Simple Manometer

Q. Pressure of 200 kPa is equivalent to the head of z metre of liquid having relative density 1.59. The value of z(m) is ?

1. 11.6
2. 11.82
3. 12.82
4. 13.14

Q. The pressure gauges $G_{1}and{G}_2$ installed on the system show pressure of $P_{G1}$ =5.00 bar and $P_{G2}$=1.00 bar. The value of unknown pressure P is [Atmospheric pressure = 1.01 bar]

1. 1.01 bar
2. 2.01 bar
3. 5.00 bar
4. 7.01 bar

Q. A mercury water manometer has a gauge difference of 0.8 m. The difference in pressure measured in metres of water is

1. 0.8
2. 1.06
3. 10.05
4. 8.02

Q. If a hole is made in the Torricelli's vacuum portion of a barometer, then the mercury

1. level will fall in the stem and the mercury will collect in the reservoir
2. level will oscillate between reservoir level and original level of the mercury in the stem
3. will spill through the hole made
4. level in the stem will remain at the same level indicating atmospheric pressure

Q. Mercury is used in pressure measuring devices because of :

1. High density

2. Low vapour pressure

3. Sharp meniscus

4. Low freezing point

1. 1, 3 and 4
2. 2, 3 and 4 only
3. 1 and 4 only
4. 1, 2, 3 and 4