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55.

The value of shear stress which is induced in the shaft due to the applied couple varies

A.	from maximum at the centre to zero at the circumference	B.	from zero at the centre to maximum at the circumference
C.	from maximum at the centre to mini-mum at the cricumference	D.	from minimum at the centre to maxi-mum at the circumference

56.

The weakest section of a diamond riveting is the section which passes through

A.	the first row	B.	the second row
C.	the central row	D.	one rivet hole of the end row

57.

The Young's modulus of a wire is defined as the stress which will increase the length of wire compared to its original length

A.	half	B.	same amount
C.	double	D.	one-fourth

58.

True stress-strain curve for materials is plotted between

A.	load/original cross-sectional area and change in length/original length	B.	load/instantaneous cross-sectional area original area and log.
C.	load/instantaneous cross-sectional area and change in length/original length	D.	load/instantaneous area and instantaneous area/original area

59.

When it is indicated that a member is elastic, it means that when force is applied, it will

A.	not deform	B.	be safest
C.	stretch	D.	not stretch

60.

When two plates are butt together and riveted with cover plates with two rows of rivets, the joi;it is known as

A.	lap point	B.	butt joint
C.	single riveted single cover butt joint	D.	double riveted double cover butt joint

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