Download ASVAB 2024-2025 EXAM QUESTIONS and more Exams Knowledge Management in PDF only on Docsity!
ASVAB 2024-2025 EXAM
UPDATED QUESTIONS WITH 100% CORRECT ANSWERS
"What does a fuel rail do? - CORRECT ANSWER A fuel rail delivers fuel under pressure to the
engine's fuel injectors."
"The camshaft is driven by the crankshaft by means of a _____. - CORRECT ANSWER Timing
belt or timing chain"
"Where is the oil filter positioned in an engine? - CORRECT ANSWER the oil filter filers oil after
it leaves the oil pump and before it circulates through the engine"
"Static friction only arises in response to an attempt to _______ - CORRECT ANSWER move an
object along a surface"
"Why is an inclined plane a good solution for a lifting task? - CORRECT ANSWER The force
required will be less than the force required to lift the object directly"
"____ is a term for the ability of a force to cause an object to rotate - CORRECT ANSWER
Torque"
"_____ is the term for the responsive force exerted within an object as the object is stretched -
CORRECT ANSWER Tension"
"In a second-class lever, where is the fulcrum, and where is the force applied - CORRECT
ANSWER The fulcrum is positioned at one end, the object is in the middle and the force is
applied at the other end going upward"
"A nut/bolt has external threads, while a nut/bolt has internal threads. - CORRECT ANSWER
Bolt, nut" "_______ saws are used to cut across the grain of a piece of wood, while _______ saws are used
to cut with the grain - CORRECT ANSWER crosscut, rip"
"The process of adding impurities to silicon or germanium in order to improve its usefulness as a
semiconductor is called _____ - CORRECT ANSWER doping"
"Electrical current is measured in _____ - CORRECT ANSWER Amperes"
"When light bends due to passing through a medium, this bending is referred to as _________ -
CORRECT ANSWER Refraction"
"Define capillaries - CORRECT ANSWER The smallest blood vessels, which deliver oxygenated
blood to the body's tissues"
"Identify the value and abbreviation of Deka - CORRECT ANSWER base times 10, symbolized
by da"
"The hottest and uppermost layer of Earth's atmosphere is the ________ - CORRECT ANSWER
Mantle"
"Define Trachea - CORRECT ANSWER The windpipe--the passageway from the throat to the
lungs"
"which blood type is the universal donor - CORRECT ANSWER O"
"Above the stratosphere is the - CORRECT ANSWER Mesosphere"
"What role do ribosomes play in eukaryotic cells? - CORRECT ANSWER Produces protein"
"Variants of genes is known as - CORRECT ANSWER alleles"
"Define the abbreviation of Hecto - CORRECT ANSWER Base x 100"
"Scurvy is the lack of what nutrient? - CORRECT ANSWER Vitamin C"
"Liquids are effective at transmitting force because they are difficult to - CORRECT ANSWER
Compress"
"What does torque measure - CORRECT ANSWER how much a force is able to cause an object
to rotate"
"Torque is directly proportional to _____ and _____. - CORRECT ANSWER force and distance"
"rock is formed when existing rock material is altered by changes in temperature, pressure, or
other processes - CORRECT ANSWER Metamorphic"
"a ______ is used to increase or decrease voltage in a circuit - CORRECT ANSWER
Transformer"
"Induction is measured in ___. - CORRECT ANSWER Henries"
"If multiple loads are connected in a series circuit, how is the overall resistance of the circuit
calculated? - CORRECT ANSWER Rtot = R1 + R2 + R3"
"Define electrical power - CORRECT ANSWER Electrical power is the amount of energy
delivered to and used by an electric circuit"
"A _____ is used to raise or lower current in a circuit - CORRECT ANSWER Resistor"
"A ______ is a thing wire that melts when current exceeds a certain amount - CORRECT
ANSWER Fuse"
"______ pliers are used for cutting and bending heavy-gauge wire - CORRECT ANSWER
Lineman"
"Locking pliers are also known as - CORRECT ANSWER vise-grip pliers"
"binding surfaces together with a molten metal alloy is called - CORRECT ANSWER soldering"
"A ____ saw is used for making fine, straight cuts - CORRECT ANSWER back saw"
"which are used for finer finishing ---- rasps or files? - CORRECT ANSWER Files"
