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Question
Which of the following would prevent a machine from wear and tear?
Which of the following would prevent a machine from wear and tear?
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Solution
The correct option is B
Option A - Cleaning a knife, this keeps the knife nice and clean.
Option B - Painting a metal rod, this prevents the rods from rusting.
Option C - Oiling the gears, this reduces the friction between the gears and reduce wear and tear of the gears.
Option D - Bicycle in rain, this causes different parts of the bicycle which are metal to be rusted.
Option A - Cleaning a knife, this keeps the knife nice and clean.
Option B - Painting a metal rod, this prevents the rods from rusting.
Option C - Oiling the gears, this reduces the friction between the gears and reduce wear and tear of the gears.
Option D - Bicycle in rain, this causes different parts of the bicycle which are metal to be rusted.
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