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ENGINEERING A plane wall of a furnace is fabricated from plain carbon steel $\left(k=60 \mathrm{W} / \mathrm{m} \cdot \mathrm{K}, \rho=7850 \mathrm{kg} / \mathrm{m}^{3}, c=430 \mathrm{J} / \mathrm{kg} \cdot \mathrm{K}\right)$ and is of thickness L=10mm. To protect it from the corrosive effects of the furnace combustion gases, one surface of the wall is coated with a thin ceramic film that, for a unit surface area, has a thermal resistance of $R_{t, f}^{\prime \prime}=0.01 \mathrm{m}^{2} \cdot \mathrm{K} / \mathrm{W}$. The opposite surface is well insulated from the surroundings. At furnace start-up the wall is at an initial temperature of $T_{i}=300 \mathrm{K}$, and combustion gases at $T_{\infty}=1300 \mathrm{K}$ enter the furnace, providing a convection coefficient of $h=25 \mathrm{W} / \mathrm{m}^{2} \cdot \mathrm{K}$ at the ceramic film. Assuming the film to have negligible thermal capacitance, how long will it take for the inner surface of the steel to achieve a temperature of $T_{s, i}=1200 \mathrm{K}$? What is the temperature $T_{s, o}$ of the exposed surface of the ceramic film at this time? Verified answer
ENGINEERING Verified answer
ENGINEERING Verified answer
ENGINEERING Verified answer Other Quizlet setsRelated questionsWhat provides new employees with the basic background information required to perform their jobs satisfactorily?Orientation means providing new employees with basic information about the employer. Training programs are used to ensure that the new employee has the basic knowledge required to perform the job satisfactorily.
What is a procedure for providing new employees with basic background information about the firm?According to Gary Dessler, “Employee orientation is a procedure for providing new employees with basic background information about the firm.”. According to Biswanath Ghosh, “Employee orientation is the process by which new employees are introduced to the organization's practices, policies, and purposes.”
Which of the following terms refers to the methods used to give new or present employees the skills they need to perform their jobs?8) The methods used to give new or present employees the skills they need to perform their jobs are called ________. A) orientation B) training C) development D) management Answer: B Explanation: B) Training means giving new or current employees the skills they need to perform their jobs.
Which one of the following terms refers to helping new employees appreciate the values and culture of a firm?Answer and Explanation: The correct option is A) onboarding . Onboarding is a process to integrate a newly joined employee into the organization.
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Which of the following provides new employees with the basic background information they need to do their jobs?
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