EXAMINATION TEST COMPLETE
QUESTIONS AND ANSWERS FULL
SOLUTION VERIFIED
●● Friction loss equation
Answer: FL=CQ*2L
C=hose coefficient
Q=GPM/100
L=length ft/100
●● Condensed Q
Answer: Supply line's only
3"=Q*2
4"=Q*2/5
5"=Q*5/15
●● Pressure
Answer: Series/psi
High pressure's same GPM
, ●● Volume
Answer: Capacity/parallel/RPM
Same pressure's high GPM
●● Reverse lay
Answer: Drop hose/supplies at scene and drive apparatus to water source
●● Forward lay
Answer: Drop supply line at hydrant and drive apparatus to the scene
●● Head pressure
Answer: 100ft elevation=43.4psi
●● Residual pressure
Answer: Amount of pressure not used to overcome friction loss/gravity
●● Normal operating pressure
Answer: Pressure found in water distribution systems during normal
consumption
●● Static pressure
Answer: Stored potential energy available to force water through pipes,
hose and adapters