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Home ‣ Mechanical Engineering ‣ Steam Nozzles and Turbines See What Others Are Saying!
- Question
Which of the following statement is correct?
Options- A. The efficiency of steam turbines is greater than steam engines.
- B. A flywheel is a must for steam turbine.
- C. The turbine blades do not change the direction of steam issuing from the nozzle
- D. The pressure of steam, in reaction turbines, is increased in fixed blades as well as in moving blades
- Correct Answer
- The efficiency of steam turbines is greater than steam engines.
- 1. When a body of mass moment of inertia I (about a given axis) is rotated about that axis with an angular velocity to, then the kinetic energy of rotation is
Options- A. I?
- B. I?2
- C. 0.5I?
- D. 0.5I?2 Discuss
- 2. The periodic time of a particle with simple harmonic motion is __________ proportional to the angular velocity.
Options- A. directly
- B. inversely Discuss
- 3. In a compound steam engine, the first stage of expansion is carried out in a high pressure cylinder whereas the last expansion is completed in low pressure cylinder. The diameter of high pressure cylinder is __________ the lowpressure cylinder.
Options- A. equal to
- B. less than
- C. more than Discuss
- 4. The ratio of the emissive power and absorptive power of all bodies is the same and is equal to the emissive power of a perfectly black body. This statement is known as
Options- A. Wien's law
- B. Stefan's law
- C. Kirchhoff's law
- D. Planck's law Discuss
- 5. A single point tool has
Options- A. rake angle
- B. cutting angle
- C. lip angle
- D. all of these Discuss
- 6. A Tandem type compound engine requires a larger flywheel.
Options- A. True
- B. False Discuss
- 7. The friction experienced by a body, when in motion, is known as
Options- A. rolling friction
- B. dynamic friction
- C. limiting friction
- D. static friction Discuss
- 8. The action of steam in a steam turbine is
Options- A. static
- B. dynamic
- C. static and dynamic
- D. neither static nor dynamic Discuss
- 9. In the manufacturing of lead shots, the property of surface tension is utilised.
Options- A. Agree
- B. Disagree Discuss
- 10. Slip factor in a centrifugal compressor indicates the amount of air leaked from the storage vessel.
Options- A. Yes
- B. No Discuss
More questions
Correct Answer: 0.5I?2
Correct Answer: inversely
Correct Answer: less than
Correct Answer: Kirchhoff's law
Correct Answer: all of these
Correct Answer: True
Correct Answer: dynamic friction
Correct Answer: dynamic
Correct Answer: Agree
Correct Answer: No
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