1.

If in case of disc clutch,\[{{N}_{1}}\]= Number of discs on driving shaft \[{{N}_{2}}\]= Number of discs on driving shaft then, number of pairs of contact surfaces will be:

A. \[{{N}_{1}}-{{N}_{2}}+1\]
B. \[{{N}_{1}}-{{N}_{2}}-1\]
C. \[{{N}_{1}}+{{N}_{2}}+1\]
D. \[{{N}_{1}}+{{N}_{2}}-1\]
Answer» E.


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