A. 30°
B. 45°
C. 60°
D. 80°
E. 85°.
Related Mcqs:
- The edges of the plates for cylindrical vessels are usually bevelled to an angle of 80° for_________________?
A. reducing stress concentration
B. ease of manufacture
C. safety
D. fullering and caulking
E. all of the above - In order to avoid tearing of the plate at edge, the distance from the center line of the rivet hole to the nearest edge of the plate in terms of dia of rivet d should be equal to__________________?
A. d
B. 1.25 d
C. 1.5 d
D. 1.75 d
E. 2 d. - The notch angle of the Izod impact test specimen is________________?
A. 10°
B. 20°
C. 30°
D. 45°
E. 60°. - The included angle in unified of American National threads is___________________?
A. 60°
B. 55°
C. 47°
D. 29°
E. none of the above - In standard taper roller bearings, the angle of taper of outer raceway is___________________?
A. 5°
B. 8°
C. 15°
D. 25°
E. 40°. - Resilience of a material is important, when it is subjected to________________?
A. combined loading
B. fatigue
C. thermal stresses
D. wear and tear
E. shock loading - Stress concentration is caused due to_____________________?
A. variation in properties of material from point to point in a member
B. pitting at’points or areas at which loads on a member are applied
C. abrupt change of section
D. all of the above
E. none of the above - For applications involving high stresses in one direction only the following type of thread would be best suited______________________?
A. ISO metric thread
B. acme thread
C. square thread
D. buttress thread
E. British Association thread - Antifriction bearings are__________________?
A. sleeve bearings
B. hydrodynamic bearings
C. thin lubricated bearings
D. ball and roller bearings
E. none of the above - Gear box is used___________________?
A. to produce torque
B. for speed reduction
C. to obtain variable speeds
D. to increase efficiency of system
E. to damp out vibrations
