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1. |
Air at 20°C blows over a plate of 50 cm × 75 cm maintained at 250°C. If the convection heat transfer coefficient is 25 W/m2°C, the heat transfer rate is |
A. | 2.156 kW |
B. | 2156 kW |
C. | 215.6 kW |
D. | 21.56 kW |
Answer» B. 2156 kW | |