WorksheetsFinal_Test_Material Testing Lab
Total questions: 15
Worksheet time: 11mins
Recommended lubrication used for the cupping test is
oil
water
graphite
kerosene
When the crack initiated in the sample at that time 7mm is visible in the main scale but not the 6 mm and rotating scale reading just over the linear scale is 65 small divisions. What is the Erichsen Number of the sample if it was done on the setup in our lab.
8.65
7.65
7.35
6.65
Which of the following is of white colour?
penetrant
developer
Wh-cleaner
Wh-remover
Remover is sprayed over the surface to remove penetrant
True
False
DP Test is suitable for rough surface
True
False
Yoke is used in
MP Test
DP Test
Cupping Test
Fatigue Test
DP test can be done on both Ferrous & Non-Ferrous Materials
True
False
Least count of the Impact Test Scale in the Lab was
2J
4J
0.01J
None of these
If 50 Vernier division matches with 49 mm in the main scale then least count of the Vernier scale is ......................
0.50mm
0.02mm
0.98mm
None of these
Toughness of the material
Reduces with increase of temperature
Increases with increase of temperature
First increases then decreases
Does not change with temperature
Which of the following is correct?
Tensile toughness is less than impact toughness.
Toughness can be expressed in Joule unit.
Charpy sample is placed in the setup like cantilever beam
In Charpy Test initial hammer position is 90 degree with vertical
All other options are incorrect.
Quenching of the sample produce
austenite
bainite
pearlite
martensite
Material A is more hardenable than material B. Then for the martensitic transformation of the same sample geometry.
Material A can be quenched at a slower rate than B
Material B can be quenched at a slower rate than A
For the same bending moment setup in a fatigue test if the diameter of the shaft is made half, then maximum stress amplitude will be
None of these
2 times
4 times
16 times
Bending Moment scale in the Fatigue test set-up is of unit
Nm
MPa
kgf
kgf.m
