A small thermo-couple is positioned in a thermal boundary layer near a flat plate past which water flows at 30 degree Celsius and 0.15 m/s. The plate is heated to a surface temperature of 50 degree Celsius and at the location of the probe, the thickness of thermal boundary layer is 15 mm. If the temperature profile as measured by the probe is well-represented byt t S/t INFINITY t S = 1.5 (y/ t) 0.5 (y/ t) 3

nDetermine the heat flux from plate to water

A small thermo-couple is positioned in a thermal boundary layer near a flat plate past which water flows at 30 degree Celsius and 0.15 m/s. The plate is heated to a surface temperature of 50 degree Celsius and at the location of the probe, the thickness is 15 mm. The probe is well-represented byt t S/t INFINITY t S = 1.5 (y/ ) 0.5 (y/ ) 3

nDetermine the heat transfer coefficient

Explore topic-wise MCQs in Heat Transfer.

This section includes 5 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.	Ambient air at 20 degree Celsius flows past a flat plate with a sharp leading edge at 3 m/s. The plate is heated uniformly throughout its entire length and is maintained at a surface temperature of 40 degree Celsius. Calculate the local convective heat transfer coefficient. Assume that transition occurs at a critical Reynolds number of 500000
A.	4.519 k J/m<sup>2</sup> hr degree
B.	5.519 k J/m<sup>2</sup> hr degree
C.	6.519 k J/m<sup>2</sup> hr degree
D.	7.519 k J/m<sup>2</sup> hr degree
Answer» E.

Discussion

2.	Ambient air at 20 degree Celsius flows past a flat plate with a sharp leading edge at 3 m/s. The plate is heated uniformly throughout its entire length and is maintained at a surface temperature of 40 degree Celsius. Calculate the thickness of the thermal boundary layer. Assume that transition occurs at a critical Reynolds number of 500000
A.	19.23 mm
B.	18.23 mm
C.	17.23 mm
D.	16.23 mm
Answer» B. 18.23 mm

Discussion

3.	Ambient air at 20 degree Celsius flows past a flat plate with a sharp leading edge at 3 m/s. The plate is heated uniformly throughout its entire length and is maintained at a surface temperature of 40 degree Celsius. Calculate the thickness of the hydrodynamic boundary layer. Assume that transition occurs at a critical Reynolds number of 500000
A.	16.5 mm
B.	17.5 mm
C.	18.5 mm
D.	19.5 mm
Answer» C. 18.5 mm

Discussion

4.	A small thermo-couple is positioned in a thermal boundary layer near a flat plate past which water flows at 30 degree Celsius and 0.15 m/s. The plate is heated to a surface temperature of 50 degree Celsius and at the location of the probe, the thickness of thermal boundary layer is 15 mm. If the temperature profile as measured by the probe is well-represented by t t _S/t _INFINITY t _S = 1.5 (y/ _t) 0.5 (y/ _t) ³
A.	nDetermine the heat flux from plate to water
B.	266 W/m<sup>2</sup>
C.	1266 W/m<sup>2</sup>
D.	2266 W/m<sup>2</sup>
E.	3266 W/m<sup>2</sup>
Answer» C. 1266 W/m<sup>2</sup>

Discussion

5.	A small thermo-couple is positioned in a thermal boundary layer near a flat plate past which water flows at 30 degree Celsius and 0.15 m/s. The plate is heated to a surface temperature of 50 degree Celsius and at the location of the probe, the thickness is 15 mm. The probe is well-represented by t t _S/t _INFINITY t _S = 1.5 (y/ ) 0.5 (y/ ) ³
A.	nDetermine the heat transfer coefficient
B.	33.3 W/m<sup>2 </sup>K
C.	43.3 W/m<sup>2 </sup>K
D.	53.3 W/m<sup>2 </sup>K
E.	63.3 W/m<sup>2 </sup>K
Answer» E. 63.3 W/m<sup>2 </sup>K

Discussion