Theory of Machine The critical speed of a shaft with a disc supported in between is equal to the natural frequency of the system in Transverse vibrations Longitudinal vibrations All of these Torsional vibrations Transverse vibrations Longitudinal vibrations All of these Torsional vibrations ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The secondary unbalanced force due to inertia of reciprocating parts in a reciprocating engine is given by (where m = Mass of reciprocating parts, ω = Angular speed of crank, r = Radius of crank, θ = Angle of inclination of crank with the line of stroke, and n = Ratio of the length of connecting rod to radius of crank) m.ω².r sinθ m.ω².r cosθ m.ω².r (cos 2θ/n) m.ω².r (sin 2θ/n) m.ω².r sinθ m.ω².r cosθ m.ω².r (cos 2θ/n) m.ω².r (sin 2θ/n) ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The sense of Coriolis component 2 ωv is same as that of the relative velocity vector v rotated at 45° in the direction opposite to the rotation of the link containing the path 180° in the direction opposite to the rotation of the link containing the path 45° in the direction of rotation of the link containing the path 90° in the direction of rotation of the link containing the path 45° in the direction opposite to the rotation of the link containing the path 180° in the direction opposite to the rotation of the link containing the path 45° in the direction of rotation of the link containing the path 90° in the direction of rotation of the link containing the path ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine A machine mounted on a single coil spring has a period of free vibration of tp . If the spring is cut into four equal parts and placed in parallel and the machine is mounted on them, then the period of free vibration of the new system will become tp /16 tp /4 4 tp 16 tp tp /16 tp /4 4 tp 16 tp ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The pitching of a ship produces forces on the bearings which act __________ to the motion of the ship. Vertically and parallel Horizontally and perpendicular Horizontally and parallel Vertically and perpendicular Vertically and parallel Horizontally and perpendicular Horizontally and parallel Vertically and perpendicular ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine In a simple harmonic motion, the velocity vector with respect to displacement vector Lags by 90° Is in phase Leads by 90° Leads by 180° Lags by 90° Is in phase Leads by 90° Leads by 180° ANSWER DOWNLOAD EXAMIANS APP
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