Aircraft Materials - Hardness testing - Brinell and Rockwell Hardness Online Exam Quiz
Aircraft Materials - Hardness testing - Brinell and Rockwell Hardness GK Quiz. Question and Answers related to Aircraft Materials - Hardness testing - Brinell and Rockwell Hardness. MCQ (Multiple Choice Questions with answers about Aircraft Materials - Hardness testing - Brinell and Rockwell Hardness
For __ materials, there is no correspondence between tensile strength and hardness.
Options
A : soft
B : hard materials
C : steel
D : carbon
If the load being applied is 2000kg, and the area of impression is 250 Square millimetres, what is the Brinell number of the test material?
Options
A : 80 kg per square millimeter
B : 25 kg per square millimeter
C : 20 kg per square millimeter
D : 8 kg per square millimeter
In the beginning of the Rockwell hardness experiment, the reading dial is set to ___
Options
A : 100
B : 50
C : 0.1
D : 0
In the Brinell testing method, the load should be pressed for a minimum of __
Options
A : 1000 seconds
B : 60 seconds
C : 10 seconds
D : 3 seconds
It is impossible to find a relation between hardness and tensile strength.
Options
A : TRUE
B : FALSE
C : -
D : -
It is vital that surfaces that have to be tested to determine the hardness of the material must be free of ___
Options
A : ridges
B : evenness
C : smoothness
D : thickness
Rockwell hardness test uses either a __ ball or ___ cone for measuring hardness.
Options
A : steel, diamond
B : diamond, steel
C : carbon, iron
D : iron, carbon
The Brinell testing method uses a steel ball of __ diameter for testing purposes.
Options
A : 26mm
B : 1mm
C : 10m
D : 10mm
The Rockwell hardness testing method typically uses certain amounts of load. Which of the following is not one of the loads used?
Options
A : 150kg
B : 60kg
C : 5kg
D : 100kg
There is a necessity to find the hardness of a material without causing deformation in them.
Options
A : TRUE
B : FALSE
C : -
D : -
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