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A Hartnell governor has its controlling force F given by F = p+qr...

Q.  
A Hartnell governor has its controlling force F given by F = p+qr where r is the radius of balls and p and q are constants. The governor becomes isochronous when


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Answer :   Option: A


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More Questions Theory of Machines:

Q.  
A spring loaded governor is found unstable. It can be made stable by

A. Increasing the spring stiffness

B. Decreasing the spring stiffness

C. Increasing the ball weight

D. Decreasing the ball weight


Answer & Explanation

Q.  
For a spring controlled governor to be stable, the controlling force (F) is related to the radius (r) by the equation

A. F = ar−b

B. F = ar+b

C. F = ar

D. F = a/r−b


Answer & Explanation

Q.  
The sensitivity of an isochronous governor is

A. Zero

B. One

C. Two

D. Infinity


Answer & Explanation

Q.  
If φ is the friction angle, the efficiency of power screw is maximum when the lead angle is

A. π/2−φ/2

B. π/2−φ

C. π−φ/2

D. π−φ


Answer & Explanation
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