"What type of screwdriver would be used with a screw with this type of head? - CORRECT
ANSWER Robertson screwdriver"
"What type of saw is used for cutting metal? - CORRECT ANSWER hacksaw"
"_______ calipers measure the exterior dimensions of an object; ________ calipers measure
interior dimensions - CORRECT ANSWER Outside, Inside"
"Oxyacetylene welding uses a torch fueled by a mixture of ______ and _______ - CORRECT
ANSWER Oxygen and Acetylene"
"_________ protect other car parts from the energy produced by the up and down movement of
the wheels - CORRECT ANSWER Shock absorbers"
"the high-voltage winding in a car's ignition system is called the _______ - CORRECT ANSWER
Secondary coil winding"
"______ send data to a car's computer; ____ receive commands from a car's computer -
CORRECT ANSWER Sensors; Actuators"
"The AC electricity produced by the alternator is converted to DC by the _______ - CORRECT
ANSWER rectifier"
"What happens in an engine's oil pain - CORRECT ANSWER Oil drips from various engine parts
into the pan and gets picked up by the oil tube and sent back to the oil pump"
"What is the common distinction between screw and a bolt? - CORRECT ANSWER A screw has
a round head and indentation and a bolt has a square head"
"________ thread onto bolts to clamp assemblies together. - CORRECT ANSWER Nuts"
"The UNC and UNF classifications define fasteners based on which measure? - CORRECT
ANSWER Number of threads per inch"
"A hacksaw is made to cut on the ______ stroke. - CORRECT ANSWER forward"
"Why is the diameter of a fastener critical to a task? - CORRECT ANSWER Determines the size
of the hole"
"Metal inert gas welding is also known as ______ welding - CORRECT ANSWER Wire feed
welding"
"Why are parallel circuits usually superior to series circuits? - CORRECT ANSWER If a path
breaks it'll still maintain a closed circuit"
"What is the equation for frequency - CORRECT ANSWER Frequency = 1/time period"
"A convex mirror _ light waves; a convex lens _ light waves. - CORRECT ANSWER Diverges;
Converges"
"The state of matter occurring at lower temperature is the _____ state - CORRECT ANSWER
Solid state"
"An acid gives up _____ charged hydrogen ions when dissolved in water. - CORRECT ANSWER
positively charged ion"
"A type of matter is classified as an element when _____ - CORRECT ANSWER it cannot be
separated into different types of matter by ordinary chemical methods"
"The speed of light in a vacuum is approximately _____ meters per second - CORRECT
ANSWER 300 million meters per second"
"Identify this symbol: - CORRECT ANSWER On/off switch"
"What is the formula for ohms law - CORRECT ANSWER V = IR (Voltage = Current x
Resistance)" "if an element's atoms have valence shells that are more than half full of electrons, that element
is a(n) _________ - CORRECT ANSWER insulator"
"Identify this symbol: - CORRECT ANSWER Diode"
"When a current is passed through a wire coiled around a ferrous material, the result is a(n)
_____. - CORRECT ANSWER electromagnet"
"Do household electrical outlets in North America use AC or DC current? - CORRECT ANSWER
AC"
"What does an electrical ground do? - CORRECT ANSWER ground provides a low resistance
path to guide excess electrical energy away from panels and loads"
"If an element' atoms have valence shells that are less than half full of electrons , that element is
a(n) - CORRECT ANSWER Conductor"
"When the thermostat is _____, coolant does not pass through the radiator. - CORRECT
ANSWER Closed"
"What are the two main component of engine oil? - CORRECT ANSWER Base oil; additive
package"
"Which are of the engine is most reliant on lubrication? - CORRECT ANSWER The reciprocating
assembly"
"The most common type of fuel injection systems are ____ and _____ - CORRECT ANSWER
Multiport fuel injection; Direct injection"
"What parts have been eliminated in coil-on-plug ignition systems? - CORRECT ANSWER Spark
plug wires"
"What is the basic function of the drivetrain system? - CORRECT ANSWER Transmit power
from the engine to the wheels"
