Hydraulics and Fluid Mechanics in ME
An orifice is said to be large, if

The velocity of flow is large
The available head of liquid is more than 5 times the height of orifice
The size of orifice is large
The available head of liquid is less than 5 times the height of orifice

ANSWER DOWNLOAD EXAMIANS APP

Hydraulics and Fluid Mechanics in ME
A closed tank containing water is moving in a horizontal direction along a straight line at a constant speed. The tank also contains a steel ball and a bubble of air. If the tank is decelerated horizontally, theni) the ball will move to the frontii) the bubble will move to the frontiii) the ball will move to the reariv) the bubble will move to the rear Find out which of the above statements are correct ?

(iii) and (iv)
(ii) and (iii)
(i) and (iv)
(i) and (ii)

ANSWER DOWNLOAD EXAMIANS APP

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

Actual velocity of jet at vena contracta to the theoretical velocity
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
Loss of head in the orifice to the head of water available at the exit of the orifice

ANSWER DOWNLOAD EXAMIANS APP