A self locking screw has________________> - PakMcqs

Related Mcqs:

1. Castle nut is a locking device in which__________________?

   A. one smaller nut is tightened over main nut and main nut tightened against smaller one by loosening, creating friction jamming B. a slot is cut partly is middle of nut and then slot reduced by tightening a screw C. a hard fiber or nylon cotter is recessed in the nut and becomes threaded as...

2. Split nut is a locking device in which_________________?

   A. one smaller nut is tightened over main nut and main nut tightened against smaller one by loosening, creating friction jamming B. a slot is cut partly in middle of nut and then slot reduced by tightening screw C. a hard fiber or nylon cotter is recessed in the nut and becomes threaded as the...

3. Elastic nut is a locking device in which__________________?

   A. one small nut is tightened over main nut and main nut tightened against smaller one by loosening, creating friction jamming B. a slot is cut partly in middle of nut and then slot reduced by tightening a screw C. hard fiber or nylon cotter is recessed in the nut and becomes threaded as the...

4. Jam nut is a locking device in which _____________________?

   A. one smaller nut is tightened over main nut and main nut tightened against smaller one by loosening, creating friction jamming B. a slot is cut partly in middle of nut and then slot reduced by tightening a screw C. a hard fiber or nylon cotter is recessed in the nut and becomes threaded as...

5. The crest diameter of a screw thread is same as _____________________?

   A. major diameter B. minor diameter C. pitch diameter D. core diameter E. none of the above...

6. If an application calls for stresses on screw threads in one direction only, then the following type of thread would be best suited ________________?

   A. square B. acme C. buttress D. BSW E. metric...

7. Stress concentration in static loading is more serious in__________________?

   A. ductile materials B. brittle materials C. equally serious in both cases D. depends on other factors E. unpredictable...

8. Resistance to fatigue of a material is measured by________________?

   A. Young’s modulus B. coefficient of elasticity C. elastic limit D. ultimate tensile strength E. endurance limit...

9. The valve rod in a steam engine is connected to an eccentric rod by_________________?

   A. cotter joint B. bolted joint C. kunckle joint D. universal coupling E. gib and cotter joint...

10. Basic hole is one_________________?

    A. whose upper deviation is zero B. whose lower deviation is zero C. whose lower as well as upper deviations are zero D. does not exist E. none of the above...