CUET-PG SERIES Mechanical-engineering
Heat Transfer
8 previous year questions.
Volume: 8 Ques
Yield: Medium
High-Yield Trend
4
2025 4
2024 Chapter Questions 8 MCQs
01
PYQ 2024
medium
mechanical-engineering ID: cuet-pg-
Given below are two statements:
Statement (I): The heat transfer coefficient for air in free convection varies between 5 to 30 W/m2·K.
Statement (II): The heat transfer coefficient of steam during condensation lies between 5000 to 110000 W/m2·K.
In light of the above statements, choose the most appropriate answer from the options given below.
Statement (I): The heat transfer coefficient for air in free convection varies between 5 to 30 W/m2·K.
Statement (II): The heat transfer coefficient of steam during condensation lies between 5000 to 110000 W/m2·K.
In light of the above statements, choose the most appropriate answer from the options given below.
1
Both Statement (I) and Statement (II) are correct
2
Both Statement (I) and Statement (II) are incorrect.
3
Statement (I) is correct but Statement (II) is incorrect.
4
Statement (I) is incorrect but Statement (II) is correct.
02
PYQ 2024
medium
mechanical-engineering ID: cuet-pg-
The shape factor of a hemispherical body placed on a flat surface with respect to itself is
1
1.00
2
0.25
3
0.50
4
0
03
PYQ 2024
medium
mechanical-engineering ID: cuet-pg-
Match List I (Non-Dimensional Number) with List II (Formula):
Choose the correct answer from the options given below.
| LIST I | LIST II |
| A. Nusselt Number | I. (where is thermal conductivity of fluid) |
| B. Biot Number | II. (where is thermal conductivity of solid) |
| C. Prandtl Number | III. |
| D. Stanton Number | IV. (where is thermal conductivity of fluid) |
1
(A)- (I), (B)- (II), (C)- (III), (D)- (IV)
2
(A)- (IV), (B)- (II), (C)- (I), (D)- (III)
3
(A)- (I), (B)- (II), (C)- (IV), (D)- (III)
4
(A)- (III), (B)- (IV), (C)- (I), (D)- (II)
04
PYQ 2024
medium
mechanical-engineering ID: cuet-pg-
Lumped Heat capacity analysis can be applied to a system when
1
Convective resistance is very small and conductive resistance is very large
2
Both convective and conductive resistances are very large
3
Both convective and conductive resistances are very small
4
Convective resistance is very large and conductive resistance is very small
05
PYQ 2025
medium
mechanical-engineering ID: cuet-pg-
For an insulated tip, the fin efficiency is given by
1
2
3
4
06
PYQ 2025
medium
mechanical-engineering ID: cuet-pg-
After expansion from a gas turbine, the hot exhaust gases are used to heat the compressed air from a compressor with the help of a cross-flow compact heat exchanger of 0.8 effectiveness. What is the number of transfer units of the heat exchanger?
1
2
2
4
3
6
4
8
07
PYQ 2025
medium
mechanical-engineering ID: cuet-pg-
In which one of the following materials the heat energy propagation is minimum due to conduction heat transfer?
1
Lead
2
Copper
3
Water
4
Air
08
PYQ 2025
medium
mechanical-engineering ID: cuet-pg-
The Nusselt number is related to the Reynolds number in laminar and turbulent flows respectively as:
1
and
2
and
3
and
4
and