Download FCTC TEST PREP QUESTIONS WITH 100% CORRECT ANSWERS 2024 and more Exams Community Health in PDF only on Docsity! FCTC TEST PREP QUESTIONS WITH 100% CORRECT ANSWERS 2024 two or more pulleys in common to a belt. - Correct Answer-A belt and pulley system is characterized by mechanical power, torque, and speed to be transmitted across axles - Correct Answer-What does a belt and pulley system allow for? if the pulleys are different diameters - Correct Answer-How is mechanical advantage realized? a wheel on an axle or shaft that is designed to support movement and change of direction of a cable or belt along its circumference - Correct Answer-what is a pulley? lift loads apply forces trasmit power - Correct Answer-Why are pulleys used? pg. 1 professoraxel rope, cable, belt or chain that runs over the pulley inside the groove - Correct Answer-What is usually the drive element of a pulley? a block and tackle in order to provide mechanical advantage to apply large forces - Correct Answer-Pulleys are assembled to form what the use of a single continuous rope to transmit a tension force around one or more pulleys to lift or move a load the rope may be a light line or a strong cable - Correct Answer- rope and pulley systems (block and tackle) are characterized by what? the number of parts of the rope that act on the load - Correct Answer-What is the mechanical advantage of a rope and pulley system if it does not dissipate or store energy? a machine consisting of a beam or rigid rod pivoted at a fixed hinge or fulcrum - Correct Answer-What is a lever? pg. 2 professoraxel Mechanical advantage is always less than 1 - Correct Answer- Examples of Class 3 levers Fulcrum in middle for 1st class Resistance is in the middle for the 2nd lever Effort is in the middle for the 3rd - Correct Answer-FRE 123 pressure created by the force of gravity and is a function of the difference in elevation between intake and output - Correct Answer-HEAD pounds per square inch - Correct Answer-Head is usually measured in 1 vertical foot= 0.433 pounds / square inch 1 PSI = 2.31 vertical feet - Correct Answer-Formula for determining head pressure Static pressure caused by the weight of water solely due to its height above the measuring point. - Correct Answer-Water head pressure is pg. 5 professoraxel they will be identical since only height is involved. - Correct Answer-What is greater? the pressure of a 40' lake or a 40' high thin tube filled with water? Measure the height of the water above the desire measuring point in inches or feet. Divide the depth in inches by 27.21 inches/psi or the depth in feet by 2.31 feet/psi which are the english unit conversion factors Result is water head pressure expressed in PSI - Correct Answer-Basic water head calculation: pg. 6 professoraxel
