Exam2win > Engineering > Mechanical Engineering > Machine Design > part4

Machine Design QUESTIONS AND ANSWERS

Mechanical Engineering : Machine Design QUESTIONS AND ANSWERS :: part4 : 1 to 5

Following Mechanical Engineering Multiple choice objective type questions and answers will help you in BSNL JTO, GATE 2024 and IES 2024 examinations :

1.In order to permit the thermal expansion/contraction of tubing, it should be

crimped

honed

flared

bent

none of the above.

2.Taper usually provided on cotter is

1 in 5

1 in 10

1 in 24

1 in 40

1 in 50.

3.Castle nut is a locking device in which

one smaller nut is tightened over main nut and main nut tightened against smaller one by loosening, creating friction jamming

a slot is cut partly is middle of nut and then slot reduced by tightening a screw

a hard fiber or nylon cotter is recessed in the nut and becomes threaded as the nut is screwed on the bolt causing a tight grip

through slots are made at top and a cotter pin is passed through these and a hole in the bolt, and cotter pin spitted and bent in reverse direction at other end

none of the above.

4.Taper on the cotter and slot is provided

on both the sides

on one side only

on none of the sides

may be provided anywhere

none of the above.

5.A tube has the following advantage over pipe

lighter and easier to handle

greater shock absorption

smoother inside walls

all of the above