ASVAB Practice Test 1 Exam Questions with 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