Discussion
Home ‣ Mechanical Engineering ‣ Steam Nozzles and Turbines See What Others Are Saying!
- Question
The discharge is __________ at critical pressure.
Options- A. zero
- B. minimum
- C. maximum
- Correct Answer
- maximum
- 1. In the relation VTn = C, the value of n for high speed steel tools varies from 0.25 to 0.40.
Options- A. Agree
- B. Disagree Discuss
- 2. The C.O.P. of an absorption type refrigerator is given by (where T1 = Temperature at which the working substance receives heat, T2 = Temperature of cooling water, and T3 = Evaporator temperature)
Options- A.
- B.
- C.
- D.
Discuss
- 3. If the tearing efficiency of a riveted joint is 50%, then ratio of rivet hole diameter to the pitch of rivets is
Options- A. 0.20
- B. 0.30
- C. 0.50
- D. 0.60 Discuss
- 4. An open belt drive is used when
Options- A. shafts are arranged parallel and rotate in the opposite directions
- B. shafts are arranged parallel and rotate in the same directions
- C. shafts are arranged at right angles and rotate in one definite direction
- D. driven shaft is to be started or stopped whenever desired without interferring with the driving shaft Discuss
- 5. In a riveted joint, when the rivets in the various rows are opposite to each other, the joint is said to be
Options- A. chain riveted
- B. zig-zag riveted
- C. diamond riveted
- D. none of these Discuss
- 6. In plunge grinding
Options- A. the work is reciprocated as the wheel feeds to produce cylinders longer than the width of wheel face
- B. the work rotates in a fixed position as the wheel feeds to produce cylinders equal to or shorter than the width of wheel face
- C. the work is reciprocated as the wheel feeds to produce cylinders shorter than the width of wheel face
- D. the work rotates in a fixed position as the wheel feeds to produce cylinders longer than the width of wheel face Discuss
- 7. The abrasive recommended for grinding materials of high tensile strength is
Options- A. silicon carbide
- B. aluminium oxide
- C. sand stone
- D. diamond Discuss
- 8. The unit of Young's modulus is same as that of stress.
Options- A. True
- B. False Discuss
- 9. Glazing in grinding wheels can be decreased by
Options- A. using a harder wheel or by increasing the wheel speed
- B. using a softer wheel or by decreasing the wheel speed
- C. using a harder wheel or by decreasing the wheel speed
- D. using a softer wheel or by increasing the wheel speed Discuss
- 10. Threading is an operation of
Options- A. smoothing and squaring the surface around a hole
- B. sizing and finishing a small diameter hole
- C. producing a hole by removing metal along the circumference of a hollow cutting tool
- D. cutting helical grooves on the external cylindrical surface Discuss
More questions
Correct Answer: Disagree
Correct Answer:
Correct Answer: 0.50
Correct Answer: shafts are arranged parallel and rotate in the same directions
Correct Answer: chain riveted
Correct Answer: the work rotates in a fixed position as the wheel feeds to produce cylinders equal to or shorter than the width of wheel face
Correct Answer: aluminium oxide
Correct Answer: True
Correct Answer: using a softer wheel or by decreasing the wheel speed
Correct Answer: cutting helical grooves on the external cylindrical surface
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