Instrumentation Transducers

Servo Operated Manometer

Question 1
Marks : +2 | -2
Pass Ratio : 17%
As specific gravity increases, the evaporation rate of manometric liquid decreases.
True
False
Explanation:
There is no relation between specific gravity and evaporation rate.
Question 2
Marks : +2 | -2
Pass Ratio : 50%
Manometers are generally used to measure _______________
Pressure
Voltage
Temperature
Humidity
Explanation:
Manometers are generally used to measure pressure.
Question 3
Marks : +2 | -2
Pass Ratio : 50%
Which of the following has a low evaporation rate than water?
Mercury
Transformer oil
Tetrabromoethane
All of the mentioned
Explanation:
Both mercury, transformer oil and tetrabromoethane have low evaporation rate than water.
Question 4
Marks : +2 | -2
Pass Ratio : 17%
Band width of servo operated manometers are limited to ___________________
5 Hz
5 KHz
5 MHz
5 GHz
Explanation:
Bandwidth of servo operated manometers are limited to 5 Hz which is satisfactory for pressure measurement.
Question 5
Marks : +2 | -2
Pass Ratio : 50%
Atmospheric pressure can be expressed in _______________
N
N/m
N/m2
None of the mentioned
Explanation:
Atmospheric pressure can be expressed in newton per square of meter.
Question 6
Marks : +2 | -2
Pass Ratio : 33%
Which of the following is the lowest unit for pressure?
Bar
Micron
Torr
Microbar
Explanation:
Micron is the unit representing very low pressure values such as vacuum pressure.
Question 7
Marks : +2 | -2
Pass Ratio : 17%
Which of the following represents pressure exerted by a column of mercury of 1 mm?
Micron
Torr
Microbar
Bar
Explanation:
Torr is the pressure exerted by 1mm column of mercury.
Question 8
Marks : +2 | -2
Pass Ratio : 17%
Which of the following materials can be used in high pressure manometer tube?
Glass
Stainless steel
Transparent plastic tube
None of the mentioned
Explanation:
On high pressure applications, manometer tubes are made up of stainless steel which is nonmagnetic.
Question 9
Marks : +2 | -2
Pass Ratio : 33%
Water is non-manometric liquid.
True
False
Explanation:
Water is manometric liquid, but there is a problem of evaporation.
Question 10
Marks : +2 | -2
Pass Ratio : 17%
By conversion, 1 bar= _________ N/m2.
104
105
106
107
Explanation:
1 bar = 105 N/m2 and 1 bar = 106 dynes/cm2.