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

12.Diamond riveted joint can be adopted in the case of following type of joint

13.Rivets are made of following type of material

14.The stress induced in a body due to suddenly applied load compared to when it is applied gradually is

15.The maximum strain energy that can be stored in a body is known as