Pick out the wrong statement.
(A) For a pressure vessel to be classified as 'thin vessel', the ratio of wall
thickness to mean radius is less than 0.1
(B) For calculating forces and efficiency of riveted joint, either rivet
diameter or rivet hole diameter is used in case of pressure vessel and in structural
work
(C) Longitudinal joint is normally made butt joint to maintain the circularity
of the vessel
(D) Maximum diameter of the opening provided in a pressure vessel, which
does not require any compensation is 200 mm
(A) For a pressure vessel to be classified as 'thin vessel', the ratio of wall
thickness to mean radius is less than 0.1
(B) For calculating forces and efficiency of riveted joint, either rivet
diameter or rivet hole diameter is used in case of pressure vessel and in structural
work
(C) Longitudinal joint is normally made butt joint to maintain the circularity
of the vessel
(D) Maximum diameter of the opening provided in a pressure vessel, which
does not require any compensation is 200 mm