Civil Engineering MCQJE Level Civil Engineering
For an incompressible fluid flowing through a pipe, the continuity equation states:
Fluid MechanicsFluid MechanicsEASY
Choose the correct answer
A
A1 + V1 = A2 + V2
B
A1V1 = A2V2 (volumetric flow rate constant)
C
V1/A1 = V2/A2
D
P1A1 = P2A2
Correct Answer
B. A1V1 = A2V2 (volumetric flow rate constant)
Why is this the answer?
Continuity: A1V1 = A2V2 (conservation of mass for incompressible flow). Where A = cross-sectional area, V = average velocity. If pipe narrows, velocity increases. For compressible flow: ρ1A1V1 = ρ2A2V2. This is the foundational flow equation.
Related Fluid Mechanics MCQs
More solved Fluid Mechanics questions for AE/JE Civil Engineering exams.
- The 'tsunami' is distinguished from wind waves by:
- The 'specific energy' in open channel flow is:
- The 'draft tube' in a reaction turbine (Francis/Kaplan) serves to:
- Two identical pumps in 'series' vs. 'parallel' connection:
- The 'flow net' for seepage analysis consists of:
- The 'cavitation' damage to hydraulic turbines and pump impellers appears as:
Practice more Civil Engineering questions
This MCQ belongs to JE Level Premium Test Series. Full tests include timed attempts, rank comparison and subject-wise analysis.