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Applied Mechanics and Graphic Statics

Applied Mechanics and Graphic Statics
The beam shown in below figure is supported by a hinge at ‘A’ and a roller at ‘B’. The reaction RA of the hinged support ‘A’ of the beam, is Applied Mechanics and Graphic Statics mcq question image

10.8 t
10.6 t
10.2 t
10.4 t

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Applied Mechanics and Graphic Statics
A circular disc rotates at n rpm. The angular velocity of a circular ring of same mass and radius as the disc and to have the same angular momentum is

n/2 rpm
n/4 rpm
n rpm
2n rpm

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

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

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Applied Mechanics and Graphic Statics
Instantaneous center is at infinity when the angular velocity is

Constant
Minimum
Zero
Maximum

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Applied Mechanics and Graphic Statics
Minimum pull in a suspended cable with supports at two ends is equal to

Resultant of horizontal thrust and support reaction
Half the weight of the cable
Horizontal thrust
Support reactions

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Applied Mechanics and Graphic Statics
A cube on a smooth horizontal surface

Cannot be in unstable equilibrium
Can be in any of these states
Cannot be in stable equilibrium
Cannot be in neutral equilibrium

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