"Power is defined as _____ and measured in ______ - CORRECT ANSWER The rate of work is
performed; watts"
"the term ____ refers to the total of various pushes and pulls acting on an object - CORRECT
ANSWER Net force"
"What is inertia? - CORRECT ANSWER The tendency of an object to resist a change in motion"
"Acceleration due to gravity approximately _____ meters per second , not counting air resistance
- CORRECT ANSWER 9.8 meters per second"
"What is the formula for work? - CORRECT ANSWER work = force x displacement"
"What is the formula for momentum? - CORRECT ANSWER p=mv"
"Which blood type is the universal recipient? - CORRECT ANSWER Type AB"
"The ______ is the portion of the brain that controls involuntary actions such as breathing -
CORRECT ANSWER Medulla"
"Name the three ways heat can be transferred form one object or medium to another -
CORRECT ANSWER Conduction, Convection, radiation"
"Water freezes at _____ kelvin - CORRECT ANSWER 273"
"What role does pepsin play in the body - CORRECT ANSWER Pepsin breaks down proteins in
the stomach"
"a ____ lens curves outwards; a _____ lens curves inwards - CORRECT ANSWER Convex;
Concave"
"when a gas changes to a liquid, this process is known as ______ - CORRECT ANSWER
Condensation"
"What is produced in the testes? - CORRECT ANSWER sperm"
"Name the four major components of blood - CORRECT ANSWER plasma, red blood cells,
white blood cells, platelets"
"When heat is transferred through electromagnetic waves, this is known as - CORRECT
ANSWER Radiation"
"Define endometrium - CORRECT ANSWER lining of the uterus"
"When one atom bonds to another by borrowing an electron is a called a _____ bond - CORRECT
ANSWER Ionic bond"
"two atoms with the same amount of electrons and neutrons but different numbers of neutrons
are called _____ - CORRECT ANSWER Isotopes"
"Identify the value and abbreviation of metric system prefix: micro - CORRECT ANSWER Base x
"What is an element's atomic number? - CORRECT ANSWER The number of protons in one of
the element's atoms"
"Rows of the periodic table refer to ______ columns of the periodic table refer to ______ -
CORRECT ANSWER Electron shells in atom; electron shells outside of atom"
"What is the common name for hypertension - CORRECT ANSWER high blood pressure"
"The ozone layer is part of the _____ - CORRECT ANSWER Stratosphere"
"Combination slip joint pliers are adjustable at the _____ - CORRECT ANSWER joint of two
handles"
"_____ nuts can be loosened by hand - CORRECT ANSWER wing nuts"
"a worker would use a _______ to join to two pieces of wood while glue used to bind them dries
CORRECT ANSWER Clamp"
"What is the difference between tubular spirit level and a bullseye spirit level? - CORRECT
ANSWER Tubular spirit level measures a levelness in one dimension while a bullseye spirit level
measures a levelness in all dimensions"
"What type of screwdriver would be used with a screw with this type of head? - CORRECT
ANSWER Torx screwdriver"
"a drill's chuck is identified by the ______ diameter drill bit it will hold - CORRECT ANSWER
Largest"
"What does AC and DC stand for? - CORRECT ANSWER Alternating current and direct current"
"Electrical current flowing through a conductor produces a(n)______ field - CORRECT
ANSWER Magnetic"
"What is the difference between direct current and alternating current? - CORRECT ANSWER
Direct current flows only in one directon whule alternating changes directions constantly"
"The three major parts of a transistor are - CORRECT ANSWER the collector, the emitter, and
the base"
"Identify this symbol: - CORRECT ANSWER Inductor"
"Identify this symbol: - CORRECT ANSWER DC supply"
"Identify this symbol: - CORRECT ANSWER fixed resistor"
"A(n) _____ serves the same function as a fuse but can be used multiple times - CORRECT
ANSWER Circuit breaker"
"does a battery supply AC or DC current? - CORRECT ANSWER DC"
"Identify this symbol: - CORRECT ANSWER Capacitor"
"What does an ammeter do? - CORRECT ANSWER measures electrical current"
"Resistance can be measured using a device called a(n) ______ - CORRECT ANSWER
ohmmeter"
