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Test: Design Against Static Load - 2 - Mechanical Engineering MCQ


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Test: Design Against Static Load - 2 - Question 1

A steel bar 2.5 m long and 20 mm square is elongated by a load of 500 kN. If poisson’s ratio is 0.25, what is the increase in volume? Take E = 0.2 x 106 N/mm2.

Detailed Solution for Test: Design Against Static Load - 2 - Question 1

Area = 20*20

= 400

Length = 2500 mm

\/ = Area x Length 
= 400 x 2500 = 100 x 104 mm3

Test: Design Against Static Load - 2 - Question 2

The thickness of cotter is generally taken equal to
Where d is the diameter of two rods which are connected by the cotter joint?

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Test: Design Against Static Load - 2 - Question 3

For a cotter, the ratio of thickness to width is

Test: Design Against Static Load - 2 - Question 4

Calculations for the diameter of the rod in cotter joint are made by considering failure of the rod in

Detailed Solution for Test: Design Against Static Load - 2 - Question 4

Rod in cotter joint is designed against tensile failure, i.e.

⇒ 

Test: Design Against Static Load - 2 - Question 5

The draw in a cotter should not be more than

Test: Design Against Static Load - 2 - Question 6

Which of the following statement(s) is/are valid pertaining to a cotter joint?
1. cotter is a flat wedge like piece inserted through the members at right angles to their axes.
2. used for rigid fastening of two rods.
3. rods to be connected are subjected to tensile or compressive stresses along their axes.
4. not suitable for joining members under rotation.

Test: Design Against Static Load - 2 - Question 7

The cotter is uniform in thickness but tapered in width on one side. The normal value of this taper is

Test: Design Against Static Load - 2 - Question 8

A localized compressive stress at the area of contact between two members is known as

Test: Design Against Static Load - 2 - Question 9

Which one of the following graph represents von- mises yield criterion

Test: Design Against Static Load - 2 - Question 10

The piston rod and the cross head in a steam engine are usually connected by means of

Detailed Solution for Test: Design Against Static Load - 2 - Question 10

Cotter joint is used to connect two co-axial rods which are subjected to either tensile or compressive.force. It have application to join piston rod and cross head of steam engine.

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