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ASVAB practice test 1/77 Complete Questions and Answers
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- ASVAB practice test 1
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- ASVAB Practice Test 1
ASVAB practice test 1/77 Complete Questions and Answers
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ASVAB practice test 1/77 Complete Questionsand Answers
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
-How many diodes should you expect to find in a bridge rectifier? - -A bridge
rectifier is also known as a full wave rectifier, usually containing 4 diodes
-Another name for cycles per second is: - -hertz
-When current flows through a wire, the following influences are present - -
voltage, ohms, amperes
-Millihenries are related to - -inductors
-Radar can operate at frequencies as high as - -100,000 MHz
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