Helium gas is to be heated steadily by a 3-kW (3-kJ/s) electric resistance heater as it flows through an insulated duct. If the helium enters at 50?C at a rate of 0.08 kg/s, the exit temperature of helium will be which of the following. Note, for helium the specific heat at constant pressure is: | R %3D O 62.0 C O71.9 C O 57.2 C 112.0 C 50.6 C

Helium gas is to be heated steadily by a 3-kW (3-kJ/s) electric resistance heater as it flows through an insulated duct. If the helium enters at 50?C at a rate of 0.08 kg/s, the exit temperature of helium will be which of the following. Note, for helium the specific heat at constant pressure is: | R %3D O 62.0 C O71.9 C O 57.2 C 112.0 C 50.6 C

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Question

**Problem Statement:**

Helium gas is to be heated steadily by a 3-kW (3-kJ/s) electric resistance heater as it flows through an insulated duct. If the helium enters at 50°C at a rate of 0.08 kg/s, the exit temperature of helium will be which of the following. Note, for helium the specific heat at constant pressure is:

\[ \frac{{c_p}}{R} = \frac{5}{2} \]

**Answer Options:**

- 62.0 °C
- 71.9 °C
- 57.2 °C
- 112.0 °C
- 50.6 °C

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