In transient heat conduction, the two significant dimensionless parameters are

Reynolds number and Fourier number

Reynolds number and Biot number

Reynolds number and Prandtl number

Explore topic-wise MCQs in Heat Transfer.

This section includes 7 Mcqs, each offering curated multiple-choice questions to sharpen your Heat Transfer knowledge and support exam preparation. Choose a topic below to get started.

1.	A solid which extend itself infinitely in all directions of space is termed as finite solid.
A.	True
B.	False
Answer» C.

Discussion

2.	Consider the above problem, calculate the temperature of the surface at this instant
A.	476.4 degree Celsius
B.	453.5 degree Celsius
C.	578.9 degree Celsius
D.	548.6 degree Celsius
Answer» D. 548.6 degree Celsius

Discussion

3.	In transient heat conduction, the two significant dimensionless parameters are
A.	Reynolds number and Fourier number
B.	Reynolds number and Biot number
C.	Reynolds number and Prandtl number
D.	Biot number and Fourier number
Answer» E.

Discussion

4.	When Biot number exceeds 0.1 but is less than 100, use is made of Heislers charts for the solution of transient heat conduction.
A.	True
B.	False
Answer» B. False

Discussion

5.	With respect to above problem, determine the temperature inside the plate 12.5 mm from the mid plane after 3 minutes
A.	272.36 degree Celsius
B.	262.36 degree Celsius
C.	252.36 degree Celsius
D.	22.35 degree Celsius
Answer» B. 262.36 degree Celsius

Discussion

6.	A large steel plate 50 mm thick is initially at a uniform temperature of 425 degree Celsius. It is suddenly exposed on both sides to an environment with convective coefficient 285 W/m² K and temperature 65 degree Celsius. Determine the center line temperature. For steel, thermal conductivity = 42.5 W/m K and thermal diffusivity = 0.043 m²/hr
A.	261 degree Celsius
B.	271 degree Celsius
C.	281 degree Celsius
D.	291 degree Celsius
Answer» D. 291 degree Celsius

Discussion

7.	The value of Biot number and Fourier number, as used in the Heisler charts, are evacuated on the basis of a characteristics parameter s which is the thickness in case of plates and the surface radius in case of cylinders and spheres.
A.	True
B.	False
Answer» C.

Discussion

Explore topic-wise MCQs in Heat Transfer.

A solid which extend itself infinitely in all directions of space is termed as finite solid.

Consider the above problem, calculate the temperature of the surface at this instant

In transient heat conduction, the two significant dimensionless parameters are

When Biot number exceeds 0.1 but is less than 100, use is made of Heislers charts for the solution of transient heat conduction.

With respect to above problem, determine the temperature inside the plate 12.5 mm from the mid plane after 3 minutes

The value of Biot number and Fourier number, as used in the Heisler charts, are evacuated on the basis of a characteristics parameter s which is the thickness in case of plates and the surface radius in case of cylinders and spheres.