The entropy change for a spontaneous process is
A. > 0 for the system
B. < 0 for the system
C. > 0 for the system & the surrounding
D. < 0 for the system & the surrounding
Answer: Option D
A. > 0 for the system
B. < 0 for the system
C. > 0 for the system & the surrounding
D. < 0 for the system & the surrounding
Answer: Option D
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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