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- Question
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.
- Correct Answer
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- 1. 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
- 2. 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
- 3. 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
- 4. In a hydrodynamic lubricated bearing
Options- A. there is a thick film of lubricant between the journal and the bearing
- B. there is a thin film of lubricant between the journal and the bearing
- C. there is no lubricant between the journal and the bearing
- D. the lubricant is forced between the journal and the bearing, by external pressure Discuss
- 5. In unilateral system of tolerance, the tolerance is allowed on
Options- A. one side of the actual size
- B. one side of the nominal size
- C. both sides of the actual size
- D. both sides of the nominal size Discuss
- 6. 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
- 7. 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 Discuss
- 8. 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
- 9. A column is known as a long column if the slenderness ratio is
Options- A. 40
- B. 50
- C. 70
- D. 100 Discuss
- 10. 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
Machine Design problems
Search Results
Correct Answer: 1.5 d
Correct Answer: load is in between the fulcrum and effort
Correct Answer: abrupt change of cross-section
Correct Answer: there is a thick film of lubricant between the journal and the bearing
Correct Answer: one side of the nominal size
Correct Answer: is directly proportional to
Correct Answer: Correct
Correct Answer: socket joint
Correct Answer: 100
Correct Answer: endurance limit
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