Internal cracks in drawn bars are due to
A. Secondary tensile stresses
B. Temperature gradient in the work piece
C. Heated dies and grips
D. Internal compressive residual stress
Answer: Option A
A. Secondary tensile stresses
B. Temperature gradient in the work piece
C. Heated dies and grips
D. Internal compressive residual stress
Answer: Option A
Which of the following will resist maxi-mum shock & vibration without cracking?
A. Grey cast iron
B. White cast iron
C. Malleable iron
D. Graphite
A. Pulverised fuel
B. Travelling grate stoker firing
C. Circulating fluidised bed
D. Fluidised bed
Isotropic materials have the same __________ in all directions.
A. Induced stresses
B. Density
C. Elastic properties
D. Thermal properties
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