Millwright - 2nd Year: Dynamic Pumps
Exam Questions and Answers 100%
score Latest update 2026
How does a dynamic pump differ from positive displaement pump?
-
correct answer ✅They have no seal between the suction and
discharge sides, and they prodice a continuous, non-pulsating flow
of liquid
What are the typical units of density? -
correct answer ✅Typical units of measurement include
pounds/cubic foor (imperial) and kilograms/cubic metre (metric)
What is density? -
correct answer ✅The mass or weight of a substance per unit
volume.
What is specific gravity? -
correct answer ✅The ratio of the density of a substance to that of
water
What is pressure? -
correct answer ✅A measure of intensity of effort described as
force per unit area
,Millwright - 2nd Year: Dynamic Pumps
Exam Questions and Answers 100%
score Latest update 2026
What are the typical units for pressure -
correct answer ✅Pounds per square inch (imperial) and Newtons
per square metre (metric)
The formula used to determin pressure is: -
correct answer ✅Pressure = force / area
What is gauge pressure? -
correct answer ✅A pressure reading using atmospheric pressure
as a reference point (psig or kPa gauge)
What is absolute pressure? -
correct answer ✅A pressure reading using absolute zero as as
reference point (psia or kPa absolute)
What is atmospheric pressure? -
correct answer ✅The portion of the weight of the earth's
atmosphere that bears down on an area of one square inch.
,Millwright - 2nd Year: Dynamic Pumps
Exam Questions and Answers 100%
score Latest update 2026
What is the averaged atmospheric pressure at sea level? -
correct answer ✅14.7 psia (101.325 kPa absolute)
AS you rise in altitude, atmospheric pressure
___________________. -
correct answer ✅decreases
What is vacuum pressure? -
correct answer ✅Pressure below atmospheric pressure
What units is vacuum pressure usually expressed as? -
correct answer ✅inches or mm of mercury
What is head pressure? -
correct answer ✅The height in feet of a column of water that is
one square foot at the base
How is head pressure converted to psi? -
correct answer ✅psi = ft x 0.433 x S.G.
or
, Millwright - 2nd Year: Dynamic Pumps
Exam Questions and Answers 100%
score Latest update 2026
psi = (ft x S.G.) / 2.31
How do you calculate the weight of a substance using its specific
density? -
correct answer ✅Weight of water (62.4 lb/ft^3) x specific density
What 3 ways can atmospheric be expressed? -
correct answer ✅a) 14.7 psia (101.325 kPa absolute)
b) 34 ft (10.37 m) of water
c) 37 ft (11.28m) of oil
A pump produces 1000 feet of head. What is the pressure produced
when pumping water? What is the pressure when pumping
gasoline (S.G. = 0.74)? -
correct answer ✅Water:
psi = ft x 0.433 x S.G.
psi = 1000 x 0.433 x 1
psi = 433 psi
Gasoline:
psi = ft x 0.433 x S.G.
Exam Questions and Answers 100%
score Latest update 2026
How does a dynamic pump differ from positive displaement pump?
-
correct answer ✅They have no seal between the suction and
discharge sides, and they prodice a continuous, non-pulsating flow
of liquid
What are the typical units of density? -
correct answer ✅Typical units of measurement include
pounds/cubic foor (imperial) and kilograms/cubic metre (metric)
What is density? -
correct answer ✅The mass or weight of a substance per unit
volume.
What is specific gravity? -
correct answer ✅The ratio of the density of a substance to that of
water
What is pressure? -
correct answer ✅A measure of intensity of effort described as
force per unit area
,Millwright - 2nd Year: Dynamic Pumps
Exam Questions and Answers 100%
score Latest update 2026
What are the typical units for pressure -
correct answer ✅Pounds per square inch (imperial) and Newtons
per square metre (metric)
The formula used to determin pressure is: -
correct answer ✅Pressure = force / area
What is gauge pressure? -
correct answer ✅A pressure reading using atmospheric pressure
as a reference point (psig or kPa gauge)
What is absolute pressure? -
correct answer ✅A pressure reading using absolute zero as as
reference point (psia or kPa absolute)
What is atmospheric pressure? -
correct answer ✅The portion of the weight of the earth's
atmosphere that bears down on an area of one square inch.
,Millwright - 2nd Year: Dynamic Pumps
Exam Questions and Answers 100%
score Latest update 2026
What is the averaged atmospheric pressure at sea level? -
correct answer ✅14.7 psia (101.325 kPa absolute)
AS you rise in altitude, atmospheric pressure
___________________. -
correct answer ✅decreases
What is vacuum pressure? -
correct answer ✅Pressure below atmospheric pressure
What units is vacuum pressure usually expressed as? -
correct answer ✅inches or mm of mercury
What is head pressure? -
correct answer ✅The height in feet of a column of water that is
one square foot at the base
How is head pressure converted to psi? -
correct answer ✅psi = ft x 0.433 x S.G.
or
, Millwright - 2nd Year: Dynamic Pumps
Exam Questions and Answers 100%
score Latest update 2026
psi = (ft x S.G.) / 2.31
How do you calculate the weight of a substance using its specific
density? -
correct answer ✅Weight of water (62.4 lb/ft^3) x specific density
What 3 ways can atmospheric be expressed? -
correct answer ✅a) 14.7 psia (101.325 kPa absolute)
b) 34 ft (10.37 m) of water
c) 37 ft (11.28m) of oil
A pump produces 1000 feet of head. What is the pressure produced
when pumping water? What is the pressure when pumping
gasoline (S.G. = 0.74)? -
correct answer ✅Water:
psi = ft x 0.433 x S.G.
psi = 1000 x 0.433 x 1
psi = 433 psi
Gasoline:
psi = ft x 0.433 x S.G.
