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An electronic circuit contains a power resistor that dissipates 1.5 W The designer wants to modify the circuitry in such a way that it will be necessary for the resistor to dissipate

An electronic circuit contains a power resistor that dissipates 1.5 W. The designer wants to modify the circuitry in such a way that it will be necessary for the resistor to dissipate 2.5 W. The resistor is in the shape of a disk 1 cm in diameter and 0.6 mm thick lis t surface is aligned with a cooling air flow at 30°C and 10 m/s TO vclocity The resistor lifetime becomes unacceptable if its surface temperature exceeds 0 Is it necessary to replace the resistor for the new circuit? Assumption Search state Radiation in ligile or dry air of the m temperature of 60°C: 0.0279 Wmkv 19.4x10° PY071). 

Aug 20 2020 View more View Less

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