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ESE Mechanical 2014 Official Paper - 1

- 1702.9 kW
- 1800.7 kW
- 54.4 kW
- 2832.1 kW

Option 1 : 1702.9 kW

Free

CT 3: Building Materials

2962

10 Questions
20 Marks
12 Mins

__Concept:__

Q = ϵσAT^{4}

Here A = surface area

∴ Surface area of cube = 6 × (side)^{2}

__Calculation:__

**Given:**

Side of cube = 10 m, T = 200° C = 473 K

**Now,**

Q = ϵσAT^{4}

∴ Q = 1 × 5.67 × 10^{-8} × 6 × (10^{2}) × (473)^{4}

**∴ Q = 1702 kW **

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