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Applied Mechanics and Graphic Statics

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 50
75 and 75
75 and 50
50 and 75

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Applied Mechanics and Graphic Statics
In which of the following trusses, the method of substitution is required for determining the forces in all the members of the truss by graphic statics?

King post truss
Howe truss
Warren truss
Fink truss

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Applied Mechanics and Graphic Statics
The practical units of work, is

Joule
Newton
Erg
Dyne

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Applied Mechanics and Graphic Statics
On a ladder resisting on a smooth ground and leaning against a rough vertical wall, the force of friction acts

Away from the wall at its upper end
Towards the wall at its upper end
Upwards at its upper end
Downwards at its upper end

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Applied Mechanics and Graphic Statics
If two bodies of masses M1 and M2(M1 > M2) are connected by alight inextensible string passing over a smooth pulley, the tension in the string, will be given by

T = g(M1 + M2)/(M1 × M2)
T = g(M2 - M1)/(M1 + M2)
T = g(M1 - M2)/(M1 + M2)
T = g(M2 + M1)/(M2 - M1)

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Applied Mechanics and Graphic Statics
A heavy ladder resting on a floor and against a vertical wall may not be in equilibrium, if

Floor and wall both are smooth surfaces
Floor is rough and the wall is smooth
Floor and wall both are rough surfaces
Floor is smooth and the wall is rough

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