The ratio of the angle of internal friction of storage material at the time of filling to that at the time of emptying is -
(a) Less than one
(b) Equal to or less than one
(c) Equal to one
(d) Greater than 1.0.
The correct Answer Is
(b) Equal to or less than one
(a) Less than one
(b) Equal to or less than one
(c) Equal to one
(d) Greater than 1.0.
The correct Answer Is
(b) Equal to or less than one