"What is a short circuit? - CORRECT ANSWER when a load is bypassed by a conductor, allowing
more current to flow through the circuit" "What three things must be present before combustion can occur in an internal combustion
engines? - CORRECT ANSWER Inline, horizontally opposed, V-type"
"What are TDC and BDC? - CORRECT ANSWER top dead center; bottom dead center"
"What are the two advantages of a four valve cylinder head over a two valve cylinder head? -
CORRECT ANSWER Higher engine operation speed, and more complete combustion of air-fuel
mixture"
"25 degrees BTDC (before top dead center) is an example of ________ ignition timing. -
CORRECT ANSWER advanced ignition time"
"what are two likely causes of pre-ignition - CORRECT ANSWER a glowing spark, a hot piece of
carbon" "The transaxle in a front-wheel drive vehicle combines which two components that are normally
distinct in a rear-wheel drive vehicle? - CORRECT ANSWER Transmission, Drive axle"
"The _____ allows the left and right wheels to turn at different speeds while cornering -
CORRECT ANSWER differential"
"What does an automatic transmission use instead of a clutch? - CORRECT ANSWER Torque
converter"
"The ______ generates the fluid pressure to operate the brake assemblies at the wheels -
CORRECT ANSWER Master cylinder"
"Spent fuel gases exit the cylinder and pass into the _______ - CORRECT ANSWER Exhaust
manifold"
"Diesel engines lack a _____ (a common element in gasoline-burning engines). - CORRECT
ANSWER Spark ignition system"
"Does an alternator produce DC or AC power? - CORRECT ANSWER AC"
"What does a camshaft do? - CORRECT ANSWER opens and closes cylinders' intake and
exhaust valves"
"the low-voltage winding in a car's ignition system is called the ________ - CORRECT ANSWER
Primary coil winding"
"What is chiefly responsible for generating fluid pressure to operate a car's brakes? - CORRECT
ANSWER The master cylinder"
"_______ work by adjusting the brake pressure in each wheel depending on the wheel's speed -
CORRECT ANSWER Anti-lock breaks"
"The outer shell of an atom is known as its _______ - CORRECT ANSWER valence shell"
"Frequency is usually measured in _______ - CORRECT ANSWER Hertz"
"in an atom, protons have a(n) ________ charge, while electrons have a(n) _________ charge -
CORRECT ANSWER Positive, Negative"
"Electrons orbit an atom in a set of layers or levels called ______ - CORRECT ANSWER shells"
"A(n) _______ is a subatomic particle that bears no charge - CORRECT ANSWER neutron"
"A level pivot upon a(n) ________ - CORRECT ANSWER Fulcrum"
"On horizontal surfaces, the normal force is usually equal to _________ - CORRECT ANSWER
The weight of the object"
"Slippery surfaces have _______ coefficients of both kinetic and static friction - CORRECT
ANSWER low"
"What is the formula for calculating torque? - CORRECT ANSWER T = rF,"
"Define mechanical advantages - CORRECT ANSWER mechanical advantage is the advantage
gained by using a mechanism to help transmit force" "In a wheel and axle arrangement, force is usually applied to the larger/smaller wheel in order to
move the larger/smaller wheel. - CORRECT ANSWER Larger, smaller"
"When two or more pulleys are arranged to work together, the resulting apparatus is called a
__________ - CORRECT ANSWER Block and tackle"
"What are the two types of mechanical energy - CORRECT ANSWER kinetic and potential"
"Increase the length of a wedge relative to its height _______ the mechanical advantage provided
by the wedge - CORRECT ANSWER Increases"
"What is the formula for calculating kinetic energy? - CORRECT ANSWER KE = 1/2mv^2"
"______ friction prevents an object from moving unless overcome by a sufficiently large force -
CORRECT ANSWER Static"
"a pulley changes the ________ but not the magnitude of a force - CORRECT ANSWER
direction" "for any given surface, the coefficient of ________ friction is higher than the coefficient of
_________ friction - CORRECT ANSWER Static, kinetic"
"How is the efficiency of a machine defined? - CORRECT ANSWER how much force inputted
