Which one of the following statements relating to belt drives is correct?

Q.

Which one of the following statements relating to belt drives is correct?

A. The rotational speeds of the pulleys are directly proportional to their diameters

B. The length of the crossed belt increases as the sum of the diameters of the pulleys increases

C. The crowning of the pulleys is done to make the drive sturdy

D. The slip increases the velocity ratio

Answer & Explanation

Answer : Option: A

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Q.

The controlling force curve of an spring loaded governor is given by F = ar−c where r is the radius of rotation of the governor balls, and a and c are constants. The governor is

A. Stable

B. Unstable

C. Isochronous

D. Insensitive

Answer & Explanation

Q.

A Hartnell governor is a governor of

A. Inertia type

B. Pendulum type

C. Centrifugal type

D. Dead weight type

Answer & Explanation

Q.

A governor is said to be isochronous when the equilibrium speed for all radii or rotation the balls within the working range

A. Is not constant

B. Is constant

C. Varies uniformly

D. Has uniform acceleration

Answer & Explanation

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

A. P = 0 and q is positive

B. P is positive and q = 0

C. P is negative and q is positive

D. P is positive and q is also positive

Answer & Explanation

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Which one of the following statements relating to belt drives is correct?

Q. Which one of the following statements relating to belt drives is correct?

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Q. The controlling force curve of an spring loaded governor is given by F = ar−c where r is the radius of rotation of the governor balls, and a and c are constants. The governor is

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Q.

Which one of the following statements relating to belt drives is correct?

Q.

The controlling force curve of an spring loaded governor is given by F = ar−c where r is the radius of rotation of the governor balls, and a and c are constants. The governor is

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Q.

A governor is said to be isochronous when the equilibrium speed for all radii or rotation the balls within the working range

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