There are four rivets per pitch length, all in double shear

There are four rivets per pitch length, out of which two are in single shear and two are in double shear

There are five rivets per pitch length, all in double shear

There are five rivets per pitch length, out of which four are in double shear and one is in single shear

increases

decreases

remains constant

none of these

1 in 16

1 in 32

1 in 48

1 in 100

Correct

Incorrect

a thinner nut is tightened down over a thicker or main nut and the main nut is tightened against the thinner nut by loosening

a slot is cut in line with the centre of each face and a split pin passes through two slots in the nut and a hole in the bolt, so that a positive lock is obtained unless the pin shears

a slot is cut about half way through the nut and a small screw is tightened between the nut and the bolt in order to produce more friction

the bottom cylindrical portion is recessed to receive the tip of the locking set screw