Related Questions

The temperature at which a gas, when subjected to Joule-Thomson expansion, neither cools or heats up, is termed as the __________ temperature. Above this temperature the gas heats up on throttling and below this the gas cools down.
A Isotactic
B Saturation
C Inversion
D Throttling
For a two stage compressor, if index of compression for higher stage is greater than index of compression for lower stage, then the optimum pressure as compared to ideal case will
A Increase
B Decrease
C Remain unaffected
D Other factors control it
The ratio of two specific heats of air is equal to
A 0.17
B 0.24
C 0.1
D 1.41
The ratio of molar specific heats for mono-atomic gas is
A 1
B 1.4
C 1.67
D 1.87
As compared to air standard cycle, in actual working, the effect of variation in specific heats is to
A Increase maximum pressure and maximum temperature
B Reduce maximum pressure and maximum temperature
C Increase maximum pressure and decrease maximum temperature
D Decrease maximum pressure and increase maximum temperature
The gas constant (R) is equal to the __________ of two specific heats.
A Product
B Sum
C Difference
D Ratio
In general, the specific heats of aqueous solutions __________ with increase in the concentration of the solute.
A Increase
B Decrease
C Remain unchanged
D None of these
For minimum work in multistage compression, assuming same index of compression in all stages
A Work done in first stage should be more
B Work done in subsequent stages should increase
C Work done in subsequent stages should decrease
D Work done in all stages should be equal
Highest useful compression ratio (HUCR) is the highest compression ratio at which the
A Engine can run
B Engine gives maximum output
C Engine is most efficient
D Fuel can be used in a test engine without knocking
Ratio of permissible stress in direct compression and bending compression is
A Less than 1
B Between 1 and 1.5
C Between 1.5 and 2.0
D Greater than 2

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