Mechanical Engineering - Steam Nozzles and Turbines
Exercise :: Steam Nozzles and Turbines - Section 1
46. |
The difference of supersaturated temperature and saturation temperature at that pressure is called |
A. |
degree of supersaturation | B. |
degree of superheat | C. |
degree of undercooling | D. |
none of these |
Answer: Option C
Explanation:
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47. |
The maximum efficiency of a reaction turbine is |
Answer: Option B
Explanation:
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48. |
The ratio of the useful heat drop to the isentropic heat drop is called |
A. |
condenser efficiency | B. |
nozzle efficiency | C. |
boiler efficiency | D. |
vacuum efficiency |
Answer: Option B
Explanation:
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49. |
The efficiency of steam turbines may be improved by |
A. |
reheating of steam | B. |
regenerative feed heating | C. |
binary vapour plant | D. |
any one of these |
Answer: Option D
Explanation:
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50. |
In a reaction turbine, when steam flows through the fixed blades, |
A. |
pressure increases while velocity decreases | B. |
pressure decreases while velocity increases | C. |
pressure and velocity both decreases | D. |
pressure and velocity both increases |
Answer: Option B
Explanation:
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