into the machine is turned into movement or force" "A ________ is a type of inclined plane that can be moved in order to gain mechanical advantage
in lifting, splitting, or tightening objects - CORRECT ANSWER wedge"
"Potential energy derives form what and has the potential to do what? - CORRECT ANSWER
the shape of the object and the potential to be converted to kinetic energy"
"a wheel and axle arrangement links two wheels of different ________ - CORRECT ANSWER
sizes"
"What is the formula for calculating gravitational potential energy? - CORRECT ANSWER PE =
mgh"
"What is the formula for calculating friction? - CORRECT ANSWER Ff = u x Fn"
"What is the formula for calculating pressure applied evenly to a surface? - CORRECT ANSWER
P = F/A"
"What primarily determines the mechanical advantages of a block and tackle? - CORRECT
ANSWER The number of pulleys"
"_____ is the common term for the force that opposes movement through air or liquid. -
CORRECT ANSWER Drag"
“What is the Kuiper belt? - CORRECT ANSWER a region of the solar system beginning just
beyond the orbit of Neptune that contains many icy comets"
"What organ produces bile? - CORRECT ANSWER liver"
"What is the name of the two largest veins in the body - CORRECT ANSWER vena cavae"
"In the metric system the basic unit of length is the - CORRECT ANSWER Meter"
"What type of star is the sun - CORRECT ANSWER yellow dwarf"
"Our solar system's asteroid belt lies between the orbits of - CORRECT ANSWER Mars and
Jupiter"
"A lunar eclipse occurs when - CORRECT ANSWER Earth passes between the moon and the
sun."
"What does DNA stand for - CORRECT ANSWER Deoxyribose Nucleic Acid"
"Absolute zero expressed in Degrees celsius is - CORRECT ANSWER -273 C"
"Define atomic mass - CORRECT ANSWER Number of protons and neutrons"
"How is gear ratio determined? - CORRECT ANSWER Larger gear teeth number with smaller
gear"
"Is strep throat caused by a bacterium or a virus - CORRECT ANSWER bacteria"
"Small objects that enter the earth's surface and burn up creating a visible bright streak in a night
sky is called - CORRECT ANSWER meteors"
"Can light travel through a vacuum? - CORRECT ANSWER Yes"
"What are some minerals that are required for proper nutrition - CORRECT ANSWER calcium,
magnesium and iron"
"The process by which a cell divides into two daughter cells is called - CORRECT ANSWER
Mitosis"
"Define Genotype - CORRECT ANSWER genetic makeup of an organism"
"Gametes are called - CORRECT ANSWER haploids"
"If one battery's terminal supplies greater voltage than that of another battery, the first battery
terminal has more - CORRECT ANSWER Electrons"
"Resistance is measured in - CORRECT ANSWER Ohms"
"Voltage and current are directly/indirectly proportional - CORRECT ANSWER Directly"
"aside from oxyacetylene welding, the other major type of welding is ________ - CORRECT
ANSWER Electric arc welding"
"What does a crankshaft do? - CORRECT ANSWER A crankshaft converts the linear motion of
the piston into rotary motion."
"Why is a coolant recovery reservoir necessary? - CORRECT ANSWER To capture overflow
when the radiator pressure cap valve opens"
"What are the two major types of engine cooling systems? - CORRECT ANSWER Air- cooling
and water cooling" "The ____ is the main component of the charging system and converts mechanical energy into
electrical energy - CORRECT ANSWER Alternator"
"Before soldering an electrical connection, it is wise to make a(n) ________ connection. -
CORRECT ANSWER Mechanical connection"
"A welder will require more electric current if either the ____ or the ____ is larger. - CORRECT
ANSWER Pieces being welded; Electrode in use"
"Why must welders wear helmets and protective clothing? - CORRECT ANSWER Protection
from Ultraviolet"
"How would you increase the mechanical advantage of a second class lever - CORRECT
ANSWER By moving the object to be lifted closer to the fulcrum or making the lever longer"
"How would you increase the mechanical advantage of a first-class lever - CORRECT ANSWER
By increasing the ratio of the distance between the force and the fulcrum to the distance between the fulcrum and the object to be lifted"
