MCQOPTIONS
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MCQOPTIONS
| 1. |
Which of the following expression is correct for radiation efficiency? |
| A. | ( eta_r = frac{P_r}{P_l} ) |
| B. | ( eta_r = frac{P_r}{P_r-P_l} ) |
| C. | ( eta_r = frac{P_r}{P_r+P_l} ) |
| D. | ( eta_r = frac{P_l}{P_r+P_l} ) |
| Answer» D. ( eta_r = frac{P_l}{P_r+P_l} ) | |