Theory of Machine The rotating shafts tend to vibrate violently at whirling speeds because Resonance is caused due to the heavy mass of the rotor The shafts are rotating at very high speeds The system is unbalanced Bearing centre line coincides with the axis Resonance is caused due to the heavy mass of the rotor The shafts are rotating at very high speeds The system is unbalanced Bearing centre line coincides with the axis ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The power of a Porter governor is equal to [c²/(1 + 2c)] (m + M) g.h [3c²/(1 + 2c)] (m + M) g.h [4c²/(1 + 2c)] (m + M) g.h [2c²/(1 + 2c)] (m + M) g.h [c²/(1 + 2c)] (m + M) g.h [3c²/(1 + 2c)] (m + M) g.h [4c²/(1 + 2c)] (m + M) g.h [2c²/(1 + 2c)] (m + M) g.h ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The direction of Coriolis component of acceleration is the direction Along the centripetal acceleration Along tangential acceleration Along perpendicular to angular velocity Of relative velocity vector for the two coincident points rotated by 90° in the direction of the angular velocity of the rotation of the link Along the centripetal acceleration Along tangential acceleration Along perpendicular to angular velocity Of relative velocity vector for the two coincident points rotated by 90° in the direction of the angular velocity of the rotation of the link ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The essential condition of placing the two masses, so that the system becomes dynamically equivalent, is (where l₁ and l₂ = Distance of two masses from the centre of gravity of the body, and kG = Radius of gyration of the body) l₁ = kG l₂ = kG l₁l₂ = kG l₁l₂ = kG² l₁ = kG l₂ = kG l₁l₂ = kG l₁l₂ = kG² ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine When the sleeve of a Porter governor moves downwards, the governor speed Decreases First increases and then decreases Increases Remain unaffected Decreases First increases and then decreases Increases Remain unaffected ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine Which gear train is used for higher velocity ratios in a small space? Simple gear train Epicyclic gear train Reverted gear train Compound gear train Simple gear train Epicyclic gear train Reverted gear train Compound gear train ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS