MCQ
Coefficient of performance for heat pump is (when heat supplied by system is Q1):
- A$\alpha=\frac{\text{Q}_2}{\text{W}}$
- B$\alpha=\frac{\text{Q}_1}{\text{W}}$
- C$\alpha=\frac{\text{Q}_1}{\text{Q}_2}$
- D$\alpha=\frac{\text{Q}_2}{\text{Q}_1}$
$\alpha=\frac{\text{Q}_2}{\text{W}}$
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| Column $-I$ $R/H_{max}$ |
Column $-II$ Angle of projection $\theta $ |
| $A.$ $1$ | $1.$ ${60^o}$ |
| $B.$ $4$ | $2.$ ${30^o}$ |
| $C.$ $4\sqrt 3$ | $3.$ ${45^o}$ |
| $D.$ $\frac {4}{\sqrt 3}$ | $4.$ $tan^{-1}\,4\,=\,{76^o}$ |