ASVAB practice test 1 exam questions and
correct answers.
An induction clutch works by - Correct Answer 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 Answer 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 -
Correct Answer 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? - Correct Answer r = DR/d, r=16.6666
Springs used in machines are usually made of - Correct Answer steel
A clutch is a type of - Correct Answer coupling
A single block-and-fall is called a - Correct Answer runner
The mechanical advantage of the block-and-tackle arrangement shown below is - Correct
Answer 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? - Correct Answer 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 Answer 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? - Correct Answer Silver is the best conductor, so it becomes hottest
If an alternator overcharges the battery, a likely explanation is - Correct Answer The
voltage regulator isn't working properly
A primary advantage of the electronic ignition system over conventional ignition systems is
- Correct Answer The electronic ignition system provides a higher voltage
The primary purpose of piston rings is to - Correct Answer seal the combustion chamber
and allow the pistons to move freely
Connecting rods connect the piston to the - Correct Answer crankshaft
, In an overhead valve system (OHV), what mechanism opens and closes the valves? -
Correct Answer rocker arms
The difference between a single-acting and an opposed piston engine is - Correct Answer
Single-acting piston engines have one piston per cylinder and opposed piston engines
have two
A car equipped with limited-slip differential - Correct Answer transfers the most driving
force to the wheel with the greatest amount of traction
Soft brake-pedal movement can be caused by - Correct Answer air in the hydraulic brake
system
The safest way to make a hole in sheet metal is to - Correct Answer punch it using a metal
punch
Nail sets are used to - Correct Answer set nails below the surface of the wood
A ripsaw cuts - Correct Answer with the grain of the wood
A bucking bar is used to - Correct Answer drive rivets
Washers that have teeth all around the circumference to prevent them from slipping are
called - Correct Answer shakeproof washers
Ohm's law states - Correct Answer Voltage = Current × Resistance. V=IR
An electromagnetic-induction device usually has which of the following materials in its core
- Correct Answer iron
How many diodes should you expect to find in a bridge rectifier? - Correct Answer A bridge
rectifier is also known as a full wave rectifier, usually containing 4 diodes
Another name for cycles per second is: - Correct Answer hertz
When current flows through a wire, the following influences are present - Correct Answer
voltage, ohms, amperes
Millihenries are related to - Correct Answer inductors
Radar can operate at frequencies as high as - Correct Answer 100,000 MHz
Radio waves travel - Correct Answer at the speed of light
correct answers.
An induction clutch works by - Correct Answer 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 Answer 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 -
Correct Answer 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? - Correct Answer r = DR/d, r=16.6666
Springs used in machines are usually made of - Correct Answer steel
A clutch is a type of - Correct Answer coupling
A single block-and-fall is called a - Correct Answer runner
The mechanical advantage of the block-and-tackle arrangement shown below is - Correct
Answer 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? - Correct Answer 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 Answer 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? - Correct Answer Silver is the best conductor, so it becomes hottest
If an alternator overcharges the battery, a likely explanation is - Correct Answer The
voltage regulator isn't working properly
A primary advantage of the electronic ignition system over conventional ignition systems is
- Correct Answer The electronic ignition system provides a higher voltage
The primary purpose of piston rings is to - Correct Answer seal the combustion chamber
and allow the pistons to move freely
Connecting rods connect the piston to the - Correct Answer crankshaft
, In an overhead valve system (OHV), what mechanism opens and closes the valves? -
Correct Answer rocker arms
The difference between a single-acting and an opposed piston engine is - Correct Answer
Single-acting piston engines have one piston per cylinder and opposed piston engines
have two
A car equipped with limited-slip differential - Correct Answer transfers the most driving
force to the wheel with the greatest amount of traction
Soft brake-pedal movement can be caused by - Correct Answer air in the hydraulic brake
system
The safest way to make a hole in sheet metal is to - Correct Answer punch it using a metal
punch
Nail sets are used to - Correct Answer set nails below the surface of the wood
A ripsaw cuts - Correct Answer with the grain of the wood
A bucking bar is used to - Correct Answer drive rivets
Washers that have teeth all around the circumference to prevent them from slipping are
called - Correct Answer shakeproof washers
Ohm's law states - Correct Answer Voltage = Current × Resistance. V=IR
An electromagnetic-induction device usually has which of the following materials in its core
- Correct Answer iron
How many diodes should you expect to find in a bridge rectifier? - Correct Answer A bridge
rectifier is also known as a full wave rectifier, usually containing 4 diodes
Another name for cycles per second is: - Correct Answer hertz
When current flows through a wire, the following influences are present - Correct Answer
voltage, ohms, amperes
Millihenries are related to - Correct Answer inductors
Radar can operate at frequencies as high as - Correct Answer 100,000 MHz
Radio waves travel - Correct Answer at the speed of light
