Millwright – Hydraulics Questions and
Answers 100% Correct.
What is pressure defined as? - ANSWER-Force per unit area F=(P)(A)
What is the pressure of the Earth's atmosphere at sea level? - ANSWER-14.7 psi
How is power defined?
A. The rate or velocity at which power is done
B. The rate or velocity at which work is created
C. The speed of the velocity in a power system
D. The rate or speed at which work is done. - ANSWER-D. The rate or speed at which
work is done.
What is a watt?
A. watt is one newton lifted 1 m in one second.
B. Power unit defined by its work
C. Watt is 1 N lifted 1 cm in one second
D. One jule per second squared - ANSWER-A. watt is one newton lifted 1 m in one
second.
What is one horsepower equal to? - ANSWER-1 horsepower is equal to 746 Watts or
33000 pounds lifted one foot in one minute.
What is the law of conservation of energy?
A. Energy cannot be destroyed, but it may be created from one form to another.
B. Energy cannot be destroyed, but it may be converted from one form to another.
C. Energy can be destroyed, but cant be converted from one form to another
D. Energy cannot be destroyed, but it may be transformed to another form of power -
ANSWER-B. Energy cannot be destroyed, but it may be converted from one form to
another.
How much does hydraulic fluid compress?
A. Hydraulic fluid compresses about 0.5% at 10000 psi.
B. Hydraulic fluid compresses about 0.5% at 1000 psi.
C. Hydraulic fluid compresses about 0.5% at 1000 kPa.
D. Hydraulic fluid compresses about 0.15% at 1000 psi. - ANSWER-B. Hydraulic fluid
compresses about 0.5% at 1000 psi.
What is Pascal's Law?
A. When pressure is applied to a confined liquid at rest, force is transmitted equally in
every direction and always at right angles to the containing surface.
, B. When pressure is applied to a confined liquid at rest force is transmitted equally in all
directions
C. The law of pressure
D. The law of fluid pressur - ANSWER-A. When pressure is applied to a confined liquid
at rest, force is transmitted equally in every direction and always at right angles to the
containing surface.
How many cubic inches in one US gallon?
A. 231
B. 567
C. 245
D. 223 - ANSWER-A. 231
How many cubic inches in 1 imperial gallon? - ANSWER-277 cubic inches
What is the definition of fluid velocity?
A. Pressure velocity refers to the average speed in a particular direction of the hydraulic
fluid passing a given point. This is the distance traveled by the fluid in a unit of time.
B. Fluid velocity refers to the average speed in a particular direction of the hydraulic
fluid passing a given point. This is the distance traveled by the fluid in a unit of time.
C. Fluid velocity refers to the average speed in a one direction of the hydraulic fluid
passing a given point. This is the distance traveled by the fluid.
D. Fluid velocity refers to the average speed in a particular direction of the hydraulic
fluid passing a given point. This is the distance traveled by the fluid in a unit of time. -
ANSWER-A. Pressure velocity refers to the average speed in a particular direction of
the hydraulic fluid passing a given point. This is the distance traveled by the fluid in a
unit of time.
What is the formula for velocity? - ANSWER-V=distance/time
V=(flow rate) (1666.7)/area *(METRIC L per min)* OR
V=(flow rate)/(3.117)(area) *(IMPERIAL Gal per min)*
Describe laminar flow. - ANSWER-In ideal flow situations the fluid moves in layers,
parallel to the walls of the conductor. The fluid at the outer walls of the conductor moves
more slowly than the fluid in the center of the conductor.
Describe turbulent flow. - ANSWER-When smooth flow is disrupted, the fluid particles
move in a random pattern rather than parallel to the direction of flow.
What is friction? - ANSWER-A. Friction is the resistance to relative motion between two
bodies.
B. Friction is the passing of objects and their opposing force
C. Acting force on a body
D. Opposite of smooth
Answers 100% Correct.
What is pressure defined as? - ANSWER-Force per unit area F=(P)(A)
What is the pressure of the Earth's atmosphere at sea level? - ANSWER-14.7 psi
How is power defined?
A. The rate or velocity at which power is done
B. The rate or velocity at which work is created
C. The speed of the velocity in a power system
D. The rate or speed at which work is done. - ANSWER-D. The rate or speed at which
work is done.
What is a watt?
A. watt is one newton lifted 1 m in one second.
B. Power unit defined by its work
C. Watt is 1 N lifted 1 cm in one second
D. One jule per second squared - ANSWER-A. watt is one newton lifted 1 m in one
second.
What is one horsepower equal to? - ANSWER-1 horsepower is equal to 746 Watts or
33000 pounds lifted one foot in one minute.
What is the law of conservation of energy?
A. Energy cannot be destroyed, but it may be created from one form to another.
B. Energy cannot be destroyed, but it may be converted from one form to another.
C. Energy can be destroyed, but cant be converted from one form to another
D. Energy cannot be destroyed, but it may be transformed to another form of power -
ANSWER-B. Energy cannot be destroyed, but it may be converted from one form to
another.
How much does hydraulic fluid compress?
A. Hydraulic fluid compresses about 0.5% at 10000 psi.
B. Hydraulic fluid compresses about 0.5% at 1000 psi.
C. Hydraulic fluid compresses about 0.5% at 1000 kPa.
D. Hydraulic fluid compresses about 0.15% at 1000 psi. - ANSWER-B. Hydraulic fluid
compresses about 0.5% at 1000 psi.
What is Pascal's Law?
A. When pressure is applied to a confined liquid at rest, force is transmitted equally in
every direction and always at right angles to the containing surface.
, B. When pressure is applied to a confined liquid at rest force is transmitted equally in all
directions
C. The law of pressure
D. The law of fluid pressur - ANSWER-A. When pressure is applied to a confined liquid
at rest, force is transmitted equally in every direction and always at right angles to the
containing surface.
How many cubic inches in one US gallon?
A. 231
B. 567
C. 245
D. 223 - ANSWER-A. 231
How many cubic inches in 1 imperial gallon? - ANSWER-277 cubic inches
What is the definition of fluid velocity?
A. Pressure velocity refers to the average speed in a particular direction of the hydraulic
fluid passing a given point. This is the distance traveled by the fluid in a unit of time.
B. Fluid velocity refers to the average speed in a particular direction of the hydraulic
fluid passing a given point. This is the distance traveled by the fluid in a unit of time.
C. Fluid velocity refers to the average speed in a one direction of the hydraulic fluid
passing a given point. This is the distance traveled by the fluid.
D. Fluid velocity refers to the average speed in a particular direction of the hydraulic
fluid passing a given point. This is the distance traveled by the fluid in a unit of time. -
ANSWER-A. Pressure velocity refers to the average speed in a particular direction of
the hydraulic fluid passing a given point. This is the distance traveled by the fluid in a
unit of time.
What is the formula for velocity? - ANSWER-V=distance/time
V=(flow rate) (1666.7)/area *(METRIC L per min)* OR
V=(flow rate)/(3.117)(area) *(IMPERIAL Gal per min)*
Describe laminar flow. - ANSWER-In ideal flow situations the fluid moves in layers,
parallel to the walls of the conductor. The fluid at the outer walls of the conductor moves
more slowly than the fluid in the center of the conductor.
Describe turbulent flow. - ANSWER-When smooth flow is disrupted, the fluid particles
move in a random pattern rather than parallel to the direction of flow.
What is friction? - ANSWER-A. Friction is the resistance to relative motion between two
bodies.
B. Friction is the passing of objects and their opposing force
C. Acting force on a body
D. Opposite of smooth
