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Consider the following statements.
1. SI unit of atmospheric pressure is Nm-2 or pascal and CGS unit is dyne/cm2.
2. The barometer is a device by which the atmospheric pressure is measured.
3. The standard atmospheric pressure is the pressure required of 76 cm of Hg column or 760 mm of Hg column, which is equivalent to 1 atm.
Which of the statements given above is/are correct?
The highest pressure gas of a mixture has partial pressure p, the partial pressure of other gases decreases by factor of 2n-1, the partial pressure of second gases decreases by a factor of 2, partial pressure of third gas increases by 4, and so on, if the total pressure of gas mixture is 31p/16, how many gases are present in the mixture?
Which of the following statements about Pascal’s principle is true for the fluid’s pressure? A. It is valid only for incompressible fluids B. It explains why light objects float C. It explains why the pressure is greater at the bottom of a lake than at the surface D. It is valid only for objects that are less dense than water
What is the equivalent pressure in Pascal for 1atm pressure?
Blood pressure is measured by mercury manometer and a stethoscope by wrapping a closed air-filled jacket around the upper arm of a person at the level of the heart. The systolic pressure (the maximum pressure when the heart is pumping) and the diastolic pressure (the minimum pressure when the heart is resting) of a healthy person are indicated as 120/80 respectively. These values are expressed in:
With reference to the Pressure, consider the following statements: 1. A column of air exerts weight in terms of pressure on the surface of the earth. 2. The weight of the column of air at a given place and time is called air pressure or atmospheric pressure. 3. Atmospheric pressure is measured as force per unit area. Which of the following statement given above is/are correct?
With reference to the Air pressure, consider the following statements: 1. The weight of a column of air contained in a unit area from the mean sea level to the top of the atmosphere is called the atmospheric pressure. 2. In the lower atmosphere, the pressure increases rapidly with height. 3. The horizontal pressure gradient force is much larger than that of the vertical pressure gradient. Which of the above statement is/are correct?
Consider the following statements: 1. In an Impulse turbine, the pressure of the flowing water remains un- changed and is equal to atmospheric Pressure. 2. In Impulse turbines, the water impinges on the buckets with ‘Pressure energy’. 3. In a Reaction turbine, the pressure of the flowing water remains un- changed and is equal to atmospheric pressure. Which of the above statements is/are correct?
Relative humidity is given by (where pv = Partial pressure of water vapour, pb = Barometric pressure, ps = Pressure of saturated air, pd = Pressure at dry bulb temperature, pw = Saturation pressure corresponding to wet bulb temperature, and μ = Degree of saturation)
What is the absolute pressure experienced by a pressure sensor, if the atmospheric pressure of a fluid is 2 atm, gauge pressure is 5 atm and differential pressure is 3 atm?