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GATE ME 2016 Set 1

MCQ (Single Correct Answer)

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-0.3

The cross sections of two hollow bars made of the same material are concentric circles as shown in the figure. It is given that 𝑟

_{3}> 𝑟_{1}and 𝑟_{4}> 𝑟_{2}, and that the areas of the cross-sections are the same. J_{1}and J_{2}are the torsional rigidities of the bars on the left and right, respectively. The ratioJ_{2}/J_{1}is2

GATE ME 2015 Set 2

Numerical

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A rope brake dynamometer attached to the crank shaft of an $$I.C.$$ engine measures a brake power of $$10$$ kW when the speed of rotation of the shaft is $$400$$ rad/s. The shaft torque (in N-m) sensed by the dynamometer is ________

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3

GATE ME 2015 Set 1

Numerical

+1

-0

Consider a stepped shaft subjected to a twisting moment applied at $$B$$ as shown in the figure. Assume shear modulus, $$G=77$$ GPa. The angle of twist at $$C$$ (in degrees) is ________

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4

GATE ME 2014 Set 3

Numerical

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-0

Two solid circular shafts of $${{R_1}}$$ and $${{R_2}}$$ are subjected to same torque. The maximum shear stresses developed in the two shafts are $${\tau _1}$$ and $${\tau _2}.$$ If $${{{R_1}} \over {{R_2}}} = 2,$$ then $${{{\tau _1}} \over {{\tau _2}}}$$ is _______.

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Questions Asked from Torsion (Marks 1)

Number in Brackets after Paper Indicates No. of Questions

GATE ME Subjects

Engineering Mechanics

Machine Design

Strength of Materials

Heat Transfer

Production Engineering

Industrial Engineering

Turbo Machinery

Theory of Machines

Engineering Mathematics

Fluid Mechanics

Thermodynamics

General Aptitude