A differential manometer is attached to two tanks, as shown in Fig. between chambers A and B. 1.1 Chamber A SAE 30 oil Mercury Calculate the pressure difference Chamber B Carbon tetrachloride -67.1 KN/m2 O -37.1 KN/m2 O none of the above -57.1 KN/m2 O -47.1 kN/m2 O

12. A pipe contains an oil of sp. gr. 0.8. A differential manometer connected at the two points A and B of pipe shows a difference in mercury level as 20 cm. Find the difference of pressure at the two points (Ans. 25113.6 Nm] 13. A U-tube differential manometer connects two pressure pipes A and B. Pipe A contains carbon tetrachloride having a specific gravity 1.594 under a pressure of 11.772 N/cm and pipe B contains oll of sp. gr. 0.8 under a pressure of 11.772 N/em. The pipe A lies 2.5 m above pipe B. Find the difference of [Ans. 31.36 cm of mercury] 14. A differential manometer is connected at the two points A and B as shown in Fig, 2.25. At B air pressure [Ans, 6.91 Nicm) pressure measured by mercury as fluid filling U-tube. is 7.848 N/cm (abs.), find the absolute pressure at A. AIR WATER OIL Sp. gr.0.8 OIL Sp. gr. 0.8 50'cm I. 30'am 100 am 50 cm MERCURY Sp. gr.13.6 WATER Fig. 2.25 Fig. 2.26

13. A U-tube differential manometer connects two pressure pipes A and B. Pipe A contains carb tetrachloride having a specific gravity 1.594 under a pressure of 11.772 N/cm2 and pipe B contains oil of sp. gr. 0.8 under a pressure of 11.772 N/em. The pipe A lies 2.5 m above pipe B. Find the difference of pressure measured by mercury as fluid filling U-tube. 14. A differential manometer is connected at the two points A and B as shown in Fig. 2.25. At B air pressu is 7.848 N/cm² (abs.), find the absolute pressure at A. [Ans. 31.36 cm of mercury] [Ans, 6.91 N/em) AIR B WATER OIL Sp. gr.0.8 OIL Sp. gr. 0.8 50'cm 30 cm om 100 cm 50 cm 10 cm MERCURY Sp. gr. 13.6 WATER Fig. 2.25 Fig. 2.26

Figure Q1 (a) shows the tank attached with piezometer tubes. The pressure gauge A is 2.3 kPa. The specific weight for the air is 12.0 N/m', the specific weight for gasoline is 6670 N/m³ and the specific weight for the glycerin is 12360 N/m³. Find the elevation level, ZB and Zc of the liquid (in meters) in the open piezometer tubes B and C. A B C 2 m Air 1.5 m Gasoline ZB Zc 1 m Glycerin Figure Q1 (a)