ASVAB practice test 1 Questions and answers, 100% Accurate, graded A+

ASVAB practice test 1 Questions and answers, 100% Accurate, graded A+ 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 b ...

ASVAB practice test 1 Questions and answers, 100% Accurate, graded A+ 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 Radio waves travel - ✔✔-at the speed of light Changing alternating current to direct current is called - ✔✔-AC to DC is a process called rectification Insulated fittings can be used to splice wires, thus eliminating the need for - ✔✔-soldering the wires together How many wires do serial cables used on computers have? - ✔✔-9 To produce greater storage of electrons and more capacitance, capacitors should - ✔✔-be connected in parallel A light bulb is 60 watts. Operated at