ASVAB practice test 1 |QUESTIONS &
ANSWERS| ALREADY PASSED|
VERIFIED & UPDATED
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
ANSWERS| ALREADY PASSED|
VERIFIED & UPDATED
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
