With increase in compression ratio, the volumetric efficiency of air compressor
A. Increases
B. Decreases
C. Remains same
D. May increase or decrease (depends on the suction pressure)
Answer: Option A
A. Increases
B. Decreases
C. Remains same
D. May increase or decrease (depends on the suction pressure)
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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