Small craft tech final exam study guide 2022 with complete solution
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Course
Small craft tech
Institution
Small Craft Tech
Small craft tech final exam study guide 2022 with complete solution
coal dust
In his 1892 patent draft, Rudolf Diesel proposed using__________as his engine's probable fuel.
A. diesel fuel
B. gasoline
C. coal dust
D. alcohol
solid fuel injection
The 1920s saw the perfection of___________ch...
small craft tech final exam study guide 2022 with complete solution coal dust in his 1892 patent draft
rudolf diesel proposed usingas his engines probable fuel a diesel fuel b gasol
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Small craft tech final exam study guide 2022 with complete
solution
coal dust
In his 1892 patent draft, Rudolf Diesel proposed using__________as his engine's
probable fuel.
A. diesel fuel
B. gasoline
C. coal dust
D. alcohol
solid fuel injection
The 1920s saw the perfection of___________chamber without using an air compressor.
A. solid fuel injection
B. turbochargers
C. four-stroke diesel engines
D. electronic fuel injection
Clessie Cummins
The only diesel-powered vehicle ever entered in the Indianapolis 500 was driven
by__________ and completed the
race without a fuel stop.
A. James Packard
B. Clessie Cummins
C. Carl Linde
D. John Kohler
All of the above
Electronically controlled fuel injection systems use_________ to help diesel engines
conform to strict emissions
standards.
A. a computer
B. sensors
C. actuators
D. All of the above.
supercharger
The use of a___________ improves diesel engine efficiency by increasing power
output.
A. hydraulic activator
B. supercharger
C. pneumatic governor
D. All of the above.
Cylinder block
Which of the following is considered the foundation of the diesel engine and supports all
of the other engine
components?
A. Crankshaft.
B. Cylinder block.
,C. Camshaft.
D. Cylinder head
water jackets
Passages in the cylinder block that allow coolant to move around the outside of the
cylinder and carry off the
excess heat generated by combustion are called ___________.
A. wet sleeves
B. plenums
C. water jackets
D. galleries
piston rings
Grooves cut into the side surface of the piston are fitted with___________that seal in
the compression and
combustion pressure, and control the lubricating oil film on the wall of the cylinder liner.
A. gaskets
B. O-rings
C. oil seals
D. piston rings
Oil pickup tube
Which of the following extends into the sump and is covered by a coarse wire screen
that prevents dirt and
bits of metal from entering the lubrication system and damaging the engine?
A. Vibration damper.
B. Oil pickup tube.
C. Flywheel.
D. All of the above.
cam lobes
The action of opening and closing the valves is determined by the size and shape of the
A. intake ports
B. cam lobes
C. ring gear
D. cylinder head
head gasket
When the cylinder head is bolted to the block, a___________is installed between the
head and block to maintain an
airtight and watertight seal.
A. manifold
B. head gasket
C. Crossover
D. header
crosshead
When two valves are used for the same function in a cylinder, a__________is added to
form a bridge between thevalves.
A. manifold
B. dual port
, C. header
D. crosshead
Intake manifold
Which of the following distributes clean, filtered air to the intake ports of each cylinder
on a four-cycle
engine?
A. Air box.
B. Intake manifold.
C. Turbocharger.
D. Exhaust manifold.
charge air cooler
A__________is a heat exchanger that is designed to cool intake air before it enters the
combustion chamber.
A. plenum
B. manifold
C. charge air cooler
D. radiator
cooled
When air is compressed, it heats up. A diesel engine will perform better if the intake air
is_________before it enters the combustion chamber.
A. heated
B. filtered
C. cooled
D. humidified
compression
During the_____________stroke, both the intake and exhaust valves are closed while
the piston moves upward in the cylinder.
A. intake
B. compression
C. power
D. exhaust
24°
If the intake valves open 12° before top dead center (BTDC) and the exhaust valves do
not close until 12°
after top dead center (ATDC), the valve overlap is____________.
A. 0°
B. 6°
C. 12°
D. 24°
two-stroke cycle engine
A___________completes a full combustion cycle using only one revolution of the
crankshaft.
A. three-cylinder engine
B. two-stroke cycle engine
C. four-stroke engine
D. hybrid engine
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