1-53 The basic barometer can be used to measure the height of a building. If the barometric readings at the top and at the bottom of a building are 730 and 755 mm Hg, respec- tively, determine the height of the building. Take the densities of air and mercury to be 1.18 kg/m³ and 13,600 kg/m³, respectively.

1-72 A mercury manometer (p = 13,600 kg/m) is con- nected to an air duct to measure the pressure inside, The differ- ence in the manometer levels is 15 mm, and the atrmospheric pressure is 100 kPa. (a) Judging from Fig. P1-72, determine if the pressure in the duct is above or below the atmospheric pressure. (b) Determine the absolute pressure in the duct. Air P=? FIGURE P1-72 1-73 Repeat Prob. 1-72 for a differential mercury height of 45 mm. Scanned with CamScanner 1-78 Freshwater and seawater flowing in parallel horizontal pipelines are connected to each other by a double U-tube manometer, as shown in Fig. PI-78. Determine the pressure difference between the two pipelines. Take the density of sea- water at that location to be p umn be ignored in the analysis? 1035 kg/m³. Can the air col- Air Fresb water Sea water Me 1E/ 11-1. FICURE PITS Scanned with CamScanner 1-81 Consider the manometer in Fig. PI-80. If the specific weight of fluid A is 100 kN/m, what is the absolute pressure, in…

Q2:- In multi-choices questions (1-7), answer five of them by choosing the correct answers = 997 kg/m'). What is the absolute pressure theré in 1. You dive 5 m down in the ocean (p which of the following choices? (a) 49 kPa (b) 100 kPa (c) 77 kPa (d) 150 kPa 2. Which of the following choices can be regarded of the ideal gas as compared to a real gas at very high pressure occupies? (a) More volume. (b) Less volume. (c) Unpredictable behaviour. (d) Same volume. (e) No such correlation. 3. What pressure difference does a 10 m column of atmospheric air (p=1.2 kg/m') show in which of the following choices? (a) 0.11 kPa (b) 0.14 kPa (c) 0.12 kPa (d) 0.09 kPa (e) 1.3 kPa ALByally Examiner Ass 4. In a perfect gases, according to Gay-Lussac law the absolute pressure of given mass varies directly as a function of which parameters? (a) volume, if temperature is kept constant. (b) absolute temperature, if volume is kept constant. (c) temperature. (d) remains constant,if volume and temperature are…

The pressure of steam inside a boiler is shown by a pressure gauge 120 N/cm². Take barometer reads 770 mm of mercury. Then its absolute pressure is approximately O A. None of the given answers O B. 130.26 bar O C. 1.3026 x 106 N/mm2 O D. 1302.6 kPa

If the atmospheric pressure is 1.01325 bar, what will be the height of the mercury column in a barometer? The density of mercury is 13600 kg/m3.

A gasoline line is connected to a pressure gage through a double-U manometer, as shown in Fig. P1–110. If the reading of the pressure gage is 370 kPa, determine the gage pressure of the gasoline line.