A) 20%
B) 25%
C) 80%
D) 90%.
Correct Answer: C
Solution :
Efficiency of hydraulic coupling \[\cos \alpha =\frac{1}{2},\] \[\alpha =60{}^\circ \] \[\frac{{{N}_{2}}}{{{N}_{2}}}=\frac{720}{900}=0.8\,\,or\,\,80%\]You need to login to perform this action.
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