Couplings Study guides, Class notes & Summaries

What are the purposes of couplings? 13:1 - ANSWERSCouplings are used to join two shafts together & transmit power. What are the 4 main types of couplings? 13:1 - ANSWERS-rigid couplings -flexible couplings -universal joints (u-joints) -centrifugal What are the operative limits of rigid couplings? 13:2 - ANSWERS-misalignment must be less than bearing clearance -cannot have angular misalignment -thermal expansion is not present during operation. What are the 4 main types of rigid cou...

couplings are used to act as a safety device if torque overload occurs - Clutch ____ may remove a lockout on the power source of a piece of mechanical equipment - Only the person who installed the lockout A common sign of a misaligned coupling is - Excessive Vibration A gear is a wheel with ____ cut around its circumference - Teeth A machine shaft and bore should always be checked for out of round status before performing status what task? - Pressing a bearing A machine's moving componen...

IFSTA Chapter 12 and 13 Exam Questions and Verified Answers| 100% Correct QUESTION Which load allows hose from one side of a split hose bed to be used for a forward lay and the other side to be used for a reverse lay? Select one: a. Horseshoe load b. Accordion load c. Combination load d. Flat load Answer: c. Combination load QUESTION Which statement accurately describes organic damage to fire hose? Select one: a. When rubber-jacket hose is stored wet, it is at ri...

may remove the lockout on the power source of a piece of mechanical equipment - Only the person who installed the lockout a gear is a wheel with blank cut around its circumference - teeth a machine moving components slides over ate and drank bearing surface with only a little cushion between them - plane a machine's shaft and abortion always be checked 4 out of range status before performing what task - pressing a bearing AAA and blank bearing has an inner and outer race is that allow it...

may remove the lockout on the power source of a piece of mechanical equipment - Only the person who installed the lockout a gear is a wheel with blank cut around its circumference - teeth a machine moving components slides over ate and drank bearing surface with only a little cushion between them - plane a machine's shaft and abortion always be checked 4 out of range status before performing what task - pressing a bearing AAA and blank bearing has an inner and outer race is that allow it...

ASPE CPD Study Questions AH with complete solutions. Front - correct answer. Back What is the specific weight of water? - correct answer. 62.4 lbs per cubic foot What happens in a storm and sanitary system after it passes the water test? - correct answer. A smoke pressure test is recommended with a smoke pressure of 1 in wc to prove the system gas tight. Is an air test acceptable for a storm and sanitary system? - correct answer. Yes, if a water test is not poss...

IFSTA 7th edition chapter 12 "Fire Hose" What type of hose transports water from the pumping apparatus to the nozzle where it is applied to the fire? - ANSWER Attack hose A fire hose is labeled or describe according to the size of its - ANSWER Inside diameter and length Which type of hose is designed to connect the pumping apparatus to a pressurized water source - ANSWER ...

Driver/Pumper Operator Coefficient for 1 3/4" with 1 1/2" couplings - correct answer 15.5 Coefficient for 2" - correct answer 8 Coefficient for 2 1/2" - correct answer 2 Coefficient for 3" with 2 1/2" couplings - correct answer .8 Coefficient for 3" with 3" couplings - correct answer .677 Coefficient for 4" - correct answer .2 Coefficient for 5" - correct answer .08 FL - correct answer Friction Loss in PSI C - correct answer Friction Loss coefficient Q - cor...

Driver/Pumper Operator Complete Solutions 100% Solved Coefficient for 1 3/4" with 1 1/2" couplings ️️15.5 Coefficient for 2" ️️8 Coefficient for 2 1/2" ️️2 Coefficient for 3" with 2 1/2" couplings ️️.8 Coefficient for 3" with 3" couplings ️️.677 Coefficient for 4" ️️.2 Coefficient for 5" ️️.08 FL ️️Friction Loss in PSI C ️️Friction Loss coefficient Q ️️Flow rate in hundreds of GPM (flow/100) L ️️Hose length in hundreds of feet (L...

Reduced water volume or pressure from hydrants can result from: open water mains. open isolation valves. greater demand than the system can provide. the use of both wet-barrel and dry-barrel hydrants in the same system. - correct answer -greater demand than the system can provide. Standard fire hydrants have at least one large steamer connection and: four hose outlet nozzles for 2 1/2-inch (65 mm) couplings. one smaller steamer connection. two smaller steamer connections. two hose out...