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

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  • October 15, 2024
  • 22
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

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  • asvab auto and shop information exam questions and

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EMILLECT 2024/2025 ACADEMIC YEAR ©2024 EMILLECT. ALL RIGHTS RESERVED FIRST PUBLISH OCTOBER, 2024




ASVAB Auto and Shop information Exam
Questions and Answers

Mixture of Gas and Air


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


1. Intake


2. Compression


3. Power


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


(in car engine)


Intake - Answer✔✔-This valve opens as the connecting rod pulls the piston down, drawing the

gas/air mix into the cylinder


Compression - Answer✔✔-The valves are closed. The connecting rod pushes the piston up,

compressing gas/air mix


Power - Answer✔✔-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



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,EMILLECT 2024/2025 ACADEMIC YEAR ©2024 EMILLECT. ALL RIGHTS RESERVED FIRST PUBLISH OCTOBER, 2024


Exhaust - Answer✔✔-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 - Answer✔✔-The name for cylinders that are arranged in one row


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


Four-stroke, one-cycle engine - Answer✔✔-Most people refer to engines as four-cycle engines

but this is false; what are they really called?


Tachometer - Answer✔✔-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 -

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


Carburetors - Answer✔✔-___ 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 - Answer✔✔-___ have replaced carburetors on newer cars to perform the air/fuel

mixture function.


Fuel Injector - Answer✔✔-The ___ acts as the fuel-dispensing nozzle. It injects liquid fuel

directly in to the engine's air stream.

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, EMILLECT 2024/2025 ACADEMIC YEAR ©2024 EMILLECT. ALL RIGHTS RESERVED FIRST PUBLISH OCTOBER, 2024


(In almost all cases it requires an external pump)


Electronic Fuel Injection computer - Answer✔✔-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 - Answer✔✔-What does the EFI computer do?


Throttle - Answer✔✔-___ 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. - Answer✔✔-What does a Throttle do?


Cooling system - Answer✔✔-What does the engine have because of the high temperature at

which fuel burns?


Water Jackets


Water Pump


Radiator - Answer✔✔-What are the 3 components of the engine's cooling system?




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