Potential energy is most nearly associated with ________ .
force
PHEP Ch2 p.1
To move a mass, we must exert _________ upon the mass or expend __________ .
Force, Enegery
PHEP Ch2 p. 1
______ is energy available for future use.
potential energy
PHEP Ch2 p. 1
Falling water is associated with what type of energy?
kinetic energy
PHEP Ch2 p.2
The foot-pound is a unit of ______.
work
PHEP Ch2 p.3
The accomplishment of force acting through a distance is associated with…
work (Work = Force x Distance)
PHEP Ch2 p.3
Work = _______ x ________ .
Force x Distance
PHEP Ch2 p. 3
The rate at which work is done is called…
power
PHEP Ch2 p. 5
How much power does 1 HP equal? (give ft. lbs and watts)
550 ft. lbs per second / 746 watts
PHEP Ch2 p. 5
To transfer kinetic energy contained in falling water to mechanical energy at the blades of a hydraulic turbine involves the application of which law(s) of motion?
all three laws of motion
PHEP Ch2 p.7
What is the acceleration of a freely falling body due to the force of gravity?
32 feet per second each second
PHEP Ch2 p. 9
In five seconds of fall, a falling body will fall a total of ________ ft.
400ft
32 x t squared/ 2
PHEP Ch2 p. 9
Velocity = acceleration x _________.
Velocity = acceleration x time
PHEP Ch2 p. 9
(travel) Distance = _________ x __________ / 2
Acceleration x Time squared / 2 (d = 1/2 x at2)
PHEP Ch2 p. 9
The theoretical velocity of a freely falling body is equal to ________ . (equation)
√2gh
PHEP Ch2 p. 9
Velocity of a freepy falling body is = _______ x time
velocity = g (32 ft per second) x time
PHEP Ch2 p. 9
When you double the the velocity of a stream of water, the weight of piece of material it can suspend is multiplied by ______ .
16
PHEP Ch2 p. 10
What equation can be used to find the quantity of water flowing past a given cross section of pipe?
q = Av (Rate of CFS = Cross sectional area x average velocity of cross sectional area)
PHEP Ch2 p. 11
Increasing the velocity of falling water will __________________________________________________________ .
Increase the available kinetic energy
PHEP Ch2 p. 11
When the same amount of liquid flows past A and B, and the area at B decreases, the liquid must gain ______.
velocity
q=Av (rate of flow of a liquid)
PHEP Ch2 p.16
Disregarding all other losses, rate of flow of a liquid is the product of _________ x _________.
Area, Velocity
PHEP Ch2 p. 16
If the diameter of a pipe is decreased uniformly at its termination and with no change in pressure head, the exit velocity of the liquid is ______________ .
increased
PHEP Ch2 p. 16
When applied to a moving liquid mass, the expression v2 / 2g refers to…
velocity head
PHEP Ch2 p.18
What is the equation for friction loss in a pipe? (hf = ? )
hf = f x 1/D x V2/2g (Friction loss in feet = Length/Diameter x Velocity^2/32.2ft per sec)
PHEP Ch2 p. 18
