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A bimetallic ________ is generally utilized to measure stagnation temperature

(a) Transistor

(b) Thermometer

(c) Diode

(d) Thermocouple

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I would like to ask this question from Stagnation Properties in portion Compressible Flow of Fluid Mechanics

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Right choice is (d) Thermocouple

Easy explanation: A bimetallic thermocouple is generally utilized to measure stagnation temperature. However, there must be allowances for thermal radiation. This is done in order to avoid the occurrence of errors.

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