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1. |
Air is flowing over a hot plate at a temperature of 120 °C. If at a point Reynold number is increased by 4 times and Nusselt number is increased by 2 times, then the new value of Prandtl number will be: |
A. | 2 times |
B. | 4/9 times |
C. | 1/2 times |
D. | same |
Answer» E. | |