b) A 0.4-W cylindrical electronic component shown in Figure Q3b with diameter 0.3 cm and length 1.8 cm is mounted on a circuit board is cooled by air flowing across it at a velocity of 150 m/min and temperature is 40 °C. Take the pressure of air 1 atm and the film temperature to be 50 °C, determine the surface temperature of the component. Resistor 0.4 W D = 0.3 em Figure Q3b
b) A 0.4-W cylindrical electronic component shown in Figure Q3b with diameter 0.3 cm and length 1.8 cm is mounted on a circuit board is cooled by air flowing across it at a velocity of 150 m/min and temperature is 40 °C. Take the pressure of air 1 atm and the film temperature to be 50 °C, determine the surface temperature of the component. Resistor 0.4 W D = 0.3 em Figure Q3b
Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)
8th Edition
ISBN:9781305387102
Author:Kreith, Frank; Manglik, Raj M.
Publisher:Kreith, Frank; Manglik, Raj M.
Chapter6: Forced Convection Over Exterior Surfaces
Section: Chapter Questions
Problem 6.22P
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![b) A 0.4-W cylindrical electronic component shown in Figure Q3b with diameter 0.3 cm and length
1.8 cm is mounted on a circuit board is cooled by air flowing across it at a velocity of 150 m/min
and temperature is 40 °C. Take the pressure of air 1 atm and the film temperature to be 50 °C,
determine the surface temperature of the component.
Resistor
0.4 W
D= 0.3 cm
Figure Q3b](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F76b05deb-72e3-4cf3-97d6-17e59a0fdc00%2F542048f6-6ce8-4bb7-be20-e810ff092165%2Fb0fh1za_processed.jpeg&w=3840&q=75)
Transcribed Image Text:b) A 0.4-W cylindrical electronic component shown in Figure Q3b with diameter 0.3 cm and length
1.8 cm is mounted on a circuit board is cooled by air flowing across it at a velocity of 150 m/min
and temperature is 40 °C. Take the pressure of air 1 atm and the film temperature to be 50 °C,
determine the surface temperature of the component.
Resistor
0.4 W
D= 0.3 cm
Figure Q3b
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