Explore topic-wise MCQs in Fluid Mechanics.

This section includes 34 Mcqs, each offering curated multiple-choice questions to sharpen your Fluid Mechanics knowledge and support exam preparation. Choose a topic below to get started.

1.

What is the viscosity of water at 30oC?

A. 80.1
B. 0 .801
C. 801
D. 0.081
Answer» C. 801
Discussion
2.

Define Viscosity?

A. Resistance to flow of an object
B. Resistance to flow of air
C. Resistance to flow of fluid
D. Resistance to flow of heat
Answer» D. Resistance to flow of heat
Discussion
3.

Determine the resultant hydrostatic force acting on the submerged rectangular plate PaPb. Plate has width of 1.5m. Density of water 1000kg/m3.

A. 154.5 kN/m
B. 54.5 kN/m
C. 14.5 kN/m
D. 112.5 kN/mView Answer
Answer» B. 54.5 kN/m
Discussion
4.

∑Fx=0, ∑Fy=0 and ∑Fz=0 are vector equations for the determination of the equilibrium equations for the fluid pressure in the body immersed in the liquid.

A. True
B. False
Answer» C.
Discussion
5.

We first make equilibrium equations for the fluid pressure and then the free body diagram and then solve the question?

A. True
B. False
Answer» C.
Discussion
6.

What is not the condition for the equilibrium in the determination of the equations of the fluid pressures?

A. ∑Fx=0
B. ∑Fy=0
C. ∑Fz=0
D. ∑F≠0
Answer» E.
Discussion
7.

The system of the collinear and the parallel force for the calculations of the equations in the determination of the fluid pressure are simplified as ________________

A. The simplified collinear force system gives us a net force and the parallel force system gives us a simplified force, and then we add it vectorially
B. Such simplification is not possible
C. The simplification is usually done by not considering the directions of the both
D. The simplification is done by considering the rotations only
Answer» B. Such simplification is not possible
Discussion
8.

What is a collinear system of forces for the system of the fluid liquids?

A. The force system having all the forces parallel to each other
B. The force system having all the forces perpendicular to each other
C. The force system having all the forces emerging from a single point
D. Forces cannot form a collinear system of forces, it is not possible
Answer» D. Forces cannot form a collinear system of forces, it is not possible
Discussion
9.

For the determination of the fluid pressure the body to be experimented is ___________ in the liquid.

A. Immersed
B. Non-immersed
C. Parallel
D. Normal
Answer» B. Non-immersed
Discussion
10.

Pressure acts _____________ to the surface of the body.

A. Normal
B. Linear
C. Parallel
D. Coplanar
Answer» B. Linear
Discussion
11.

The Pascal’s law is applicable to the liquid which is __________________

A. Compressible
B. In-compressible
C. Solid in phase
D. Super-compressive
Answer» C. Solid in phase
Discussion
12.

Determine the location of the hydrostatic force acting on the submerged rectangular plate PaPb. Plate has a width of 1.5m. Density of water 1000kg/m3.

A. 1.29m
B. 0.29m
C. 0.9m
D. 1.9mView Answer
Answer» B. 0.29m
Discussion
13.

The Pascal law states that liquid at rest applies pressure at a point is ________ in all directions.

A. Same
B. Un-same
C. Not matching
D. Matching but not equal
Answer» B. Un-same
Discussion
14.

FOR_THE_DETERMINATION_OF_THE_FLUID_PRESSURE_THE_BODY_TO_BE_EXPERIMENTED_IS_____________IN_THE_LIQUID.?$

A. Immersed
B. Non-immersed
C. Parallel
D. Normal
Answer» B. Non-immersed
Discussion
15.

DEFINE_VISCOSITY??$

A. Resistance to flow of an object
B. Resistance to flow of air
C. Resistance to flow of fluid
D. Resistance to flow of heat
Answer» D. Resistance to flow of heat
Discussion
16.

The system of the collinear and the parallel force for the calculations of the equations in the determination of the fluid pressure are simplified as ________________$

A. The simplified collinear force system gives us a net force and the parallel force system gives us a simplified force, and then we add it vectorially
B. Such simplification is not possible
C. The simplification is usually done by not considering the directions of the both
D. The simplification is done by considering the rotations only
Answer» B. Such simplification is not possible
Discussion
17.

