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APPLIED MECHANICS AND GRAPHIC STATICS

Applied Mechanics and Graphic Statics
The condilion for a lifting machine to be reversible is that its efficiency should be

equal to 100%
more than 66.67%
more than 50%
less than 50%

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Applied Mechanics and Graphic Statics
Coefficient of friction depends on

Area of contact only
Nature of surfaces only
Both (A) and (B)
None of these

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Applied Mechanics and Graphic Statics
The ratio of the speed of a rolling cylinder to the speed of sliding cylinder is

Between 1 and 2
Equal to 1
Greater than 2
Less than 1

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Applied Mechanics and Graphic Statics
A load of 500 kg was lifted through a distance of 13 cm. by an effort of 25 kg which moved through a distance of 650 cm. The mechanical advantage of the lifting machine is

15
18
20
26

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Applied Mechanics and Graphic Statics
A load of 500 kg was lifted through a distance of 13 cm. by an effort of 25 kg which moved through a distance of 650 cm. The velocity ratio of the lifting machine is

50
55
65
60

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