6/12/26, 11:21 Asvab exam
AM
ASVAB Test Bank 2026-2027 | 1138 Verified Q&A
with Explanations | General Science, Mechanical,
Electronics, Auto & Shop | AFQT Full Prep (Army
Reserve).
intake cycle
the intake valve opens as the connecting rod pulls the piston down, drawing
the gas/air mix into the cylinder
compression cycle
the valves are closed, the connecting rod pushes the piston up, compressing
gas/air mix
power cycle
the spark 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 cycle
the exhaust valve opens as the connecting rod moves the piston back up,
pushing out the exploded gases. the valves are timed, of course, using push
rods attached to the camshaft
intake valve
allows air-fuel mixture to be drawn into the combustion chamber.
combustion chamber
An enclosed container in which fuel and air are burned for the production of
energy
connecting rod
1/126
,6/12/26, 11:21 Asvab exam
AM
The connecting link between the piston and the crankshaft
piston
movable part in the cylinder forced into motion by explosion of fuel
2/126
,6/12/26, 11:21 Asvab exam
AM
cylinder
a chamber within which piston moves
spark plug
electrical device that fits into the cylinder head of an internal-combustion
engine and ignites the gas by means of an electric spark
crankshaft
Turns the piston's up and down motion into circular motion
flywheel
regulator consisting of a heavy wheel that stores kinetic energy and smooths
the operation of a reciprocating engine
camshaft
a rotating shaft within the engine that opens and closes the intake and
exhaust valve in the engine
tachometer
An instrument used to measure the speed of a revolving shaft in revolutions
per minute.
carburetor
a device that blends air and fuel for most older cars (pre-1990). As air moves
quickly through the , it creates a vacuum, which draws more and more fuel
into the mixture
fuel injector
an electrically controlled valve that delivers a precise amount of pressurized
fuel into each combustion chamber.
throttle
a valve that regulates the supply of fuel to the engine
3/126
, 6/12/26, 11:21 Asvab exam
AM
water jackets
4/126
AM
ASVAB Test Bank 2026-2027 | 1138 Verified Q&A
with Explanations | General Science, Mechanical,
Electronics, Auto & Shop | AFQT Full Prep (Army
Reserve).
intake cycle
the intake valve opens as the connecting rod pulls the piston down, drawing
the gas/air mix into the cylinder
compression cycle
the valves are closed, the connecting rod pushes the piston up, compressing
gas/air mix
power cycle
the spark 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 cycle
the exhaust valve opens as the connecting rod moves the piston back up,
pushing out the exploded gases. the valves are timed, of course, using push
rods attached to the camshaft
intake valve
allows air-fuel mixture to be drawn into the combustion chamber.
combustion chamber
An enclosed container in which fuel and air are burned for the production of
energy
connecting rod
1/126
,6/12/26, 11:21 Asvab exam
AM
The connecting link between the piston and the crankshaft
piston
movable part in the cylinder forced into motion by explosion of fuel
2/126
,6/12/26, 11:21 Asvab exam
AM
cylinder
a chamber within which piston moves
spark plug
electrical device that fits into the cylinder head of an internal-combustion
engine and ignites the gas by means of an electric spark
crankshaft
Turns the piston's up and down motion into circular motion
flywheel
regulator consisting of a heavy wheel that stores kinetic energy and smooths
the operation of a reciprocating engine
camshaft
a rotating shaft within the engine that opens and closes the intake and
exhaust valve in the engine
tachometer
An instrument used to measure the speed of a revolving shaft in revolutions
per minute.
carburetor
a device that blends air and fuel for most older cars (pre-1990). As air moves
quickly through the , it creates a vacuum, which draws more and more fuel
into the mixture
fuel injector
an electrically controlled valve that delivers a precise amount of pressurized
fuel into each combustion chamber.
throttle
a valve that regulates the supply of fuel to the engine
3/126
, 6/12/26, 11:21 Asvab exam
AM
water jackets
4/126
