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Mechanical Engineering Exam  >  Mechanical Engineering Tests  >  Design of Machine Elements  >  Test: Threaded Joints & Power Screws - 2 - Mechanical Engineering MCQ

Test: Threaded Joints & Power Screws - 2 - Mechanical Engineering MCQ


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10 Questions MCQ Test Design of Machine Elements - Test: Threaded Joints & Power Screws - 2

Test: Threaded Joints & Power Screws - 2 for Mechanical Engineering 2024 is part of Design of Machine Elements preparation. The Test: Threaded Joints & Power Screws - 2 questions and answers have been prepared according to the Mechanical Engineering exam syllabus.The Test: Threaded Joints & Power Screws - 2 MCQs are made for Mechanical Engineering 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Threaded Joints & Power Screws - 2 below.
Solutions of Test: Threaded Joints & Power Screws - 2 questions in English are available as part of our Design of Machine Elements for Mechanical Engineering & Test: Threaded Joints & Power Screws - 2 solutions in Hindi for Design of Machine Elements course. Download more important topics, notes, lectures and mock test series for Mechanical Engineering Exam by signing up for free. Attempt Test: Threaded Joints & Power Screws - 2 | 10 questions in 30 minutes | Mock test for Mechanical Engineering preparation | Free important questions MCQ to study Design of Machine Elements for Mechanical Engineering Exam | Download free PDF with solutions
Test: Threaded Joints & Power Screws - 2 - Question 1
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The resultant axial load on a bolt depends upon
1. external load applied
2. initial tension due to tightening of bolt
3. relative elastic yielding of the bolt and connected member
Which of the above statements are correct?

Detailed Solution for Test: Threaded Joints & Power Screws - 2 - Question 1


where, P = resultant load
P1 = initial tension due to tightening of bolt
P2 = external load
m, b = relative elatsic yielding (m/N)

Test: Threaded Joints & Power Screws - 2 - Question 2
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A bolt is to be used for making a fluid tight joint steam engine cover plates. Which of the following relation is used for initial tension (in N) in the bolt?
where d is the nominal bolt diameter in mm.

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Test: Threaded Joints & Power Screws - 2 - Question 3
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The most important dimension in the design of nut is its

Detailed Solution for Test: Threaded Joints & Power Screws - 2 - Question 3

For standard coarse threads, the threads are equally strong in failure by shear and failure by tension, if the height of the nut is approximately 0.4 times of the nominal diameter of the bolt. The height of the standard hexagonal nut is 0.8 d. The threads of the bolt in the standard nut will not fail by shear. So, height of nut is. most important design dimension.

Test: Threaded Joints & Power Screws - 2 - Question 4
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Select the incorrect statement:
Detailed Solution for Test: Threaded Joints & Power Screws - 2 - Question 4

The Acme threads are usually formed on the spindles of bench vices.

Test: Threaded Joints & Power Screws - 2 - Question 5
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 Identify the wrong statement:
Detailed Solution for Test: Threaded Joints & Power Screws - 2 - Question 5

A coupler or turnbuckle is used for connecting two members which are subjected to tensile loading and which require slight adjustment in length.

Test: Threaded Joints & Power Screws - 2 - Question 6
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Which of the following locking devices has the widest application in automobile industry?
Detailed Solution for Test: Threaded Joints & Power Screws - 2 - Question 6

Castle nut is extensively on jobs subjected to sudden shocks and considerable vibration such as in automobile industry.

Test: Threaded Joints & Power Screws - 2 - Question 7
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Two shafts are connected by means of a flange coupling to transmit torque of 25 N-m. The flanges of the coupling are fastened by four bolts of the same material at a radius of 30 mm. What is the size of bolts if the allowable shear stress for the botl material is 30 MPa?
Detailed Solution for Test: Threaded Joints & Power Screws - 2 - Question 7




∴ 

Test: Threaded Joints & Power Screws - 2 - Question 8
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The designation M 33 x 2 of a bolt means
Test: Threaded Joints & Power Screws - 2 - Question 9
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For bolts of uniform strength, the shank diameter is made equal to
Detailed Solution for Test: Threaded Joints & Power Screws - 2 - Question 9

Bolt of uniform strength are made by
1. Reducing the diameter of shank of bolt corresponding to that of minor diameter.
2. Making a hole and making the area of shank equal to root area.

Test: Threaded Joints & Power Screws - 2 - Question 10
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How can shock absorbing capacity of a bolt be increased
Detailed Solution for Test: Threaded Joints & Power Screws - 2 - Question 10

By reducing the shank diameter to the core diameter, the shank of the bolt will undergo a higher stress. This means that the shank will absorb a large portion of energy.

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