This Small Gas Engines Chapter 8 Test evaluates knowledge on engine running conditions, air-fuel mixtures, barometric pressure effects, venturi mechanics, and types of carburetors. It's designed for learners to assess their understanding of fundamental engine mechanics and operations.
Natural draft (side draft), updraft, and downdraft
No draft, a little draft, a lot of draft
One draft, two drafts, three drafts
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Slow down the engine, save gas, safer
Maintain a speed selected by operator which is within the range of governor, prevent overspeeding, and limit both high and low speeds.
Take all the fun out of running an engine
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15 to 1
12 to 1
5 to 1
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Plastic, glass
Neoprene, brass
Cookie, doughnuts
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Gas-wetter, wet types and triple element
Oil-wetted, dry types, and dual element
Good, bad, ugly
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Open the throttle valve.
Have no effect at all
Close the throttle valve
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Detergent and water
Gasoline
Kerosene
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19" Hg
200 Hg
25.95" Hg
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Starting
Idle
Half throttle
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A spray bar needle valve
Load adjusting needle
A float level
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Oil bath cleaner
Flat pleated paper cartridge filter
Oil-wetted foam filter
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Run smoother
Incorporate a fuel pump diaphragm
Run faster
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Idling.
Under heavy load.
Running at steady high speed.
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Effective and ineffective
Small and large
Air vane (pneumatic) and centrifugal (mechanical)
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Above the float chamber level
Nearest the manifold end of the carburetor
Nearest the intake end of the carburetor
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Acting as an air bleed
Inoperative
Providing most of the fuel
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Operates only a high speed
Draws fuel through under spring pressure
Draws fuel during a vacuum pulse from the manifold or crankshaft/
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Reduces float bowl pressure
Reduces the amount of fuel discharged into the venturi
Operates only after the engine reaches part throttle
All of the above
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The overdraft
The downdraft
The updraft
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Air pressure is most where velocity is greatest.
Air pressure is least where the velocity is least.
Air pressure is least where velocity is greatest.
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Increase the air-fuel ratio
Prevent vapor lock
Improve atomization of the fuel
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Soak it in kerosene
Blow it clean
Shake it external side down
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