CUET-PG SERIES Chemical-thermal-and-polymer-engineering
Fluid Mechanics
13 previous year questions.
Volume: 13 Ques
Yield: Medium
High-Yield Trend
4
2025 9
2024 Chapter Questions 13 MCQs
01
PYQ 2024
medium
chemical-thermal-and-polymer-engineering ID: cuet-pg-
In a flow-nozzle type flow meter, the contraction is noticed to be:
A. gradual
B. abrupt
C. no change
D. discrete
A. gradual
B. abrupt
C. no change
D. discrete
1
A, B
2
C
3
D
4
C, D
02
PYQ 2024
medium
chemical-thermal-and-polymer-engineering ID: cuet-pg-
In a mixing tank operating at a very high Reynolds number 104, if the diameter of the im peller is doubled, keeping other conditions constant, the power required increases by a factor of:
1
2
3
4
4
32
03
PYQ 2024
medium
chemical-thermal-and-polymer-engineering ID: cuet-pg-
Rain drops fall from a great height under gravity. Select the correct statement:
1
Their velocities go on increasing until they hit the earth with the same velocity
2
Their velocities go on increasing as they hit the earth, but final velocities of different drops are different
3
They fall with a terminal velocity which is the same for every drop
4
They fall with terminal velocities which are different for drops of different size
04
PYQ 2024
medium
chemical-thermal-and-polymer-engineering ID: cuet-pg-
Bernoulli’s equation cannot be applied when the flow is:
1
Rotational
2
Turbulent
3
Unsteady
4
Smooth
05
PYQ 2024
medium
chemical-thermal-and-polymer-engineering ID: cuet-pg-
A pressure of applied to of liquid results in a volume change of . The bulk modulus in MPa is:
1
2.5
2
25
3
250
4
2500
06
PYQ 2024
medium
chemical-thermal-and-polymer-engineering ID: cuet-pg-
Crude oil of kinematic viscosity 2.25 Stokes flows through a 20 cm diameter pipe. If the rate of flow is 1.5 liters/sec, what will be the type of flow?
1
Laminar
2
Turbulent
3
Transition
4
Rotational
07
PYQ 2024
medium
chemical-thermal-and-polymer-engineering ID: cuet-pg-
Arrange the following flow measuring devices in the increasing order of head loss caused by them:
(A). Flow nozzle
(B). Venturimeter
(C). Orifice meter
(A). Flow nozzle
(B). Venturimeter
(C). Orifice meter
1
A, B, C
2
C, A, B
3
B, C, A
4
A, C, B
08
PYQ 2024
medium
chemical-thermal-and-polymer-engineering ID: cuet-pg-
In order that the water shall never rise more than 100 cm above the crest for a discharge of 5 cubic meters per second, the length of the wire will be:
1
1 meter
2
2.5 meters
3
2.49 meters
4
2.51 meters
09
PYQ 2024
medium
chemical-thermal-and-polymer-engineering ID: cuet-pg-
The liquid phases considered under Navier-Stokes equations are
1
Gravity, pressure, and viscous
2
Gravity, pressure, and behavior
3
Viscous, pressure, and turbulent
4
Gravity, viscous, and solution
10
PYQ 2025
medium
chemical-thermal-and-polymer-engineering ID: cuet-pg-
The liquid used in hydraulic transmission is:
1
oil
2
water
3
steam
4
any volatile liquid
11
PYQ 2025
easy
chemical-thermal-and-polymer-engineering ID: cuet-pg-
A rigid spherical particle is undergoing free settling in a liquid of density 750 , viscosity . Particle density is four times the liquid density. Taking the acceleration due to gravity as and assuming Stokes' law is valid, the terminal settling velocity of the particle in is:
12
PYQ 2025
easy
chemical-thermal-and-polymer-engineering ID: cuet-pg-
In the laminar boundary layer over a flat plate, the ratio of varies as (Where, is Reynolds number). The value of is:
13
PYQ 2025
easy
chemical-thermal-and-polymer-engineering ID: cuet-pg-
A pipe with diameter 25 cm at the entrance carries oil with specific gravity 0.9 at a velocity of 3 m/s. At the exit section the diameter of the pipe is 20 cm. The velocity at the exit section is: