On decreasing the grain size of a polycrys-talline material, the property most likely to deteriorate is
A. Creep
B. Toughness
C. Tensile strength
D. Fatigue
Answer: Option B
A. Creep
B. Toughness
C. Tensile strength
D. Fatigue
Answer: Option B
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
Why toughness? because creep is also deteriote on decreasing the grain size