Driver Operator Study State Questions and Answers 100% Pass

Driver Operator Study State Questions and Answers 100% Pass How much does 1 gallon of water weigh? - 8.35 pounds How many cubic inches does 1 gallon of water contain? - 231 cubic inches How many pounds does 1 cubic foot of water weigh? - 62.5 pounds How many gallons of water does 1 cubic foot contain? - 7.481 gallons How many cubic inches are there in 1 cubic foot? - 1,728 cubic inches A 1 foot high column of water exerts how much psi at it's base? - .434 psi How many feet will 1 psi of pressure raise a column of water? - 2.304 feet 1 inch of mercury is equal to how many inches of water? - 13.55 inches What is the symbol for inches of mercury? - HG How many feet is dependable lift? - 14.7 feet How many feet is theoretical lift? - 33.87 feet How can most apparatus or equipment failures be prevented? - By performing routine maintenance checks on a regular basis. Is exercising the volume-series control lever part of the daily apparatus inspection? - No Apparatus with water tanks of 1000 gallons or less must have a tank fill line of at least how many inches? - 1 inch 2 | P a g e Created by Katelyn Whitman © 2025, All Rights Reserved. 100% PASS GUARANTEE Apparatus with water tanks more than 1000 gallons must have a tank fill line of how many inches? - 2 inches What NFPA is the standard for automotive fire apparatus? - NFPA 1901 Industrial foam pumpers are built according to what NFPA numbers? - NFPA 11C NFPA 1901 At what height do elevating water devices typically range? - 50-75 feet During relay pumping, which pumper should be the largest capacity pumper? - The source pumper Relay pumping evolutions should be shut down at what pumper first? - The scene pumper Pumper capacities are set at draft with how many feet of lift? And through how many feet of hard suction? - 10 feet of lift 20 feet of hard suction Pumpers should flow how many psi at 100% capacity? - 150 psi Pumpers should flow how many psi at 70% capacity? - 200 psi Pumpers should flow how many psi at 50% capacity? - 250 psi Head pressure equals? - Back pressure What is the test performed at the factory or after delivery to assure the purchaser that the apparatus meets BID specifications? - Acceptance test Pressure supplied to a hose should not exceed that at which it is annually tested. True or False? - True Master streams have flows of over how many gpm? - 300 gpm 3 | P a g e Created by Katelyn Whitman © 2025, All Rights Reserved. 100% PASS GUARANTEE On a standpipe system, firefighters should disconnect house lines and use their own hoses. True or False? - True The maximum allowable pressure for a relay is how many psi? - 200 psi What is the friction loss for appliances with flows of less than 350 psi? - 0 psi What is the friction loss for appliances with flows of more than 350 psi? - 10 psi There is no "positive mechanical blockage" between the intake and discharge sides of a centrifugal pump. True or False? - True What is the most common reason for loss of prime? - An air leak