Discussion
Home ‣ Mechanical Engineering ‣ Steam Nozzles and Turbines See What Others Are Saying!
- Question
In pressure compounding of an impulse turbine, the total pressure drop of the steam does not take place in the first nozzle ring, but is divided equally among all the nozzle rings.
Options- A. Agree
- B. Disagree
- Correct Answer
- Agree
- 1. In a free expansion process,
Options- A. W1 - 2 = 0
- B. Q1 - 2 = 0
- C. dU = 0
- D. all of these Discuss
- 2. If a number of coplaner forces acting at a point be in equilibrium, the sum of clockwise moments must be __________ the sum of anticlockwise moments, about any point.
Options- A. equal to
- B. less than
- C. greater than Discuss
- 3. A body is subjected to a direct tensile stress (?) in one plane. The shear stress is maximum at a section inclined at __________ to the normal of the section.
Options- A. 45° and 90°
- B. 45° and 135°
- C. 60° and 150°
- D. 30° and 135° Discuss
- 4. When a body is subjected to direct tensile stresses (?x and ?y ) in two mutually perpendicular directions, accompanied by a simple shear stress ?xy , then in Mohr's circle method, the circle radius is taken as
Options- A.
- B.
- C.
- D.
Discuss
- 5. The cutting tool in a milling machine is mounted on
Options- A. spindle
- B. arbor
- C. column
- D. knee Discuss
- 6. The assumption, generally, made in the theory of simple bending is that
Options- A. the beam material is perfectly homogenous and isotropic
- B. the beam material is stressed within its elastic limit
- C. the plane sections before bending remain plane after bending
- D. all of the above Discuss
- 7. The maximum propulsive efficiency of a turbo-jet engine is at a speed of
Options- A. 1000 km/h
- B. 2000 km/h
- C. 2400 km/h
- D. 3000 km/h Discuss
- 8. For a shaft, the shear stress at a point is __________ the distance from the axis of the shaft.
Options- A. equal to
- B. directly proportional to
- C. inversely proportional to Discuss
- 9. The volumetric efficiency of a compressor
Options- A. increases with decrease in compression ratio
- B. decreases with decrease in compression ratio
- C. increases with increase in compression ratio
- D. decreases with increase in compression ratio Discuss
- 10. The heat transfer by conduction through a thick sphere is same as through a thick cylinder.
Options- A. True
- B. False Discuss
More questions
Correct Answer: all of these
Correct Answer: equal to
Correct Answer: 45° and 135°
Correct Answer:
Correct Answer: arbor
Correct Answer: all of the above
Correct Answer: 2400 km/h
Correct Answer: directly proportional to
Correct Answer: decreases with increase in compression ratio
Correct Answer: False
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