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) l₁l₂ = kG l₂ = kG l₁l₂ = kG² l₁ = kG l₁l₂ = kG l₂ = kG l₁l₂ = kG² l₁ = kG ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The example of rolling pair is Bolt and nut Ball and socket joint Ball bearing and roller bearing Lead screw of a lathe Bolt and nut Ball and socket joint Ball bearing and roller bearing Lead screw of a lathe ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The cam and follower is an example of Lower pair Higher pair Sliding pair Rolling pair Lower pair Higher pair Sliding pair Rolling pair ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine Governor is used in automobile to Limit the vehicle speed Maximize the fuel economy Maintain constant engine speed Decrease the variation of speed Limit the vehicle speed Maximize the fuel economy Maintain constant engine speed Decrease the variation of speed ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The rotating shafts tend to vibrate violently at whirling speeds because The shafts are rotating at very high speeds Resonance is caused due to the heavy mass of the rotor The system is unbalanced Bearing centre line coincides with the axis The shafts are rotating at very high speeds Resonance is caused due to the heavy mass of the rotor The system is unbalanced Bearing centre line coincides with the axis ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine When the addenda on pinion and wheel is such that the path of approach and path of recess are half of their maximum possible values, then the length of the path of contact is given by (where r = Pitch circle radius of pinion, R = Pitch circle radius of wheel, and φ = Pressure angle) [(r + R) cosφ]/2 [(r + R) sinφ]/2 [(r² + R²) sinφ]/2 [(r² + R²) cosφ]/2 [(r + R) cosφ]/2 [(r + R) sinφ]/2 [(r² + R²) sinφ]/2 [(r² + R²) cosφ]/2 ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS