Related Mcqs:

1. For standard coarse threads of nut, the threads will be as strong in failure by shear as the bolt in tension, if the height of nut (h) is approximately________________?

   A. 0.4 times
   B. 0.6 times
   C. 0.7 times
   D. 0.8 times
   E. 0.9 times the normal diameter of bolt

2. The pitch of threads on a Jock nut in comparison to pitch of nut is_________________?

   A. same
   B. coarser
   C. finer
   D. very coarse
   E. very fine

3. When a nut is tightened by plaping a washer below it, the bolt will be subjected to following type of loads___________________?

   A. compression
   B. tension
   C. shear
   D. combined loads
   E. all of the above

4. If threads on a bolt are left hand, threads on nut will be_____________________?

   A. right hand with same pitch
   B. left hand with same pitch
   C. could be left or right hand
   D. right hand with fine pitch
   E. left hand with fine pitch

5. If d is the normal diameter of a bolt in mm, then the initial tension in kg in a bolt used for making a fluid tight joint as for steam engine cover joint is calculated by the relation_______________?

   A. 102 d
   B. 124 d
   C. 138 d
   D. 151 d
   E. 168 d

6. When a bolt is subjected to shock loading, the resilience of the bolt should be considered in order to prevent breakage at_______________?

   A. shank
   B. head
   C. in the middle
   D. at the thread
   E. anywhere in the bolt

7. The maximum stress due to stress concentration in a bar having circular transverse hole, as compared to its static stress without hole will be_________________?

   A. same in both cases
   B. 2 times more
   C. 3 times more
   D. 4 times more
   E. unpredictable

8. The shearing stresses in the inner face as compared to outer face of the wire in a heavy close coiled spring is_________________?

   A. larger
   B. smaller
   C. equal
   D. larger/smaller depending on diameter of spring coil
   E. unpredictable

9. The following type of nut is used with alien bolt____________________?

   A. alien nut
   B. hexagonal nut
   C. slotted nut
   D. castle nut
   E. any one of the above

10. 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 the nut is screwed on the bolt causing a tight grip
    D. through slots are made at top and a cotter-pin is passed through these and a hole in the bolt, and cotter spitted and bent in reverse direction at other end
    E. none of the above