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Test: Torsion Level - 1 - Mechanical Engineering MCQ


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10 Questions MCQ Test Strength of Materials (SOM) - Test: Torsion Level - 1

Test: Torsion Level - 1 for Mechanical Engineering 2024 is part of Strength of Materials (SOM) preparation. The Test: Torsion Level - 1 questions and answers have been prepared according to the Mechanical Engineering exam syllabus.The Test: Torsion Level - 1 MCQs are made for Mechanical Engineering 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Torsion Level - 1 below.
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Test: Torsion Level - 1 - Question 1

Polar moment of inertia of a hollow circular section with external diameter D and internal diameter d is equal to

Test: Torsion Level - 1 - Question 2

Polar section modulus is the ratio of

Detailed Solution for Test: Torsion Level - 1 - Question 2
Polar section modulus, =Polar moment of inertia of the shaft / Maximum radius

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Test: Torsion Level - 1 - Question 3

Torsional stiffness is defined as

Detailed Solution for Test: Torsion Level - 1 - Question 3

Torsional rigidity of a shaft is defined as the torque required to produce a twist of one radian per unit length of the shaft.

Test: Torsion Level - 1 - Question 4

A shaft of circular section is said to be in pure torsion when it is subjected to equal and opposite end couples whose axes coincides with the

Detailed Solution for Test: Torsion Level - 1 - Question 4
Torsion is about the polar centroidal axis i.e., along the axis of shaft

Test: Torsion Level - 1 - Question 5

In a solid circular shaft subjected to pure torsion, the maximum shear stress occurs at

Test: Torsion Level - 1 - Question 6

Shear stress for a circular shaft due to torque varies

Detailed Solution for Test: Torsion Level - 1 - Question 6

Test: Torsion Level - 1 - Question 7

The torque that produces a twist of one radian in a shaft per unit length is called

Detailed Solution for Test: Torsion Level - 1 - Question 7
Torsional rigidity = CJ Units: kg cm2(or) N­mm2

Test: Torsion Level - 1 - Question 8

The torsional rigidity of a tube of thickness 1.0 mm, diameter 200 mm and rigidity modulus 100.0 GPa is

Detailed Solution for Test: Torsion Level - 1 - Question 8
Torsional rigidity,

GJ = 100 × 103 ×

= 637.8 × 109N­m2

= 637.8GN­m2

Test: Torsion Level - 1 - Question 9

A hollow shaft of same cross-section area and same mass as a solid shaft, transmits

Detailed Solution for Test: Torsion Level - 1 - Question 9
If area of solid and hollow section are equal

Where

k = d / D

Eg: k=0.60

Th = 1.7 Ts Hollow shaft have 70% more torque.

Test: Torsion Level - 1 - Question 10

If the moment of inertia of a section about its orthogonal axes are 1 × 106 and 2 × 106 and its area is 1000 units. Its polar moment of inertia is

Detailed Solution for Test: Torsion Level - 1 - Question 10
Polar moment of inertia

Izz = Ixx + Iyy

= 1 × 106 + 2 × 106

Izz = 3 × 106

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