Online Mechanical Engineering Test - Steam Nozzles and Turbines Test
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- Total number of questions: 20.
- Time allotted: 30 minutes.
- Each question carries 1 mark; there are no negative marks.
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- All the best!
Marks : 2/20
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Test Review : View answers and explanation for this test.
The steam enters the nozzle at a
In a De-Laval nozzle expanding superheated steam from 10 bar to 0.1 bar, the pressure at the minimum cross-section (i. e. pressure at throat, p2) will be
The action of steam in a steam turbine is
De-Laval turbine is a
Steam turbines are used for
A steam nozzle converts
The flow of steam is super-sonic
The velocity of steam at throat of the nozzle is __________ the velocity of sound.
In an impulse turbine
In a reaction turbine
Rateau turbine is
Curtis turbine is a
The ratio of the isentropic heat drop to the heat supplied, is called
The ratio of the work delivered at the turbine shaft to the heat supplied is called overall thermal efficiency of turbine.
A nozzle is said to be a convergent-divergent nozzle, when the cross-section of a nozzle first decreases from its entrance to throat and then increases from its throat to exit.
When the cross-section of a nozzle __________ continuously from entrance to exit, it is called a convergent nozzle.
The friction present between the steam and the nozzle surfaces reduces the heat drop by
Steam turbines may be classified according to
In turbines, the fluid undergoes a continuous steady flow process and the speed of flow is
The blade friction in the impulse turbine reduces the velocity of steam by __________ while it passes over the blades.
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