What_is_a_collinear_system_of_forces_for_the_system_of_the_fluid_liquids?$

A. The force system having all the forces parallel to each other
B. The force system having all the forces perpendicular to each other
C. The force system having all the forces emerging from a single point
D. Forces cannot form a collinear system of forces, it is not possible
Answer» E.
Discussion
18.

What_is_the_viscosity_of_water_at_30oC?$

A. 80.1
B. 0 .801
C. 801
D. 0.081
Answer» C. 801
Discussion
19.

When the body is in equilibrium beneath the liquid then which of the following is true?

A. We equate all the components of the forces acting on the body equal to their resultant vector’s magnitude
B. We equate all the components of the forces acting on the body equal to their resultant vector’s magnitude square
C. We equate all the components of the forces acting on the body equal to their resultant vector’s magnitude square root
D. We equate all the components of the forces acting on the body equal to zero
Answer» C. We equate all the components of the forces acting on the body equal to their resultant vector‚Äö√Ñ√∂‚àö√ë‚àö¬•s magnitude square root
Discussion
20.

If solving the question in 3D calculations is difficult, then use the 2D system to determine the equations of the fluid pressure.

A. True
B. False
Answer» C.
Discussion
21.

What_is_not_the_condition_for_the_equilibrium_in_the_determination_of_the_equations_of_the_fluid_pressures?

A. ‚àëFx=0
B. ‚àëFy=0
C. ‚àëFz=0
D. ∑F≠0
Answer» E.
Discussion
22.

Pressure acts _____________ to the surface of the body?

A. Normal
B. Linear
C. Parallel
D. Coplanar
Answer» D. Coplanar
Discussion
23.

What is the instrument used for the automatic control scheme during the fluid flow?

A. Rotameters
B. Pulley plates
C. Rotary Piston
D. Pilot Static Tube
Answer» E.
Discussion
24.

Gases are ________________ fluids.

A. Compressible
B. In-compressible
C. Solid in phase
D. Super-compressive
Answer» B. In-compressible
Discussion
25.

How do we measure the flow rate of liquid?

A. Coriolis method
B. Dead weight method
C. Conveyor method
D. Ionization method
Answer» B. Dead weight method
Discussion
26.

The Pascal’s law is applicable to the liquid which is __________________$

A. Compressible
B. In-compressible
C. Solid in phase
D. Super-compressive
Answer» B. In-compressible
Discussion
27.

Which among these devices are the best suited for the measurement of high pressure liquids with high accuracy?

A. Dead Weight Gauge
B. Vacuum Gauge
C. Manganin wire pressure
D. Ionization Gauge
Answer» D. Ionization Gauge
Discussion
28.

The magnitude of the pressure of the fluid is not dependent on the _________

A. Force
B. Area
C. Specific Weight
D. Temperature
Answer» B. Area
Discussion
29.

What type of liquids are measured using a manometer?

A. Heavy liquids
B. Medium Liquids
C. Light Liquids
D. Heavy and light liquids
Answer» D. Heavy and light liquids
Discussion
30.

29m

A. 0.29m
B. 0.9m
C. 1.9m
Answer» C. 1.9m
Discussion
31.

The device used to measure the fluid pressure is _____________

A. Hygrometer
B. Calorimeter
C. Manometer
D. Thermometer
Answer» D. Thermometer
Discussion
32.

The pressure at any given point of a non-moving fluid is called the ____________

A. Gauge Pressure
B. Atmospheric Pressure
C. Differential Pressure
D. Hydrostatic Pressure
Answer» E.
Discussion
33.

15 bar equals to __________ Pascals.

A. 10<sup>5</sup>Pa
B. 1.5 x 10<sup>6</sup> Pa
C. 100 Pa
D. 1000 Pa
Answer» C. 100 Pa
Discussion
34.

What is the pressure in Pascals at a depth of 1m below the water surface?

A. 98100 Pa
B. 980 Pa
C. 98 Pa
D. 1 Pa
Answer» B. 980 Pa
Discussion