ASVAB practice
An induction clutch works by correct answers
magnetism
If a first class lever with a resistance arm measuring 2 feet and an effort arm
measuring
8 feet are being used, what's the mechanical advantage? correct answers
LengthArm
Effort of ÷ Length of Resistance Arm. MA = 8
÷2=4
The force produced when a boxer's hand hits a heavy bag and "bounces" off
it is called
correct answers
recoil
If Gear 1 has 25 teeth and Gear 2 has 15 teeth, how many revolutions
does Gear
make 2
for every 10 revolutions Gear 1 makes? correct answers r = DR/d,
r=16.6666
Springs used in machines are usually made of correct
answers steel
A clutch is a type of correct answers
coupling
A single block-and-fall is called a correct answers
runner
The mechanical advantage of the block-and-tackle arrangement shown below
is correct2. Because this block-and-tackle arrangement merely changes the
answers
direction
the pull, itofhas a mechanical advantage of
only 2.
If a house key, a wooden spoon, a plastic hanger, and a wool jacket are all
the same
temperature, which one feels the coldest? correct answers The key will
feel coldest
because metal is a better conductor than the other
materials
A way to determine the amount of power being used is? correct answers
Thedetermining
for formula power is Power = Work ÷
Time.
A wood tool, a silver tool, and a steel tool are placed in boiling water for
cleaning.
tool gets theWhichhottest? correct answers Silver is the best conductor, so it
hotte
becomes
st
If an alternator overcharges the battery, a likely explanation is correct
answersregulator
voltage The isn't working
properly
A primary advantage of the electronic ignition system over conventional
ignition
is correctsystems
answers The electronic ignition system provides a
higher voltage
The primary purpose of piston rings is to correct answers seal the
combustion
and allow the chamber
pistons to move
freely
, Connecting rods connect the piston to the correct answers
crankshaft
In an overhead valve system (OHV), what mechanism opens and closes
the valves?
correct answers rocker
arms
The difference between a single-acting and an opposed piston engine
is correctSingle-acting piston engines have one piston per cylinder and
answers
opposedhave
engines piston
two
A car equipped with limited-slip differential correct answers transfers the
most driving
force to the wheel with the greatest amount of
traction
Soft brake-pedal movement can be caused by correct answers air in the
hydraulic
brake
system
The safest way to make a hole in sheet metal is to correct answers punch
it using a
metal
punch
Nail sets are used to correct answers set nails below the surface of
the wood
A ripsaw cuts correct answers with the grain of
the wood
A bucking bar is used to correct answers drive
rivets
Washers that have teeth all around the circumference to prevent them from
slippingcorrect
called are answers shakeproof
washers
Ohm's law states correct answers Voltage = Current ×
Resistance. V=IR
An electromagnetic-induction device usually has which of the following
materials
core in its
correct answers
iron
How many diodes should you expect to find in a bridge rectifier? correct
answers
bridge A
rectifier is also known as a full wave rectifier, usually
containing 4 diodes
Another name for cycles per second is: correct
answers hertz
When current flows through a wire, the following influences are
present correct
answers voltage, ohms,
amperes
Millihenries are related to correct answers
inductors
Radar can operate at frequencies as high as correct answers
100,000 MHz
Radio waves travel correct answers at the speed
of light
An induction clutch works by correct answers
magnetism
If a first class lever with a resistance arm measuring 2 feet and an effort arm
measuring
8 feet are being used, what's the mechanical advantage? correct answers
LengthArm
Effort of ÷ Length of Resistance Arm. MA = 8
÷2=4
The force produced when a boxer's hand hits a heavy bag and "bounces" off
it is called
correct answers
recoil
If Gear 1 has 25 teeth and Gear 2 has 15 teeth, how many revolutions
does Gear
make 2
for every 10 revolutions Gear 1 makes? correct answers r = DR/d,
r=16.6666
Springs used in machines are usually made of correct
answers steel
A clutch is a type of correct answers
coupling
A single block-and-fall is called a correct answers
runner
The mechanical advantage of the block-and-tackle arrangement shown below
is correct2. Because this block-and-tackle arrangement merely changes the
answers
direction
the pull, itofhas a mechanical advantage of
only 2.
If a house key, a wooden spoon, a plastic hanger, and a wool jacket are all
the same
temperature, which one feels the coldest? correct answers The key will
feel coldest
because metal is a better conductor than the other
materials
A way to determine the amount of power being used is? correct answers
Thedetermining
for formula power is Power = Work ÷
Time.
A wood tool, a silver tool, and a steel tool are placed in boiling water for
cleaning.
tool gets theWhichhottest? correct answers Silver is the best conductor, so it
hotte
becomes
st
If an alternator overcharges the battery, a likely explanation is correct
answersregulator
voltage The isn't working
properly
A primary advantage of the electronic ignition system over conventional
ignition
is correctsystems
answers The electronic ignition system provides a
higher voltage
The primary purpose of piston rings is to correct answers seal the
combustion
and allow the chamber
pistons to move
freely
, Connecting rods connect the piston to the correct answers
crankshaft
In an overhead valve system (OHV), what mechanism opens and closes
the valves?
correct answers rocker
arms
The difference between a single-acting and an opposed piston engine
is correctSingle-acting piston engines have one piston per cylinder and
answers
opposedhave
engines piston
two
A car equipped with limited-slip differential correct answers transfers the
most driving
force to the wheel with the greatest amount of
traction
Soft brake-pedal movement can be caused by correct answers air in the
hydraulic
brake
system
The safest way to make a hole in sheet metal is to correct answers punch
it using a
metal
punch
Nail sets are used to correct answers set nails below the surface of
the wood
A ripsaw cuts correct answers with the grain of
the wood
A bucking bar is used to correct answers drive
rivets
Washers that have teeth all around the circumference to prevent them from
slippingcorrect
called are answers shakeproof
washers
Ohm's law states correct answers Voltage = Current ×
Resistance. V=IR
An electromagnetic-induction device usually has which of the following
materials
core in its
correct answers
iron
How many diodes should you expect to find in a bridge rectifier? correct
answers
bridge A
rectifier is also known as a full wave rectifier, usually
containing 4 diodes
Another name for cycles per second is: correct
answers hertz
When current flows through a wire, the following influences are
present correct
answers voltage, ohms,
amperes
Millihenries are related to correct answers
inductors
Radar can operate at frequencies as high as correct answers
100,000 MHz
Radio waves travel correct answers at the speed
of light
