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:
|
| 47. |
The maximum efficiency of a reaction turbine is |
Answer: Option B
Explanation:
|
| 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:
|
| 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:
|
| 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:
|
