Mechanical Engineering MCQs

Page No. 92

Taper usually provided on cotter is_________________?


a1 in 5


b1 in 10


c1 in 24


d1 in 40


View Answer 1 in 24

If d is the normal diameter of a bolt in mm, then the initial tension in kg in a bolt used for making a fluid tight joint as for steam engine cover joint is calculated by the relation_______________?


a102 d


b124 d


c138 d


d168 d


View Answer 168 d

Eye bolts are used for_________________?


afoundation purposes


blocking devices *


cabsorbing shock and vibrations


dlifting and transportation of machines and cubicles



Fibrous fracture occurs in_____________?


aductile material


bbrittle material


celastic material


dhard material


View Answer ductile material

A key made from a cylindrical disc having segmental cross-section, is known as______________?


awood-ruff key


bfeather key


cflat saddle key


dgib head key


View Answer wood-ruff key

In order to obtain bolt of uniform strength____________________?


aincrease shank diameter


bincrease its length


cdrill an axial hole through head up to threaded portion so that shank area is equal to root area of thread


dtighten die bolt properly



The pitch of threads on a Jock nut in comparison to pitch of nut is_________________?


asame


bcoarser


cfiner


dvery coarse


View Answer same

Transverse fillet welded joints are designed for________________?


atensile strength


bcompressive strength


cshear strength


dbending strength


View Answer tensile strength

In order to avoid tearing of the plate at edge, the distance from the center line of the rivet hole to the nearest edge of the plate in terms of dia of rivet d should be equal to__________________?


ad


b1.25 d


c1.5 d


d1.75 d


View Answer 1.5 d

The edges of a boiler plate are bevelled to an angle of______________?


a30°


b45°


c60°


d80°


View Answer 80°

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