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GATE 2015 EE - SET 2 - Question 41

Solution :

GMR = KR
GMR = \left [ (D_{11}D_{12}D_{13}) (D_{21}D_{22}D_{23})(D_{31}D_{32}D_{33})\right ]^{\frac{1}{m*n}}

GMR = KR
GMR = \left [ (3R*r*0.7788R)^{3}\right ]^{\frac{1}{3*3}}
\rightarrow \left [ (0.7788*9*R^{3})^{3} \right ]^{\frac{1}{9}}
\Rightarrow 1.914R

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