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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

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

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Applied Mechanics and Graphic Statics
The Centre of gravity of a 10 × 15 × 5 cm T section from its bottom, is

5.0 cm
8.75 cm
7.85 cm
7.5 cm

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Applied Mechanics and Graphic Statics
If the resultant of two forces has the same magnitude as either of the force, then the angle between the two forces is

60°
45°
120°
30°

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Applied Mechanics and Graphic Statics
A rod 5 m in length is moving in a vertical plane. When it is inclined at 60° to horizontal, its lower end is moving horizontally at 3 m/sec and upper end is moving in vertical direction. The velocity of its upper end, is

2.5 m/sec
0.5 m/sec
1.5 m/sec
1.0 m/sec

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Applied Mechanics and Graphic Statics
A solid cylinder of mass M and radius R rolls down an inclined plane without slipping. The acceleration of center of mass of rolling cylinder is (where ‘g’ is acceleration due to gravity and 0 is inclination of plane with horizontal.)

g sin 9
(1/3) g sinB
(2/3) g cos 9
(2/3) g sin 0

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Applied Mechanics and Graphic Statics
Engineer's units of force, is

Dyne in absolute units
All listed here
Newton and dyne in absolute units
Newton in absolute units

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