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- Question
The square threads are not so strong as V-threads but they offer less frictional resistance to motion than Whitworth threads.
Options- A. Correct
- B. Incorrect
- Correct Answer
- Correct
- 1. The velocity of sliding __________ the distance of the point of contact from the pitch point.
Options- A. is directly proportional to
- B. is inversely proportional to
- C. is equal to cos ? multiplied by
- D. does not depend upon Discuss
- 2. A plate with an elliptical hole in the centre, with semi-major axis (a) perpendicular to the direction of loading and semi-minor axis (b) along the direction of loading, is subjected to a pull P. The maximum stress induced at the edge of the hole is equal to (where ? = Stress for a plate with no hole i.e. nominal stress)
Options- A.
- B.
- C.
- D.
Discuss
- 3. In order to avoid tearing of the plate at an edge, the distance from the centre line of the rivet hole to the nearest edge of the plate should be equal to (where d = Diameter of rivet hole)
Options- A. d
- B. 1.5 d
- C. 2 d
- D. 2.5 d Discuss
- 4. In second type of levers,
Options- A. load is in between the fulcrum and effort
- B. effort is in between the fulcrum and load
- C. fulcrum is in between the load and effort
- D. none of these Discuss
- 5. Stress concentration is caused due to
Options- A. variations in load acting on a member
- B. variations in properties of materials in a member
- C. abrupt change of cross-section
- D. all of these Discuss
- 6. The pipe joint mostly used for pipes carrying water at low pressures is
Options- A. socket joint
- B. nipple joint
- C. union joint
- D. spigot and socket joint Discuss
- 7. A column is known as a long column if the slenderness ratio is
Options- A. 40
- B. 50
- C. 70
- D. 100 Discuss
- 8. 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
- 9. 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
- 10. 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
Machine Design problems
Search Results
Correct Answer: is directly proportional to
Correct Answer:
Correct Answer: 1.5 d
Correct Answer: load is in between the fulcrum and effort
Correct Answer: abrupt change of cross-section
Correct Answer: socket joint
Correct Answer: 100
Correct Answer: endurance limit
Correct Answer: material and geometry of the part
Correct Answer: 0.75 t for wide strap on the inside and 0.625 t for narrow strap on the outside
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