A Sphere of Radius 40 Cm Is Lagged to a Radius

question 44

Multiple Choice

A sphere of radius 40 cm is lagged to a radius of 50 cm. The temperatures of outer and inner surfaces are 66°C and 235°C respectively. Thermal conductivity of logging per cm thickness is 0.7 kcal/m-hr°C. The rate of heat leakage will be

• A)500 kcal/hr
• B)1.49 kcal/hr
• C)666 kcal/hr
• D)298 kcal/hr
• E)398 kcal/hr

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Definitions:

Joint Stock Company

A partnership agreement in which company members hold transferable shares, whereas all the goods of the company are held in the names of the partners.

Partnership Agreement

A legal document that specifies the rights, responsibilities, and profit and loss distribution among business partners.

Transferable Shares

Shares of a company's stock that can be sold or transferred by the shareholder to another party without restrictions.

Partners

Individuals or entities engaged in business together under a formal agreement to share profits and losses.