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Engineering Mechanics

Engineering Mechanics
A screw jack used for lifting the loads is

A reversible machine
A non-reversible machine
None of these
An ideal machine

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Engineering Mechanics
In a single threaded worm and worm wheel, the number of teeth on the worm is 50. The diameter of the effort wheel is 100 mm and that of load drum is 50 mm. The velocity ratio is

200
400
100
50

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Engineering Mechanics
Coefficient of friction depends upon

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

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Engineering Mechanics
Center of gravity of a thin hollow cone lies on the axis at a height of

One-fourth of the total height above base
One-third of the total height above base
Three-eighth of the total height above the base
One-half of the total height above base

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Engineering Mechanics
The force required to move the body up the plane will be minimum if it makes an angle with the inclined plane __________ the angle of friction.

None of these
Less than
Greater than
Equal to

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Engineering Mechanics
The motion of a wheel of a car is

Purely rotational
Purely translation
None of the listed here
Combined translation and rotational

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MORE MCQ ON Engineering Mechanics

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