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The effectiveness of the hydro dynamic lubrication does not depends upon the ________

(a) Design of bearing

(b) Load

(c) Rate of rotation of shaft

(d) Area of shaft

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The correct answer is (d) Area of shaft

Explanation: The effectiveness of the hydro dynamic lubrication does not depends upon the area of the shaft. The effectiveness mainly depends upon the design of bearing, load and speed of the shaft rotating.

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