Hydraulics and Fluid Mechanics in ME
The hydraulic grade line is

always above the centre line of pipe
never above the energy grade line
All of these
always sloping downward in the direction of flow

ANSWER DOWNLOAD EXAMIANS APP

Hydraulics and Fluid Mechanics in ME
Coefficient of resistance is the ratio of

Area of jet at vena-contracta to the area of orifice
Loss of head in the orifice to the head of water available at the exit of the orifice
Actual discharge through an orifice to the theoretical discharge
Actual velocity of jet at vena-contracta to the theoretical velocity

ANSWER DOWNLOAD EXAMIANS APP