Engineering - Mechanical Engineering

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1.

Aircraft body is usually fabricated by                        
A. welding B. precasting
C. rivetting D. casting



2.

Allen bolts are                        
A. self locking bolts B. designed for shock load
C. used in aircraft application D. provided with hexagonal depression in head



3.

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




4.

Basic shaft 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



5.

Belt slip may occur due to                        
A. heavy load B. loose belt
C. driving pulley too small D. all of the above



6.

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



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