The interference in involute spur gears will increase when
A
The number of teeth on the pinion are reduced
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B
The module is increased
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C
The pressure angle is increased
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D
The centre distance is increased
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Solution
The correct option is A The number of teeth on the pinion are reduced When the number of teeth is reduced, addendum radius will increase so, the top land of the gear easily reaches the flank of the pinion. Hence interference will increase.