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# Fluid Mechanics MCQs Test-1

## Fluid Mechanics MCQs Test-1

### Question-based on Fluid Mechanics

#### Useful for all GATE, ESE, PSUs, SSC JE and Other

1. For a Newtonian fluid
(a) Shear stress is proportional to shear strain
(b) Rate of shear stress is proportional to shear strain
(c) Shear stress is proportional to rate of shear strain
(d) Rate of shear stress is proportional to rate of shear strain

2. The dimension of surface tension is:
(a) ML-1
(b) L2T-1
(c) ML-1T1
(d) MT-2

3. The dimension of surface tension is:
(a) N/m2
(b) J/m
(c) J/m2

4. What are the dimensions of kinematic viscosity of a fluid?
(a) LT-2
(b) L2T-2
(c) ML-2T-2
(d) ML-2T-2

5.  Surface tension is due to
(a) Viscous forces
(b) Cohesion
(d) The difference between adhesive and cohesive forces

6. Which property of mercury is the main reason for use in barometers?
(a) High Density
(b) Negligible capillary effect
(c) Very Low vapour pressure
(d) Low compressibility

7.  Which one of the following sets of conditions clear applies to an ideal fluid?
(a) Viscous and compressible
(b) Non-viscous and incompressible
(c) Non-viscous and compressible
(d) Viscous and incompressible

8.  Fluids that require a gradually increasing shear stress to maintain a constant strain rate are known as:
(a) Rhedopectic fluids
(b) Thixotropic fluids
(c) Pseudoplastic fluids
(d) Newtonian fluids

9.  The capillary rise at 20C in clean glass tube of 1mm diameter  containing water is approximately
(a) 15mm
(b) 50mm
(c) 20mm
(d) 30mm

10. Which can a piezometer be not used for pressure measurement in pipes?
(a) The pressure difference is low
(b) The velocity is high
(c) The fluid in the pipe is a gas
(d) The fluid in the pipe is highly viscous

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