A U-tube manometer containing a liquid of specific gravity S measures gauge pressure of water flowing in a pipe.h2 = difference in level of manometric liquid in the two limbsh1 = height of water between point of connection of pressure tap and level of manometric liquid in the limb to which it is connected by a tube bending down.The measured gauge pressure is:

A U-tube manometer containing a liquid of specific gravity S measures

1.	A U-tube manometer containing a liquid of specific gravity S measures gauge pressure of water flowing in a pipe.h2 = difference in level of manometric liquid in the two limbsh1 = height of water between point of connection of pressure tap and level of manometric liquid in the limb to which it is connected by a tube bending down.The measured gauge pressure is:
A.	h2 m of manometric liquid
B.	h2.S m water
C.	(h2.S – h1) m of water
D.	h1 m water
Answer» D. h1 m water