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Machine Dynamics
Machine Dynamics Multiple Choice
Quiz 1
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Q.1
The graph plotted between the controlling force of the governor and Radius of rotation is known as _______
a) Controlling force diagram
b) Radius of rotation diagram
c) Governor diagram
d) Sensitivity diagram
Q.2
Controlling force is provided by spring and weight in the porter governor.
a) True
b) False
Q.3
In the given figure, the x – axis represents radius of rotation and the y axis represents the controlling force. This graph is known as _________
a) Controlling force diagram of Porter governor
b) Controlling force diagram of Hartnell governor
c) Controlling force diagram of isochronous governor
d) Controlling force diagram of a general governor
Q.4
What should be the stability condition for the angle made by OA and the x axis? (the x – axis represents radius of rotation and the y axis represents the controlling force.)
a) Angle must increase
b) Angle must decrease
c) Angle must remain constant
d) Stability is independent of this angle
Q.5
How should the equilibrium speed vary with the increase of radius of rotation of the governor balls for stability?
a) Must increase
b) Must decrease
c) Must remain constant
d) Equilibrium speed independent of radius of rotation
Q.6
For a more sensitive governor, the change in angle between OA and the x axis with change in radius of rotation should be? (the x – axis represents radius of rotation and the y axis represents the controlling force.)
a) Small
b) Large
c) Remain same
d) Is independent of this angle
Q.7
In the given figure, the straight line OA represents _________ (the x – axis represents radius of rotation and the y axis represents the controlling force.)
a) Isochronous governor
b) Hartnell governor
c) Non – Isochronous governor
d) Stable governor
Q.8
In the given figure if the angle between OA and x-axis is madedegrees, the rotation speed will become(the x – axis represents radius of rotation and the y axis represents the controlling force.)
a) True
b) False
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