Theory of Machine Which of the following statements regarding laws governing the friction between dry surfaces are correct? The friction force is directly proportional to the normal force. All of these The friction force is dependent on the materials of the contact surfaces. The friction force is independent of me area of contact. The friction force is directly proportional to the normal force. All of these The friction force is dependent on the materials of the contact surfaces. The friction force is independent of me area of contact. ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine For an isochronous Hartnell governor (where r₁ and r₂ = Maximum and minimum radius of rotation of balls respectively, S₁ and S₂ = Maximum and minimum force exerted on the sleeve respectively, and M = Mass on the sleeve) (m.g + S₁)/(m.g + S₂) = r₁/r₂ (m.g - S₁)/(m.g - S₂) = r₂/r₁ S₂/S₁ = r₁/r₂ S₁/S₂ = r₁/r₂ (m.g + S₁)/(m.g + S₂) = r₁/r₂ (m.g - S₁)/(m.g - S₂) = r₂/r₁ S₂/S₁ = r₁/r₂ S₁/S₂ = r₁/r₂ ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The swaying couple is maximum or minimum when the angle of inclination of the crank to the line of stroke (θ) is equal to 270° and 360° 180° and 270° 45° and 225° 90° and 180° 270° and 360° 180° and 270° 45° and 225° 90° and 180° ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine A flywheel is fitted to the crankshaft of an engine having W as the amount of indicated work per revolution and permissible limits of coefficient of fluctuation of energy and speed as CE and CS respectively. The kinetic energy of the flywheel is given by 2 W CE / CS W CS / 2CE W CE / CS W CE / 2CS 2 W CE / CS W CS / 2CE W CE / CS W CE / 2CS ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine If the controlling force line for a spring controlled governor when produced intersects the Y-axis at the origin, then the governor is said to be Isochronous Unstable Stable None of the listed here Isochronous Unstable Stable None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine Carnot cycle is a quasi static cycle an irreversible cycle a reversible cycle a semi-reversible cycle a quasi static cycle an irreversible cycle a reversible cycle a semi-reversible cycle ANSWER DOWNLOAD EXAMIANS APP
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