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ASVAB Auto and Shop information Exam Questions and Answers $11.49   Add to cart

Exam (elaborations)

ASVAB Auto and Shop information Exam Questions and Answers

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  • ASVAB
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  • ASVAB

ASVAB Auto and Shop information Exam Questions and Answers Mixture of Gas and Air (the fuel mixture) - Ans:-What does the Internal Combustion engine burn? 1. Intake 2. Compression 3. Power 4. Exhaust - Ans:-What are the 4 strokes that make up a cycle? (in car engine) Intake - Ans:-This val...

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  • October 23, 2024
  • 24
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • ASVAB
  • ASVAB
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GraceAmelia
©GRACEAMELIA 2024/2025 ACADEMIC YEAR. ALL RIGHTS RESERVED

FIRST PUBLISH OCTOBER 2024




ASVAB Auto and Shop information Exam
Questions and Answers


Mixture of Gas and Air


(the fuel mixture) - Ans:✔✔-What does the Internal Combustion engine burn?


1. Intake


2. Compression


3. Power


4. Exhaust - Ans:✔✔-What are the 4 strokes that make up a cycle?


(in car engine)


Intake - Ans:✔✔-This valve opens as the connecting rod pulls the piston down, drawing the gas/air mix

into the cylinder


Compression - Ans:✔✔-The valves are closed. The connecting rod pushes the piston up, compressing

gas/air mix




Page 1/24

, ©GRACEAMELIA 2024/2025 ACADEMIC YEAR. ALL RIGHTS RESERVED

FIRST PUBLISH OCTOBER 2024




Power - Ans:✔✔-The spar plug ignites the gas/air mix, forcing the piston down. That pushes down on the

connecting rod, turning the crankshaft; the crankshaft turns the flywheel, which keeps the engine going


Exhaust - Ans:✔✔-The ___ valve opens as the connecting rod moves the piston back up, pushing out the

exploded gases. The valves are times, of course, using pus rods attached to the camshaft.


Inline - Ans:✔✔-The name for cylinders that are arranged in one row


V - Ans:✔✔-The name for cylinders that are arranged in two rows


Four-stroke, one-cycle engine - Ans:✔✔-Most people refer to engines as four-cycle engines but this is

false; what are they really called?


Tachometer - Ans:✔✔-Instrument in a vehicle the measures revolutions per minute; rpm


(e.g. when this displays 4,800 rpm, that means the engine is performing 4,800 cycles every minute)


Fuel must be properly mixed with air and transported within the cylinder at the proper time - Ans:✔✔-

What must happen in order for the cycle to happen at all?


Carburetors - Ans:✔✔-___ are used (pre 1990) to mix the fuel and air mechanically. As air moves quickly

through this, it creates a vacuum, which draws more and more fuel into the mixture


Fuel Injectors - Ans:✔✔-___ have replaced carburetors on newer cars to perform the air/fuel mixture

function.


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, ©GRACEAMELIA 2024/2025 ACADEMIC YEAR. ALL RIGHTS RESERVED

FIRST PUBLISH OCTOBER 2024




Fuel Injector - Ans:✔✔-The ___ acts as the fuel-dispensing nozzle. It injects liquid fuel directly in to the

engine's air stream.


(In almost all cases it requires an external pump)


Electronic Fuel Injection computer - Ans:✔✔-EFI computer stands for ___?


Determines the amount of fuel entering the engine: receives information from the sensors in the fuel,

air, and exhaust system, and from that information, it determines how much fuel the engine needs to

operate at optimum levels - Ans:✔✔-What does the EFI computer do?


Throttle - Ans:✔✔-___ is mechanically connected to the carburetor


OR


___ is electronically connected to the EFI computer


Advancing (opening) the throttle causes more fuel to be transferred to the carburetor or the fuel

injectors. The accelerator (gas pedal) is connected to the throttle by mechanical linkages. The harder you

push on the gas pedal, the farther the throttle is advanced (opened). Thus, more fuel is transported to

the carburetor or fuel injectors. - Ans:✔✔-What does a Throttle do?


Cooling system - Ans:✔✔-What does the engine have because of the high temperature at which fuel

burns?


Water Jackets
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