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Mechanical Engineering Exam  >  Mechanical Engineering Tests  >  Design of Machine Elements  >  Test: Power Screws & Self Locking Screws - Mechanical Engineering MCQ

Test: Power Screws & Self Locking Screws - Mechanical Engineering MCQ


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10 Questions MCQ Test Design of Machine Elements - Test: Power Screws & Self Locking Screws

Test: Power Screws & Self Locking Screws for Mechanical Engineering 2024 is part of Design of Machine Elements preparation. The Test: Power Screws & Self Locking Screws questions and answers have been prepared according to the Mechanical Engineering exam syllabus.The Test: Power Screws & Self Locking Screws MCQs are made for Mechanical Engineering 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Power Screws & Self Locking Screws below.
Solutions of Test: Power Screws & Self Locking Screws questions in English are available as part of our Design of Machine Elements for Mechanical Engineering & Test: Power Screws & Self Locking Screws 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: Power Screws & Self Locking Screws | 10 questions in 20 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: Power Screws & Self Locking Screws - Question 1
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A power screw is only used to convert rotary motion into linear motion and not for transmitting power.

Detailed Solution for Test: Power Screws & Self Locking Screws - Question 1

Explanation: Power screw converts the motion from rotary to linear and is used for power transmission.

Test: Power Screws & Self Locking Screws - Question 2
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Depending upon the holding arrangement, power screws operate in how many different arrangements.

Detailed Solution for Test: Power Screws & Self Locking Screws - Question 2

Explanation: There are two types of arrangements. In one screw rotates while nut remains stationary and vice versa.

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Test: Power Screws & Self Locking Screws - Question 3
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V threads are highly recommended for fastening as well as power transmission purpose.

Detailed Solution for Test: Power Screws & Self Locking Screws - Question 3

Explanation: In fastening, high frictional force is required and hence V threads are used whereas in power transmission, reduction in frictional forces is required.

Test: Power Screws & Self Locking Screws - Question 4
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A power screw has no problem of wear as there is very less amount of friction associated.
Detailed Solution for Test: Power Screws & Self Locking Screws - Question 4

Explanation: Wear is a serious problem in power screws as there is high friction in threads.

Test: Power Screws & Self Locking Screws - Question 5
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Trapezoidal threads are better than square threads as there is radial pressure or side thrust on the nut. 
Detailed Solution for Test: Power Screws & Self Locking Screws - Question 5

Explanation: Trapezoidal and not square threads suffer from the problem of bursting.

Test: Power Screws & Self Locking Screws - Question 6
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 Trapezoidal threads screws have less load carrying capacity as compared to square thread screws.
Detailed Solution for Test: Power Screws & Self Locking Screws - Question 6

Explanation: Square threads have less thickness at the core diameter and hence lower load carrying capacity.

Test: Power Screws & Self Locking Screws - Question 7
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Which of the following are true for buttress threads?
Detailed Solution for Test: Power Screws & Self Locking Screws - Question 7

Explanation: As force is applied only in one direction in a vice so buttress threads are used.

Test: Power Screws & Self Locking Screws - Question 8
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Tr 40 x 14(P 7), here 14 indicates
Detailed Solution for Test: Power Screws & Self Locking Screws - Question 8

Explanation: Tr=Trapezoidal threads,14=Lead(mm),7=Pitch(mm).

Test: Power Screws & Self Locking Screws - Question 9
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If nominal diameter of screw thread=50mm and pitch=10mm then the mean diameter of the screw thread will be?
Detailed Solution for Test: Power Screws & Self Locking Screws - Question 9

Explanation: Diameter(mean)=Diameter(nominal) – 0.5P .

Test: Power Screws & Self Locking Screws - Question 10
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If the load itself begin to the screw and descend down, unless a restraining torque is applied then the condition is termed as
Detailed Solution for Test: Power Screws & Self Locking Screws - Question 10

Explanation: Overhaulting is the condition when load itsel begin to turn the screw.

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Power Screws & Self Locking Screws MCQs with Answers

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