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- Question
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
- Correct Answer
- abrupt change of cross-section
- 1. 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
- 2. 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
- 3. When a bolt is subjected to shock loading, the resilience of the bolt should be considered in order to prevent breakage at the
Options- A. head
- B. shank
- C. thread
- D. middle Discuss
- 4. When screw threads are to be used in a situation where power is being transmitted in one direction only, then the screw threads suitable for this will be
Options- A. square threads
- B. acme threads
- C. knuckle threads
- D. buttress threads Discuss
- 5. In radial cams, the follower moves
Options- A. in a direction perpendicular to the cam axis
- B. in a direction parallel to the cam axis
- C. in any direction irrespective of cam axis
- D. along the cam axis Discuss
- 6. 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
- 7. 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
- 8. 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
- 9. 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
- 10. 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
Machine Design problems
Search Results
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: thread
Correct Answer: buttress threads
Correct Answer: in a direction perpendicular to the cam axis
Correct Answer: load is in between the fulcrum and effort
Correct Answer: 1.5 d
Correct Answer:
Correct Answer: is directly proportional to
Correct Answer: Correct
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