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Applied Mechanics and Graphic Statics

Applied Mechanics and Graphic Statics
The force polygon representing a set of forces in equilibrium is a

Closed polygon
Parallelogram
Triangle
Open polygon

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Applied Mechanics and Graphic Statics
In a lifting machine a weight of 5 kN is lifted through 200 mm by an effort of 0.1 kN moving through 15 m. The mechanical advantage and velocity ratio of the machine are respectively

50 and 75
50 and 50
75 and 50
75 and 75

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Applied Mechanics and Graphic Statics
A bullet weighing 200 g is fired horizontally with a velocity of 25 m/sec from a gun carried on a carriage which together with the gun weighs 100 kg. The velocity of recoil of the gun, will be

0.05 m/sec
1.5 m/see
1.00 m/sec
0.01 m/sec

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Applied Mechanics and Graphic Statics
A Second's pendulum gains 2 minutes a day. To make it to keep correct time its length

Is not changed but weight of the bob is decreased
Must be decreased
Is not changed but weight of the bob is increased
Must be increased

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Applied Mechanics and Graphic Statics
Pick up the correct statement from the following. The kinetic energy of a body

Remain constant
Before impact is less than that after impact
Before impact is more than that after impact
Before impact is equal to that after impact

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Applied Mechanics and Graphic Statics
Pick up the incorrect statement from the following. In case of suspension bridge due to rise in temperature,

Dip of the cable increases
Dip of the cable decreases
None of these
Length of the cable increases

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