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Home ‣ Mechanical Engineering ‣ Steam Nozzles and Turbines Comments
- Question
In a reaction turbine
Options- A. the steam is allowed to expand in the nozzle, where it gives a high velocity before it enters the moving blades
- B. the expansion of steam takes place partly in the fixed blades and partly in the moving blades
- C. the steam is expanded from a high pressure to a condenser pressure in one or more nozzles
- D. the pressure and temperature of steam remains constant
- Correct Answer
- the expansion of steam takes place partly in the fixed blades and partly in the moving blades
- 1. A molecule consisting of one atom is known as
Options- A. monoatomic
- B. diatomic
- C. triatomic
- D. polyatomic Discuss
- 2. The amount of heat required to raise the temperature of __________ water through one degree is called kilojoule.
Options- A. 1 g
- B. 10 g
- C. 100 g
- D. 1000 g Discuss
- 3. A process of heating crude oil to a high temperature under a very high pressure to increase the yield of lighter distillates, is known as
Options- A. cracking
- B. carbonisation
- C. fractional distillation
- D. full distillation Discuss
- 4. Which of the following process can be made reversible with the help of a regenerator?
Options- A. Constant pressure process
- B. Constant volume process
- C. Constant pvn process
- D. all of these Discuss
- 5. A cycle consisting of two constant pressure and two isothermal processes is known as Ericsson cycle.
Options- A. True
- B. False Discuss
- 6. The critical pressure ratio for gases is
Options- A. 0.528
- B. 0.546
- C. 0.577
- D. 0.582 Discuss
- 7. The velocity of steam at throat of the nozzle is __________ the velocity of sound.
Options- A. equal to
- B. less than
- C. more than Discuss
- 8. The reheat factor depends upon
Options- A. initial pressure and superheat
- B. exit pressure
- C. turbine stage efficiency
- D. all of these Discuss
- 9. The ratio of the workdone on the blades per kg of steam to the total energy supplied per stage per kg of steam is called
Options- A. blading efficiency
- B. nozzle efficiency
- C. stage efficiency
- D. mechanical efficiency Discuss
- 10. The discharge through a nozzle is maximum for a certain value of exit pressure. This pressure is known as critical pressure.
Options- A. Agree
- B. Disagree Discuss
Steam Nozzles and Turbines problems
Search Results
Correct Answer: monoatomic
Correct Answer: 1000 g
Correct Answer: cracking
Correct Answer: all of these
Correct Answer: True
Correct Answer: 0.528
Correct Answer: equal to
Correct Answer: all of these
Correct Answer: stage efficiency
Correct Answer: Agree
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