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- Question
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
- Correct Answer
- shafts are arranged parallel and rotate in the same directions
- 1. Screws used for power transmission should have
Options- A. Low efficiency
- B. high efficiency
- C. very fine threads
- D. strong teeth Discuss
- 2. 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
- 3. 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 Discuss
- 4. 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
- 5. 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
- 6. A transmission shaft includes
Options- A. counter shaft
- B. line shaft
- C. over head shaft
- D. all of these Discuss
- 7. 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
- 8. According to Guest's theory, the failure occurs at a point in a member when the maximum shear stress in a bi-axial stress system reaches the shear stress at elastic limit in simple tension test.
Options- A. True
- B. False Discuss
- 9. Circumferential joint in boilers is used to get the required length of a boiler.
Options- A. True
- B. False Discuss
- 10. Surface endurance limit of gear material is dependent upon its
Options- A. elastic strength
- B. yield strength
- C. brinell hardness number
- D. toughness Discuss
Machine Design problems
Search Results
Correct Answer: high efficiency
Correct Answer: effective length of column to least radius of gyration of the column
Correct Answer: all of the above
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: all of these
Correct Answer: True
Correct Answer: True
Correct Answer: True
Correct Answer: brinell hardness number
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