Related Questions

If both Stirling and Carnot cycles operate within the same temperature limits, then efficiency of Stirling cycle as compared to Carnot cycle
A More
B Less
C Equal
D Depends on other factors
Thermodynamic cycle involved in the working of a thermal power plant is the __________ cycle.
A Joule
B Carnot
C Rankine
D Brayton
Two men and women are entrusted with a task. The second man needs three hours more to cope up with the job than the second man and the woman would need working together. The first man, working alone, would need as much time as second man and the woman working together. The first man working alone, would spend eight hours less than the double period of the time second man would spend working alone. How much time would the two men and the women need to complete the task if they all asked together?
A 1 hour
B 2 hours
C 3 hours
D 4 hours
E 5 hours
For a thermodynamic process to be reversible, the temperature difference between hot body and working substance should be
A Zero
B Minimum
C Maximum
D Infinity
Rankine cycle efficiency of a good steam power plant may be in the range of
A 15 to 20 per cent
B 35 to 45 per cent
C 70 to 80 per cent
D 90 to 95 per ceut
The critical pressure ratio for initially superheated steam is __________ as compared to initially dry saturated steam.
A More
B Less
C Same
D None of these
The ratio of exit pressure to inlet pressure for maximum mass flow rate per unit area of steam through a nozzle when steam is initially dry saturated is
A 0.6
B 0.578
C 0.555
D 0.5457
The isentropic expansion of steam through nozzle for the steam initially dry saturated at inlet is approximated by equation.
A pv = C
B pv1A = C
C pv1i = C
D pv
Dry saturated steam can be converted into superheated steam by
A Increasing its cross-sectional area of flow
B Passing it through a pressure reducing valve
C Forcing it downwards through a vertical tube
D None of these
In case of steam distillation, the steam leaving the liquid is not completely saturated with distillate vapour, because
A Temperature is less
B Total pressure is less
C Mixing of steam with the material being vaporised is not so intimate as to result in equilibrium condition
D Saturated steam is used for steam distillation

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