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13.

If the rivets in adjacent rows are staggered and the outermost row has only one rivet, the arrangement of the rivets is called                        


A. chain riveting B. zig zag riveting
C. diamond riveting D. cross-cross riveting




14.

In a belt drive, the pulley diameter is doubled, the belt tension and pulley width remaining same. The changes required in key will be                        


A. increase key length B. increase key depth
C. increase key width D. double all the dimensions




15.

In a tensile test on mild steel specimen, the breaking stress as compared to ultimate tensile stress is                        


A. more B. less
C. same D. more/less depending on composition




16.

In a tensile test, near the elastic limit zone, the                        


A. tensile strain increases more quickly B. tensile strain decreases more quickly
C. tensile strain increases in proportion to the stress D. tensile strain decreases in proportion to the stress




17.

In question 56, the internal reaction in bottom 80 cm length will be                        


A. same in both cases B. zero in first case
C. different in both cases D. data are not sufficient to determine same




18.

In the tensile test, the phenomenon of slow extension of the material, i. e. stress increasing with the time at a constant load is called                        


A. creeping B. yielding
C. breaking D. plasticity




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