ASVAB practice test 1
An induction clutch works by –
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? –
Length of Effort Arm ÷ 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
- recoil
If Gear 1 has 25 teeth and Gear 2 has 15 teeth, how many revolutions does Gear 2
make for every 10 revolutions Gear 1 makes? –
r = DR/d, r=16.6666
Springs used in machines are usually made of –
steel
A clutch is a type of –
coupling
A single block-and-fall is called a –
runner
The mechanical advantage of the block-and-tackle arrangement shown below is –
2. Because this block-and-tackle arrangement merely changes the direction of
the pull, it has 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? –
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? –
The formula for determining power is Power = Work ÷ Time.
A wood tool, a silver tool, and a steel tool are placed in boiling water for cleaning. Which
tool gets the hottest? –
Silver is the best conductor, so it becomes hottest
If an alternator overcharges the battery, a likely explanation is –
The voltage regulator isn't working properly
, A primary advantage of the electronic ignition system over conventional ignition systems
is –
The electronic ignition system provides a higher voltage
The primary purpose of piston rings is to –
seal the combustion chamber and allow the pistons to move freely
Connecting rods connect the piston to the –
crankshaft
In an overhead valve system (OHV), what mechanism opens and closes the valves? –
rocker arms
The difference between a single-acting and an opposed piston engine is –
Single-acting piston engines have one piston per cylinder and opposed piston
engines have two
A car equipped with limited-slip differential –
transfers the most driving force to the wheel with the greatest amount of traction
Soft brake-pedal movement can be caused by –
air in the hydraulic brake system
The safest way to make a hole in sheet metal is to –
punch it using a metal punch
Nail sets are used to –
set nails below the surface of the wood
A ripsaw cuts –
with the grain of the wood
A bucking bar is used to –
drive rivets
Washers that have teeth all around the circumference to prevent them from slipping are
called –
shakeproof washers
Ohm's law states –
Voltage = Current × Resistance. V=IR
An electromagnetic-induction device usually has which of the following materials in its
core –
iron
An induction clutch works by –
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? –
Length of Effort Arm ÷ 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
- recoil
If Gear 1 has 25 teeth and Gear 2 has 15 teeth, how many revolutions does Gear 2
make for every 10 revolutions Gear 1 makes? –
r = DR/d, r=16.6666
Springs used in machines are usually made of –
steel
A clutch is a type of –
coupling
A single block-and-fall is called a –
runner
The mechanical advantage of the block-and-tackle arrangement shown below is –
2. Because this block-and-tackle arrangement merely changes the direction of
the pull, it has 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? –
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? –
The formula for determining power is Power = Work ÷ Time.
A wood tool, a silver tool, and a steel tool are placed in boiling water for cleaning. Which
tool gets the hottest? –
Silver is the best conductor, so it becomes hottest
If an alternator overcharges the battery, a likely explanation is –
The voltage regulator isn't working properly
, A primary advantage of the electronic ignition system over conventional ignition systems
is –
The electronic ignition system provides a higher voltage
The primary purpose of piston rings is to –
seal the combustion chamber and allow the pistons to move freely
Connecting rods connect the piston to the –
crankshaft
In an overhead valve system (OHV), what mechanism opens and closes the valves? –
rocker arms
The difference between a single-acting and an opposed piston engine is –
Single-acting piston engines have one piston per cylinder and opposed piston
engines have two
A car equipped with limited-slip differential –
transfers the most driving force to the wheel with the greatest amount of traction
Soft brake-pedal movement can be caused by –
air in the hydraulic brake system
The safest way to make a hole in sheet metal is to –
punch it using a metal punch
Nail sets are used to –
set nails below the surface of the wood
A ripsaw cuts –
with the grain of the wood
A bucking bar is used to –
drive rivets
Washers that have teeth all around the circumference to prevent them from slipping are
called –
shakeproof washers
Ohm's law states –
Voltage = Current × Resistance. V=IR
An electromagnetic-induction device usually has which of the following materials in its
core –
iron
