Engineering Mechanics The law of the machine is (where P = Effort applied to lift the load, m = A constant which is equal to the slope of the line, W = Load lifted, and C = Another constant which represents the machine friction.) P = mW + C P = m/W + C P = C - mW P = mW - C P = mW + C P = m/W + C P = C - mW P = mW - C ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics The forces which meet at one point, but their lines of action __________ on the same plane, are Known as non-coplanar concurrent forces. None of these Either A or B Do not lie Lie None of these Either A or B Do not lie Lie ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics The efficiency of a lifting machine is the ratio of Mechanical advantage to the velocity ratio Output to the input All of these Work done by the machine to the work done on the machine Mechanical advantage to the velocity ratio Output to the input All of these Work done by the machine to the work done on the machine ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics The periodic time of a particle with simple harmonic motion is _________ proportional to the angular velocity. Inversely Square root Directly None of these Inversely Square root Directly None of these ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics A semicircular disc rests on a horizontal surface with its top flat surface horizontal and circular portion touching down. The coefficient of friction between semi circular disc and horizontal surface is µ. This disc is to be pulled by a horizontal force applied at one edge and it always remains horizontal. When the disc is about to start moving, its top horizontal force will Slant down towards direction of pull None of these Remain horizontal Slant up towards direction of pull Slant down towards direction of pull None of these Remain horizontal Slant up towards direction of pull ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics The maximum efficiency of a screw jack is (1 - sinφ)/(1 + sinφ) (1 + sinφ)/(1 - sinφ) (1 - tanφ)/(1 + tanφ) (1 + tanφ)/(1 - tanφ) (1 - sinφ)/(1 + sinφ) (1 + sinφ)/(1 - sinφ) (1 - tanφ)/(1 + tanφ) (1 + tanφ)/(1 - tanφ) ANSWER DOWNLOAD EXAMIANS APP
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