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ASVAB Practice Test 1: Physics and Mechanics, Exams of Science education

Chaminade UniversityScience education

A practice test for the armed services vocational aptitude battery (asvab), focusing on physics and mechanics. The test covers topics such as mechanical advantage, gears, springs, clutches, and various engineering concepts. It also includes questions on electrical and electronic components, as well as vocabulary words related to these subjects.

Typology: Exams

2023/2024

Available from 05/08/2024

Tutor001
Tutor001 🇺🇸

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ASVAB practice test 1 Updated
1. An induction clutch works by - <answers >magnetism
2. 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? -
<answers >Length of Effort Arm ÷ Length of Resistance Arm. MA = 8 ÷ 2 = 4
3. The force produced when a boxer's hand hits a heavy bag and "bounces" off
it is called - <answers >recoil
4. 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? - <answers >r = DR/d,
r=16.6666
5. Springs used in machines are usually made of - <answers >steel
6. A clutch is a type of - <answers >coupling
7. A single block-and-fall is called a - <answers >runner
8. The mechanical advantage of the block-and-tackle arrangement shown
below is - <answers >2. Because this block-and-tackle arrangement merely
changes the direction of the pull, it has a mechanical advantage of only 2.
9. If a house key, a wooden spoon, a plastic hanger, and a wool jacket are all
the same temperature, which one feels the coldest? - <answers >The key
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Download ASVAB Practice Test 1: Physics and Mechanics and more Exams Science education in PDF only on Docsity!

ASVAB practice test 1 Updated

  1. An induction clutch works by - magnetism
  2. 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
  3. The force produced when a boxer's hand hits a heavy bag and "bounces" off it is called - recoil
  4. 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.
  5. Springs used in machines are usually made of - steel
  6. A clutch is a type of - coupling
  7. A single block-and-fall is called a - runner
  8. 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.
  9. 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 10.A way to determine the amount of power being used is? - The formula for determining power is Power = Work ÷ Time. 11.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 12.If an alternator overcharges the battery, a likely explanation is - **<answers

** The voltage regulator isn't working properly 13.A primary advantage of the electronic ignition system over conventional ignition systems is - The electronic ignition system provides a higher voltage 14.The primary purpose of piston rings is to - seal the combustion chamber and allow the pistons to move freely 15.Connecting rods connect the piston to the - crankshaft 16.In an overhead valve system (OHV), what mechanism opens and closes the valves? - rocker arms 17.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

27.How many diodes should you expect to find in a bridge rectifier? - **<answers

** A bridge rectifier is also known as a full wave rectifier, usually containing 4 diodes 28.Another name for cycles per second is: - hertz 29.When current flows through a wire, the following influences are present - voltage, ohms, amperes 30.Millihenries are related to - inductors 31.Radar can operate at frequencies as high as - 100,000 MHz 32.Radio waves travel - at the speed of light 33.Changing alternating current to direct current is called - AC to DC is a process called rectification 34.Insulated fittings can be used to splice wires, thus eliminating the need for - soldering the wires together 35.How many wires do serial cables used on computers have? - 9 36.To produce greater storage of electrons and more capacitance, capacitors should - be connected in parallel

37.A light bulb is 60 watts. Operated at 120 volts, how much current does it draw? - Power = Current × Voltage or, written another way, Current = Power/Voltage. 60/120 = 0.5 ampere 38.A fuse with a higher-than-required rating used in an electrical circuit - may not work properly 39.Neutral wire is always: - whitish or natural 40.To measure electrical power, you would use a - wattmeter 41.secure - safe 42.assimilate - absorb 43.proficient - adept 44.plenary - full 45.goad - incite 46.headlong - recklessly 47.flagrant - glaring

60.to commission - to authorize 61.succinct - concise 62.demise - death 63.burrow - nestle 64.prevails - persists 65.contravene - obstruct 66.chasm - hole 67.susceptible - gullible 68.A series of cell divisions that results in the formation of an embryo is called - mitosis 69.The process by which energy is provided at the cellular level is called - metabolism 70.Light waves travel at a rate of about - 186,000 mps 71.The largest moon in the solar system is - Ganymede

72.Which inorganic substance is present in the greatest quantity inside animal cells? - water 73.Cell protoplasm is made up mostly of: - water 74.The chamber of the heart that pumps blood to the lungs is called the - right ventricle 75.The atomic number of an atom is determined by - # of protons 76.How many planets in the solar system have rings? - 4 77.Not counting the sun, the closest star to the Earth is - Proxima Centauri