ASVAB Auto and Shop information
/ Expert Verified Actual Questions
& Answers for Guaranteed Pass |
Newest Update, 2025-2026.
Terms in this set (175)
Qs: What does the Internal Combustion engine burn? -
Answer:
Mixture of Gas and Air
(the fuel mixture)
Qs: What are the 4 strokes that make up a cycle?
(in car engine) -
Answer:
1. Intake
2. Compression
3. Power
4. Exhaust
Qs: This valve opens as the connecting rod pulls the piston down, drawing
the gas/air mix into the cylinder -
Answer:
Intake
Page 1 of 34
,Qs: The valves are closed. The connecting rod pushes the piston up,
compressing gas/air mix -
Answer:
Compression
Qs: 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 -
Answer:
Power
Qs: 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. -
Answer:
Exhaust
Qs: The name for cylinders that are arranged in one row -
Answer:
Inline
Qs: The name for cylinders that are arranged in two rows -
Answer:
V
Qs: Most people refer to engines as four-cycle engines but this is false;
what are they really called? -
Answer:
Four-stroke, one-cycle engine
Page 2 of 34
,Qs: 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) -
Answer:
Tachometer
Qs: What must happen in order for the cycle to happen at all? -
Answer:
Fuel must be properly mixed with air and transported within the cylinder at
the proper time
Qs: ___ 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 -
Answer:
Carburetors
Qs: ___ have replaced carburetors on newer cars to perform the air/fuel
mixture function. -
Answer:
Fuel Injectors
Qs: 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) -
Answer:
Fuel Injector
Page 3 of 34
, Qs: EFI computer stands for ___? -
Answer:
Electronic Fuel Injection computer
Qs: What does the EFI computer do? -
Answer:
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
Qs: ___ is mechanically connected to the carburetor
OR
___ is electronically connected to the EFI computer -
Answer:
Throttle
Qs: What does a Throttle do? -
Answer:
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.
Qs: What does the engine have because of the high temperature at which
fuel burns? -
Answer:
Cooling system
Page 4 of 34
/ Expert Verified Actual Questions
& Answers for Guaranteed Pass |
Newest Update, 2025-2026.
Terms in this set (175)
Qs: What does the Internal Combustion engine burn? -
Answer:
Mixture of Gas and Air
(the fuel mixture)
Qs: What are the 4 strokes that make up a cycle?
(in car engine) -
Answer:
1. Intake
2. Compression
3. Power
4. Exhaust
Qs: This valve opens as the connecting rod pulls the piston down, drawing
the gas/air mix into the cylinder -
Answer:
Intake
Page 1 of 34
,Qs: The valves are closed. The connecting rod pushes the piston up,
compressing gas/air mix -
Answer:
Compression
Qs: 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 -
Answer:
Power
Qs: 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. -
Answer:
Exhaust
Qs: The name for cylinders that are arranged in one row -
Answer:
Inline
Qs: The name for cylinders that are arranged in two rows -
Answer:
V
Qs: Most people refer to engines as four-cycle engines but this is false;
what are they really called? -
Answer:
Four-stroke, one-cycle engine
Page 2 of 34
,Qs: 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) -
Answer:
Tachometer
Qs: What must happen in order for the cycle to happen at all? -
Answer:
Fuel must be properly mixed with air and transported within the cylinder at
the proper time
Qs: ___ 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 -
Answer:
Carburetors
Qs: ___ have replaced carburetors on newer cars to perform the air/fuel
mixture function. -
Answer:
Fuel Injectors
Qs: 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) -
Answer:
Fuel Injector
Page 3 of 34
, Qs: EFI computer stands for ___? -
Answer:
Electronic Fuel Injection computer
Qs: What does the EFI computer do? -
Answer:
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
Qs: ___ is mechanically connected to the carburetor
OR
___ is electronically connected to the EFI computer -
Answer:
Throttle
Qs: What does a Throttle do? -
Answer:
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.
Qs: What does the engine have because of the high temperature at which
fuel burns? -
Answer:
Cooling system
Page 4 of 34
