MCQ
Knocking sound occurs in engine when fuel
- AIgnites slowly
- ✓Ignites rapidly
- CContains water
- DIs mixed with machine oil
✓
Answer
Correct option: B.
Ignites rapidly
b
(b)Knocking - Sudden and irregular burning of the fuel mixture causing jerks against the piston and gives rise to violent sound. This is known as knocking.
(b)Knocking - Sudden and irregular burning of the fuel mixture causing jerks against the piston and gives rise to violent sound. This is known as knocking.
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