The case-to-ambient thermal resistance of a power transistor that has a maximum power rating of 15 W is given to be 25°C/W. If the case temperature of the transistor is not to exceed 80°C, mark the power at which this transistor can be operated safely in an environment at 40°C.. a)Between 1.0 to 1.5 W b)Between 1.5 to 2.0 W c)Between 2.0 to 2.5 W

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.
Chapter1: Basic Modes Of Heat Transfer
Section: Chapter Questions
Problem 1.74P: A manufacturer in the United States wants to sell a refrigeration system to a customer in Germany....
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The case-to-ambient thermal resistance of a power transistor that has a maximum power rating of 15 W is given to be 25°C/W. If the case temperature of the transistor is not to exceed 80°C, mark the power at which this transistor can be operated safely in an environment at 40°C..
a)Between 1.0 to 1.5 W
b)Between 1.5 to 2.0 W
c)Between 2.0 to 2.5 W
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