stroke cycle gasoline engine, fuel is mixed with air in the ______

Answer 15

Carburetor

Question 16

What is used to ignite fuel in a Diesel engine?

Answer 16

Heat of compression

Question 17

What device adds fuel to a Diesel engine cylinder?

Answer 17

Injector

Question 18

What device applies air pressure to the intake of an operating Diesel engine?

Answer 18

Blower

Question 19

What is the main function of a supercharger?

Answer 19

Increasing engine output

Question 20

What is the function of an engine coolant system?

Answer 20

Maintain a specific operating temp

Question 21

In a simple cooling system, the thermostat ____

Answer 21

Regulates water temp

Question 22

What are the 4 main functions of lube oil

Answer 22

Cools, clean, lubricates, seals

Question 23

An engine where the lube oil is stored in the crankcase of the engine is called the ______ type

Answer 23

Wet sump

Question 24

When lube oil leaves and engine sump, it goes through a _______

Answer 24

Screen

Question 25

In a 2 stroke cycle gasoline engine, where is the lube oil placed?

Answer 25

Fuel tank

Question 26

In a gas turbine, how is the burning fuel used to develop mechanical energy?

Answer 26

Expanding gases turn the turbine blades

Question 27

What is the function of the free turbine?

Answer 27

Converts energy of the engine exhaust into mechanical energy

Question 28

What is the main disadvantage of the gas turbine engine?

Answer 28

High fuel consumption