Instrumentation Transducers

Density Measurement

Question 1
Marks : +2 | -2
Pass Ratio : 100%
Manometer system cannot be used for measuring density.
True
False
Explanation:
Manometer system can be used for measuring the density of liquid also.
Question 2
Marks : +2 | -2
Pass Ratio : 100%
Specific volume of all substances depends on ______________
Temperature only
Pressure only
Both temperature and pressure
Temperature and pressure for some
Explanation:
For compressible fluids, specific volume depends on temperature and pressure, for all other substances specific volume depends on temperature only.
Question 3
Marks : +2 | -2
Pass Ratio : 100%
Which of the following represents relation for a pressure change in a column?
hϱg
hϱ
hg
n one of the mentioned
Explanation:
Product of density, acceleration due to gravity and length of the column represents pressure difference in column.
Question 4
Marks : +2 | -2
Pass Ratio : 100%
Which of the following cannot be used for density measurement?
Hydrometer system
Pitot-static device
Air bubbler system
U-tube system
Explanation:
Pitot-static device are used for flow measurement, all other devices are used for density measurement.
Question 5
Marks : +2 | -2
Pass Ratio : 100%
Which of the following device doesn’t uses storage of liquid?
Manometer system
Hydrometer system
U-tube system
Air bubbler system
Explanation:
In U-tube system, density of the liquid is measured by allowing liquid to flow through. It doesn’t require storage of liquid under measurement.
Question 6
Marks : +2 | -2
Pass Ratio : 100%
In air bubbler system, air pressure is measured.
True
False
Explanation:
In air bubbler system, air pressure is measured using air bubbles in measuring liquid.
Question 7
Marks : +2 | -2
Pass Ratio : 100%
Which of the following is represented by a ratio of density of substance to density of water at 400c?
Specific gravity
Mass density
Weight density
Specific density
Explanation:
Specific gravity is the ratio of density of that substance to density of water at 400c.
Question 8
Marks : +2 | -2
Pass Ratio : 100%
____________ can be used for measuring density.
Load cell
pH meter
Pitot static device
Mutimeter
Explanation:
For density measurement, load cell can also be used. It employs an indication of density in terms of force.
Question 9
Marks : +2 | -2
Pass Ratio : 100%
Which of the following represents the correct relationship of density and length of column?
Direct proportionality
Inverse proportionality
Equal
None of the mentioned
Explanation:
Correct relation explaining it is ΔP=hϱg, where density becomes inversely portioned to length.
Question 10
Marks : +2 | -2
Pass Ratio : 100%
Which of the following is used to represent mass per unit volume of a substance?
Mass density
Weight density
Specific density
None of the mentioned
Explanation:
Mass density of a substance is the mass per unit volume of the substance.