If the controlling force line for a spring controlled governor when produced intersects the Y-axis at the origin, then the governor is said to be

A stable
B unstable
C isochronous
D none of the mentioned

Correct Answer: isochronous

If the controlling force line for a spring controlled governor when produced intersects the Y-axis at the origin, then the governor is said to be isochronous. A spring controlled governor is said to be stable if the controlling force line when produced intersects the Y-axis below the origin. If the controlling force line for a spring controlled governor when produced intersects the Y-axis at the origin, then the governor is said to be unstable.
Bissoy MCQ
#Machine Dynamics #Hartung Governor

Related Questions

A spring controlled governor is said to be stable if the controlling force line when produced intersects the Y-axis
A at the origin
B below the origin
C above the origin
D any of the mentioned
A closely coiled helical spring is acted upon by an axial force. The maximum shear stress developed in the spring is $$\tau $$. The half of the length of the spring if cut off and the remaining spring is acted upon by the same axial force. The maximum shear stress in the spring in new condition will be
A $$\frac{\tau }{2}$$
B $$\tau $$
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D $$4\tau $$
In a spring controlled governor, when the controlling force ________ as the radius of rotation increases, it is said to be a stable governor.
A Remains constant
B Decreases
C Increases
D None of these
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A increases as the radius of rotation decreases
B increases as the radius of rotation increases
C decreases as the radius of rotation decreases
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A spring controlled governor is said to be isochronous when the controlling force
A increases as the radius of rotation decreases
B increases as the radius of rotation increases
C decreases as the radius of rotation decreases
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When a closely-coiled helical spring of mean diameter (D) is subjected to an axial load (W), the deflection of the spring ($$\delta $$) is given by (where d = Diameter of spring wire, n = No. of turns of the spring and C = Modulus of rigidity for the spring material)
A $$\frac{{{\text{W}}{{\text{D}}^3}{\text{n}}}}{{{\text{C}}{{\text{d}}^4}}}$$
B $$\frac{{2{\text{W}}{{\text{D}}^3}{\text{n}}}}{{{\text{C}}{{\text{d}}^4}}}$$
C $$\frac{{4{\text{W}}{{\text{D}}^3}{\text{n}}}}{{{\text{C}}{{\text{d}}^4}}}$$
D $$\frac{{8{\text{W}}{{\text{D}}^3}{\text{n}}}}{{{\text{C}}{{\text{d}}^4}}}$$
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D 2
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A $$\frac{{{\text{WD}}}}{{\pi {{\text{d}}^3}}} \times {\text{K}}$$
B $$\frac{{2{\text{WD}}}}{{\pi {{\text{d}}^3}}} \times {\text{K}}$$
C $$\frac{{4{\text{WD}}}}{{\pi {{\text{d}}^3}}} \times {\text{K}}$$
D $$\frac{{8{\text{WD}}}}{{\pi {{\text{d}}^3}}} \times {\text{K}}$$
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A One-sixteenth
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