engineering recuitment BHEL Engineer Trainee Mock Test 2025 Fluid Mechanics Flow Measurement Orificemeter
If the actual velocity of jet at the vena contracta in an orifice meter is ‘V’, the depth of the centre of orifice below the free surface is ‘h’ and ‘g’ is the gravitational acceleration, then the coefficient of velocity ‘Cv ’ is:
1
V / (2gh)1/2
2
4V / (2gh)3/2
3
2gh / (V)1/2
4
2Vgh / 300