A horizontal 2 inch. I.D. (inside diameter) pipe carries kerosene at 37C, witl density 809kg/m3 and viscosity 0.13kg/(ms). In order to measure the flow rate, th line is to be fitted with a sharp-edged orifice plate, with pressure tapping, connecte to a mercury manometer that reads up to a 15 inch, difference in the mercury level (a) If the largest flow rate of kerosene is expected to be 4.2kg/s, specify the diamete of the orifice plate that would just register the full 15 inch difference between th mercury levels? Assume that Co=0.61. (b) If the orificemeter is replaced by venturimeter having the same , what should be the reading of the manometer Cv=0.98