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Mechanical Engineering Exam  >  Mechanical Engineering Test  >  Strength of Materials (SOM)  >  Test: Torsion of Shafts - 3 - Mechanical Engineering MCQ

Torsion of Shafts - 3 - Free MCQ Practice Test with solutions, GATE ME


MCQ Practice Test & Solutions: Test: Torsion of Shafts - 3 (10 Questions)

You can prepare effectively for Mechanical Engineering Strength of Materials (SOM) with this dedicated MCQ Practice Test (available with solutions) on the important topic of "Test: Torsion of Shafts - 3". These 10 questions have been designed by the experts with the latest curriculum of Mechanical Engineering 2026, to help you master the concept.

Test Highlights:

  • - Format: Multiple Choice Questions (MCQ)
  • - Duration: 30 minutes
  • - Number of Questions: 10

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Test: Torsion of Shafts - 3 - Question 1
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Two shaft of same material and same length are connected in series and subjected to a torque T as shown in the figure given below?

If d2/d1 = 2, what is the value of τ1/τ2?
(where τ1 and τ2 are extreme shear stresses in either of the two segments)

Detailed Solution: Question 1

Test: Torsion of Shafts - 3 - Question 2
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A shaft PQRS is subjected to torques at P,Q, R, S as shown in the given figure. The maximum torque for the shaft section occurs between

Detailed Solution: Question 2

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Test: Torsion of Shafts - 3 - Question 3
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A spring of stiffness 1 kN/m is stretched initially by 100 mm from the underformed position. The work required to stretch it by another 100 mm is

Detailed Solution: Question 3

k = 103/103 = 1N/mm
si = 100 mm
Fi = 1 x 100 = 100 N


Additional work required, 

Test: Torsion of Shafts - 3 - Question 4
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A close-coifed helical spring of stiffness 4 N/mm is in series with another spring of stiffness 6 N/mm. What is the stiffness of composite spring?

Detailed Solution: Question 4

Let the stiffness of composite spring = k
∴  1/k = 1/k1 + 1/k2
∴ 

Test: Torsion of Shafts - 3 - Question 5
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Stiffness of a close-coiled helical spring of wire diameter d, modulus of rigidity G number of coils n, mean coil radius R, is

Test: Torsion of Shafts - 3 - Question 6
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Wahl’s factor takes into account

Test: Torsion of Shafts - 3 - Question 7
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A spring with 25, active Coils cannot be accommodated within a given space. Hence 5 coils of the spring are cut. What is the stiffness of the new spring.

Detailed Solution: Question 7

As we know, k ∝ 1/n
∴ k2/k1 = n1/n2 = 25/20 = 1.25
⇒ k2 = 1.25 k1

Test: Torsion of Shafts - 3 - Question 8
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A close-coiled helical spring has 100 mm mean diameter and is made of 20 turns of 10 mm diameter steel wire. The spring carries an axial load of 100 N. Modulus of rigidity is 84 GPa. The shearing stress developed in the spring in N/mm2 is

Detailed Solution: Question 8

Closed coiled helical spring subjected to axial load (W) means that every section is subjected to torsion of WR where R is the radius of spring. From torsion formula,

d= diameter of wire 

d = 10mm
W = 100 N

Shear stress due to load,

Test: Torsion of Shafts - 3 - Question 9
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A carriage spring of span 'l’ consists of n plates each of thickness ‘t' and width b. If the spring carries a load w and modulus of elasticity of the spring is E, then the central deflection of the spring is

Test: Torsion of Shafts - 3 - Question 10
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A solid shaft of diameter d is subjected to twisting moment T, such that the maximum shear stress developed is τ. Now a hole of 0.5 d diameter is drilled throdghout the length of the shaft along the axis. How much torque Tmust be reduced so that shear stress remain the same?

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About this Mechanical Engineering Practice Test

This test contains 10 MCQs on Torsion of Shafts - 3 with detailed solutions for each question. It is part of the Strength of Materials (SOM) course on EduRev, designed to align with the current Mechanical Engineering syllabus. Each solution explains not just the correct answer but also gives you an understanding of the topic — not just to attempt the question but also help you prepare for the exam with practice.

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