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# GATE Past Year Questions: Torsion of Shafts Notes | EduRev

## Mechanical Engineering : GATE Past Year Questions: Torsion of Shafts Notes | EduRev

The document GATE Past Year Questions: Torsion of Shafts Notes | EduRev is a part of the Mechanical Engineering Course Strength of Materials (SOM).
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Try yourself:A cyiindrical elastic body subjected to pure torsion about its axis develops

[1989]

Try yourself: A circular rod of diameter d and length 3d is subjected to a compressive force F acting at the top point as shown below. Calculate the stress at the bottom most support point A

[1993]

Try yourself: Maximum shear stress developed on the surface of a solid circular shaft under pure torsion is 240 MPa. If the shaft diameter is doubled then the maximum shear stress developed corresponding to the same torque will be

[2003]

Try yourself:A solid circular shaft of 60mm diameter transmits a torque of 1600 Nm. The value of maximum shear stress developed is

[2004]

Try yourself:For a circular shaft of diameter d subjected to torque T, the maximum value of the shear stress is

[2006]

Try yourself:A solid circular shaft of diameter d is subjected to a combined bending moment M and torque, T. The material property to be used for designing the shaft using the relation is

Try yourself:A shaft with a circular cross-section is subjected to pure twisting moment. The ratio of the maximum shear stress to the largest principal stress is

[2016]

Try yourself:A machine element XY, fixed at end X, is subjected to an axial load P, transverse load F, and a twisting moment T at its free end Y. The most critical point from the strength point of view is

[2016]

Try yourself:The compound shaft shown is built-in at the two ends. It is subjected to a twisting moment T at the middle. What is the ratio of the reaction torques T1, and T2 at the ends?

Try yourself:Two shafts A and B are made of the same material. The diameter of shaft B is twice that of shaft A. The ratio of power which can be transmitted by shaft A to that of shaft B is (If maximum shear stress remains the same)

[1994]

Try yourself:A torque of 1.0 Nm is transmitted through a stepped shaft as shown in figure. The torsional stiffnesses of individual sections of lengths M N, NO and OP are 20 Nm/rad, 30 Nm/rad and 60 Nm/rad respectively. The angular deflection between the ends M and P of the shaft is

[2004]

Try yourself:Two shafts AB and BC, of equal length and diameters d and 2d, are made of the same material. They are joined at B through a shaft coupling, while the ends A and C are built-in (cantilevered). A twisting moment T is applied to the coupling. If TA and Tc represent the twisting moments at the ends A and C, respectively, then

[2005]

Try yourself:A torque T is applied at the free end of a stepped rod of circular cross-sections as shown in the figure. The shear modulus of the material of the rod is G. The expression for d to produce an angular twist q at the free end is

[2011]

Try yourself:A hollow shaft (d0 = 2di where d0 and di are the outer and inner diameters respectively) needs to transmit 20 kW power at 3000 RPM. If the maximum permissible shear stress is 30 MPa, d0 is

[2015]

Try yourself: A stepped steel shaft shown below is subjected to 10 N-m torque. If the modulus of rigidity is 80 GPa, the strain energy in the shaft in N-mm is​

[2007]

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## Strength of Materials (SOM)

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