3a1 chapter 7 questions correctly and
correct answers graded A+
The ratio of the output force to the input force is called the:
a. Actual mechanical advantage
b. Efficiency
c. Velocity ratio
d. Velocity proportion
e. Mechanical ratio. - correct answer ✔✔a
Canadian Metric Practice Guide specified the unit for pressure to be used as:
a. psi
b. bar
c. Pa
d. mm Hg
e. mm of water. - correct answer ✔✔c
Velocity ratio is equal to the:
a. Ideal efficiency
b. Actual mechanical advantage
c. Actual efficiency
d. Actual mechanical ratio
e. Ideal mechanical advantage. - correct answer ✔✔e
The values of pressure that can have both a positive or a negative value is:
a. Atmopheric pressure
b. Partial vacuum
, c. Vapour pressure
d. Absolute pressure
e. Gage pressure. - correct answer ✔✔e
Load multiplied by distance load moves divided by effort multiplied by distance effort moves is the:
a. Mechanical advantage of a simple machine
b. Velocity ratio of a simple machine
c. Efficiency of a simple machine
d. Torquing effect of a simple machine
e. Ratio of the mechanical advantage of a simple machine. - correct answer ✔✔c
The _____ of a screw thread is the distance measured axially from the top thread.
a. Pitch
b. Size
c. Mass
d. Weight
e. Length. - correct answer ✔✔a
The _____ of a screw thread is the axial distance moved for one complete revolution.
a. Lead
b. Lag
c. Taper
d. Size
e. Length. - correct answer ✔✔a
In a fluid contained by solid boundaries the pressure exerted by the enclosed fluid on its boundaries is
always:
a. Normal or prependicular
b. Constant in all directions
correct answers graded A+
The ratio of the output force to the input force is called the:
a. Actual mechanical advantage
b. Efficiency
c. Velocity ratio
d. Velocity proportion
e. Mechanical ratio. - correct answer ✔✔a
Canadian Metric Practice Guide specified the unit for pressure to be used as:
a. psi
b. bar
c. Pa
d. mm Hg
e. mm of water. - correct answer ✔✔c
Velocity ratio is equal to the:
a. Ideal efficiency
b. Actual mechanical advantage
c. Actual efficiency
d. Actual mechanical ratio
e. Ideal mechanical advantage. - correct answer ✔✔e
The values of pressure that can have both a positive or a negative value is:
a. Atmopheric pressure
b. Partial vacuum
, c. Vapour pressure
d. Absolute pressure
e. Gage pressure. - correct answer ✔✔e
Load multiplied by distance load moves divided by effort multiplied by distance effort moves is the:
a. Mechanical advantage of a simple machine
b. Velocity ratio of a simple machine
c. Efficiency of a simple machine
d. Torquing effect of a simple machine
e. Ratio of the mechanical advantage of a simple machine. - correct answer ✔✔c
The _____ of a screw thread is the distance measured axially from the top thread.
a. Pitch
b. Size
c. Mass
d. Weight
e. Length. - correct answer ✔✔a
The _____ of a screw thread is the axial distance moved for one complete revolution.
a. Lead
b. Lag
c. Taper
d. Size
e. Length. - correct answer ✔✔a
In a fluid contained by solid boundaries the pressure exerted by the enclosed fluid on its boundaries is
always:
a. Normal or prependicular
b. Constant in all directions
