MCQ on Rivet Design Machine Design
1. A rivet consists of a cylindrical part called _______
a) head
b) shank
c) cylinder
d) snap
Answer: b
Explanation: Cylindrical part of the rivet is Shank. Snap head is a type of rivet. Rivet has circular head at another end.
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2. Rivets are usually made of ________
a) cast iron
b) wrought iron
c) aluminum
d) steel
Answer: b
Explanation: Wrought iron is generally used to make rivets. Aluminum rivets are also used for light weight and domestic application. Steel and cast iron are not used for making rivets.
3. Which of the following is not a type of rivet head?
a) Flat head
b) Mushroom head
c) High head
d) Low head
Answer: d
Explanation: Flat head, Mushroom head, High head are the types of rivet head. Low head is not a type of rivet head. Some other types of rivet head are snap head, ellipsoidal head, Round counter sunk head, Pan head, Flat counter sunk head.
4. Shank diameter of the rivet depends upon the ________
a) thickness of the plates to be joined
b) height of the shank
c) material of shank
d) standards of manufacturing
Answer: a
Explanation: The shank diameter depends upon the thickness of the plates to be joined. The plates are generally of equal sizes. The two parameters, i.e. diameter and thickness are related by Unwin’s formula.
5. d=6√t is the equation for diameter (d) and thickness (t) when _________
a) d and t are in millimeters
b) d and t are in inches
c) d is taken from standard chart and t is calculated
d) t is taken from standard chart and d is calculated
Answer: a
Explanation: Given formula is a relation of diameter and thickness of rivet when d and t are in millimeters. If d and t are in inches then d is not equal to 6 times of square root of t but 1.2 times of square root of t. values of d and t may be taken from standard tables but the condition in the formula must be satisfied.
6. d=1.92√t is the equation for diameter (d) and thickness (t) when _________
a) d and t are in centimeters
b) d and t are in inches
c) d is taken from standard chart and t is calculated
d) t is taken from standard chart and d is calculated
Answer: a
Explanation: Given formula is a relation of diameter and thickness of rivet when d and t are in centimeters.
7. Rivets of 3 to 10 mm shank diameter size are not used for_______
a) sheet metal
b) light structural work
c) heavy steel structure
d) iron sheets
Answer: c
Explanation: Rivets of 3 to 10 mm shank diameter are small rivets. These are used for sheet metal and light structural work. These rivets are not used for heavy steel structures.
8. Size of large rivets varies from _______ shank diameter.
a) 3 to 10 mm
b) 5 to 20 mm
c) 10 to 15 mm
d) 12 to 48 mm
Answer: d
Explanation: Large rivets are of size 12 to 48 mm shank diameter. These rivets are used for heavy steel structures. Rivets ranging from 3 to 10 mm are small rivets.
9. Thickness of the plates to be joined and the type of joint decides the _______ of the rivet needed.
a) type of head
b) diameter
c) length
d) holes
Answer: c
Explanation: Length of the rivet needed is decided from the thickness of the plates and the type of joint. Diameter is decided from thickness of plate only. Along with it, some standards are considered.
10. Caulking tool is used for ________ joint.
a) loose
b) tight
c) leak-proof
d) every rivet
Answer: c
Explanation: Caulking tool is used for making a leak-proof joint. For boiler construction or applications where leak-proof joints are required, the edges are furthered hammered. A caulking tool whose shape is that of a blunt chisel is used to make a leak-proof joint.
10. Fullering tool is used for ________ joint.
a) loose
b) tight
c) leak-proof
d) every rivet
Answer: c
Explanation: Fullering tool is used for making a leak-proof joint. For boiler construction or applications where leak-proof joints are required, the edges are furthered hammered. A fullering tool whose thickness is equal to thickness of riveted plate is used to make a leak-proof joint.