Discussion
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- Question
Which of the following statement is correct for gears?
Options- A. The addendum is less than dedendum
- B. The pitch circle diameter is equal to the product of module and number of teeth
- C. The pitch circle is always greater than the base circle
- D. all of the above
- Correct Answer
- all of the above
- 1. According to I.B.R., shearing resistance required to shear off the rivet per pitch length (in double shear) is (where n = Number of rivets per pitch length)
Options- A.
d2 x ? x n - B. 1.875 x d2 x ? x n
- C. 2 x d2 x ? x n
- D. 3 x d2x ? x n
Discuss
- 2. For unequal width of butt straps, the thickness of butt straps are
Options- A. 0.75 t for wide strap on the inside and 0.625 t for narrow strap on the outside
- B. 0.75 t for narrow strap on the inside and 0.625 t for wide strap on the outside
- C. 0.75 t for both the straps on the inside and outside
- D. 0.625 t for both the straps on the inside and outside Discuss
- 3. The value of stress concentration factor depends upon
Options- A. material of the part
- B. geometry of the part
- C. material and geometry of the part
- D. none of these Discuss
- 4. The resistance to fatigue of a material is measured by
Options- A. elastic limit
- B. Young's modulus
- C. ultimate tensile strength
- D. endurance limit Discuss
- 5. A column is known as a long column if the slenderness ratio is
Options- A. 40
- B. 50
- C. 70
- D. 100 Discuss
- 6. Slenderness ratio is the ratio of
Options- A. maximum size of column to minimum size of column
- B. width of column to depth of column
- C. effective length of column to least radius of gyration of the column
- D. effective length of column to width of column Discuss
- 7. Screws used for power transmission should have
Options- A. Low efficiency
- B. high efficiency
- C. very fine threads
- D. strong teeth Discuss
- 8. 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
- 9. A transmission shaft includes
Options- A. counter shaft
- B. line shaft
- C. over head shaft
- D. all of these Discuss
- 10. In order to obtain the bolts of uniform strength, an axial hole is drilled through the head as far as the threaded portion such that the area of shank becomes equal to the root area of the thread.
Options- A. True
- B. False Discuss
Machine Design problems
Search Results
Correct Answer: 1.875 x
d2 x ? x n Correct Answer: 0.75 t for wide strap on the inside and 0.625 t for narrow strap on the outside
Correct Answer: material and geometry of the part
Correct Answer: endurance limit
Correct Answer: 100
Correct Answer: effective length of column to least radius of gyration of the column
Correct Answer: high efficiency
Correct Answer: shafts are arranged parallel and rotate in the same directions
Correct Answer: all of these
Correct Answer: True
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