Explore topic-wise MCQs in UPSEE.

This section includes 23 Mcqs, each offering curated multiple-choice questions to sharpen your UPSEE knowledge and support exam preparation. Choose a topic below to get started.

1.

Which of the following sentences are true for Bernoulli's equation?

1. Bernoulli's principle is applicable to ideal incompressible fluid
2. The gravity force and pressure forces are only considered in Bernoulli's principle
3. The flow of fluid is rotational for Bernoulli's principle
4. The heat transfer into or out of fluid should be zero to apply Bernoulli's principle 
A. (1), (2) and (3)
B. (1), (3) and (4)
C. (1), (2) and (4)
D. (1), (2), (3) and (4)
Answer» D. (1), (2), (3) and (4)
Discussion
2.

Which of the following devices does not use Bernoulli's equation as its working principle?
A. Venturimeter
B. Orifice-meter
C. Pitot tube
D. None of the above
Answer» E.
Discussion
3.

The cylindrical portion of short length, which connects converging and diverging section of venturimeter, is called as 
A. diffuser
B. connector
C. throat
D. manometer tube
Answer» D. manometer tube
Discussion
4.

Shear stress in a turbulent flow is given by the formula 

τ = η (du / dy)

Where η (eta) is, 
A. eddy viscosity
B. apparent viscosity
C. virtual viscosity
D. all of the above
Answer» E.
Discussion
5.

Magnitude of eddy viscosity for laminar flow is 
A. less than zero
B. zero
C. greater than zero
D. unpredictable
Answer» C. greater than zero
Discussion
6.

Kinematic eddy viscosity (ε) is the ratio of 
A. eddy viscosity (η) to dynamic viscosity (μ)
B. eddy viscosity (η) to kinematic viscosity (ν)
C. kinematic viscosity to eddy viscosity (η)
D. eddy viscosity (η) to mass density (ρ)
Answer» E.
Discussion
7.

Friction factor for laminar flow is given by 
A. (Re /64)
B. (64 / Re)
C. (Re / 16)
D. (16 / Re)
Answer» B. (64 / Re)
Discussion
8.

What is temporal mean velocity? 
A. The average of velocities at a point over a certain period of time
B. The average of velocities of a single particle over different locations in a fluid flow
C. None of the above
Answer» B. The average of velocities of a single particle over different locations in a fluid flow
Discussion
9.

The friction factor in fluid flowing through pipe depends upon 
A. Reynolds number
B. relative roughness of pipe surface
C. both a. and b.
D. none of the above
Answer» D. none of the above
Discussion
10.

What is the effect of change in Reynold's number on friction factor in turbulent flow?
A. As the Reynolds number increases the friction factor increases in turbulent flow
B. As the Reynolds number increases the friction factor decreases in turbulent flow
C. change in Reynolds number does not affect the friction factor in turbulent flow
D. unpredictable
Answer» B. As the Reynolds number increases the friction factor decreases in turbulent flow
Discussion
11.

What is a syphon? 
A. A long bend pipe used to carry water from a reservoir at a higher level to another reservoir at a lower level when two reservoirs are separated by a hill
B. A long bend pipe used to carry water from a reservoir at a lower level to another reservoir at a higher level with some work input when two reservoirs are separated by a hill
C. A long bend pipe used to carry water from one reservoir to another reservoir when two reservoirs are at same elevation
D. Unpredictable
Answer» B. A long bend pipe used to carry water from a reservoir at a lower level to another reservoir at a higher level with some work input when two reservoirs are separated by a hill
Discussion
12.

The highest point of syphon is called as 
A. syphon top
B. summit
C. reservoir
D. none of the above
Answer» C. reservoir
Discussion
13.

 Which of the following is a dimensionless equation? 
A. Reynolds equation
B. Eulers equation
C. Webers equation
D. All of the above
Answer» E.
Discussion
14.

Which of the following number is applicable in open hydraulic structure such as spillways, where gravitational force is predominant? 
A. Reynolds Number
B. Eulers Number
C. Webers Number
D. Froudes Number
Answer» E.
Discussion
15.

Square root of the ratio of inertia force to elastic force is called as 
A. Machs Number
B. Cauchys Number
C. Both a. and b.
D. None of the above
Answer» D. None of the above
Discussion
16.

Boundary layer thickness is the distance from the boundary to the point where velocity of the fluid is 
A. equal to 10% of free stream velocity
B. equal to 50% of free stream velocity
C. equal to 90% of free stream velocity
D. equal to 99% of free stream velocity
Answer» E.
Discussion
17.

The component of the total force exerted by fluid on a body in the direction parallel to the direction of motion is called as 
A. lift
B. drag
C. both a. and b.
D. none of the above
Answer» C. both a. and b.
Discussion
18.

The sum of components of shear forces in the direction of flow of fluid is called as 
A. shear drag
B. friction drag
C. skin drag
D. all of the above
Answer» E.
Discussion
19.

 The body whose surface does not coincide with the streamline when places in a flow is called as
A. streamline body
B. wave body
C. bluff body
D. induced body
Answer» D. induced body
Discussion
20.

 Which type of body is an airfoil? 
A. streamline body
B. wave body
C. bluff body
D. induced body
Answer» B. wave body
Discussion
21.

Bulk modulus is the ratio of 
A. shear stress to volumetric strain
B. volumetric strain to shear stress
C. compressive stress to volumetric strain
D. volumetric strain to compressive stress
Answer» D. volumetric strain to compressive stress
Discussion
22.

When is a liquid said to be not in a boiling or vaporized state? 
A. If the pressure on liquid is equal to its vapour pressure
B. If the pressure on liquid is less than its vapour pressure
C. If the pressure on liquid is more than its vapour pressure
D. Unpredictable
Answer» D. Unpredictable
Discussion
23.

According to Archimede's principle, if a body is immersed partially or fully in a fluid then the buoyancy force is _______ the weight of fluid displaced by the body. 
A. equal to
B. less than
C. more than
D. unpredictable
Answer» B. less than
Discussion