At the point of boundary layer separation in fluid flow, the
A. Shear stress is maximum
B. Velocity gradient is flat
C. Density variation is maximum
D. Shear stress is zero
Answer: Option A
A. Shear stress is maximum
B. Velocity gradient is flat
C. Density variation is maximum
D. Shear stress is zero
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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