The velocity ratio of a single purchase crab winch can be increased by increasin

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Question
The velocity ratio of a single purchase crab winch can be increased by
Options
A. increasing the length of the handle
B. increasing the radius of the load drum
C. increasing the number of teeth of the pinion
D. all of the above

Correct Answer

increasing the length of the handle

Engineering Mechanics problems

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1. For any system of coplaner forces, the condition of equilibrium is that the
Options
A. algebraic sum of the horizontal components of all the forces should be zero
B. algebraic sum of the vertical components of all the forces should be zero
C. algebraic sum of moments of all the forces about any point should be zero
D. all of the above

5. In a framed structure, as shown in the below figure, the forces in the members AB and BC are respectively
Options
A. (tensile) and 2W (compressive)
B. 2W(tensile) and (compressive)
C. (tensile) and (compressive)
D. none of the above

10. A spherical body is symmetrical about its perpendicular axis. According to Routh's rule, the moment of inertia of a body about an axis passing through its centre of gravity is(where, M = Mass of the body, and S = Sum of the squares of the two semi-axes.)
Options
A. MS/3
B. MS/4
C. MS/5
D. none of these

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