IndiaBIX

Mechanical Engineering - Steam Nozzles and Turbines

Exercise : Steam Nozzles and Turbines - Section 3
6.
In a nozzle, the effect of supersaturation is to
decrease dryness fraction of steam
decrease specific volume of steam
increase the entropy
increase the heat drop
Answer: Option
Explanation:
No answer description is available. Let's discuss.
7.
Which of the following statement is correct?
The efficiency of steam turbines is greater than steam engines.
A flywheel is a must for steam turbine.
The turbine blades do not change the direction of steam issuing from the nozzle
The pressure of steam, in reaction turbines, is increased in fixed blades as well as in moving blades
Answer: Option
Explanation:
No answer description is available. Let's discuss.
8.
The pressure velocity compounded impulse turbine allows a bigger pressure drop and hence __________ number of stages are required.
more
less
Answer: Option
Explanation:
No answer description is available. Let's discuss.
9.
If the critical pressure ratio for steam is 0.546, then the steam is initially
wet steam
dry saturated steam
superheated steam
none of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.
10.
Which of the following statement is wrong?
The critical pressure gives the velocity of steam at the throat equal to the velocity of sound.
The flowin the convergent portion of the nozzle is sub-sonic.
The flow in the divergent portion of the nozzle is super-sonic.
To increase the velocity of steam above sonic velocity (super-sonic) by expanding steam below the critical pressure, the divergent portion for the nozzle is not necessary.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Quick links
Quantitative Aptitude
Verbal (English)
Reasoning
Programming
Interview
Placement Papers