Heisler charts are valid if

Fourier number is less than 0.2

Fourier number is greater than 0.2

The following data pertains to the junction of a thermocouple wire used to measure the temperature of the gas stream.Density = 8500 kg/m3, specific heat = 325 J/kg K, thermal conductivity = 40 W/m K and the heat transfer coefficient between the junction and gas = 215 W/m2 K.

nIf thermocouple junction can be approximated as 1 mm diameter sphere, determine how long it will take for the thermocouple to read 99% of the initial temperature difference

Explore topic-wise MCQs in Heat Transfer.

This section includes 4 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.	Heisler charts are valid if
A.	Fourier number is equal to 0.2
B.	Fourier number is less than 0.2
C.	Fourier number is greater than 0.2
D.	Fourier number is equal to 0.4
Answer» D. Fourier number is equal to 0.4

Discussion

2.	What percentage of water an average human body can have?
A.	52%
B.	62%
C.	72%
D.	82%
Answer» D. 82%

Discussion

3.	The following data pertains to the junction of a thermocouple wire used to measure the temperature of the gas stream. Density = 8500 kg/m³, specific heat = 325 J/kg K, thermal conductivity = 40 W/m K and the heat transfer coefficient between the junction and gas = 215 W/m²K.
A.	nIf thermocouple junction can be approximated as 1 mm diameter sphere, determine how long it will take for the thermocouple to read 99% of the initial temperature difference
B.	9.86 seconds
C.	8.86 seconds
D.	7.86 seconds
E.	6.86 seconds
Answer» B. 9.86 seconds

Discussion

4.	The response of a thermocouple is defined as the time required for the thermocouple to reach the surrounding temperature when it is exposed to it .
A.	True
B.	False
Answer» C.

Discussion

Explore topic-wise MCQs in Heat Transfer.

Heisler charts are valid if

What percentage of water an average human body can have?

The following data pertains to the junction of a thermocouple wire used to measure the temperature of the gas stream.Density = 8500 kg/m3, specific heat = 325 J/kg K, thermal conductivity = 40 W/m K and the heat transfer coefficient between the junction and gas = 215 W/m2 K.

The response of a thermocouple is defined as the time required for the thermocouple to reach the surrounding temperature when it is exposed to it .

The following data pertains to the junction of a thermocouple wire used to measure the temperature of the gas stream.
Density = 8500 kg/m³, specific heat = 325 J/kg K, thermal conductivity = 40 W/m K and the heat transfer coefficient between the junction and gas = 215 W/m²K.