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Which of the decreases when the plunger is given an anticlockwise rotation?

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in Automotive Engine Design by (137k points)
Which of the decreases when the plunger is given an anticlockwise rotation?

(a) Compressed air

(b) Fuel-injected

(c) Coolant supply

(d) Lubricating oil

This question was addressed to me in an online quiz.

I need to ask this question from Fuel Injection Pump topic in section Diesel Engine Fuel Supply System of Automotive Engine Design

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Right option is (b) Fuel-injected

The explanation: When the plunger rotates in the anticlockwise direction the fuel injection per stroke decreases whereas when a clockwise rotation will delay the end of delivery, increasing the effective plunger stroke and consequently the fuel supply injected.

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