Answer:
99.019 kPa
Step-by-step explanation:
= Atmospheric pressure = 100 kPa
= Density of water in manometer = 1000 kg/m³
g = Acceleration due to gravity = 9.81 m/s²
h = Difference in height = 100 mm
As the pressure in the test section is lower than the pressure of the atmosphere it will be subtracted.
The absolute pressure in the test section is given by

The absolute pressure in the test section is 99.019 kPa