railway RRB JE (CBT I + CBT II) Mock Test 2024 Fluid Mechanics Pressure Measurement Pressure Measuring Instruments
Which of following statements is/are true for manometers?
l) Manometers are easy to operate.
ll) Manometers do not require frequent calibration.
lll) Manometers are made of steel.
1
Only II and III
2
Only I and II
3
Only I and III
4
I, II and III