Theory of Machine When the speed of the engine fluctuates continuously above and below the mean speed, the governor is said to be Stable Unstable Isochronous Hunt Stable Unstable Isochronous Hunt ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine A watt's governor can work satisfactorily at speeds from 200 to 300 r.p.m. 100 to 200 r.p.m. 60 to 80 r.p.m. 80 to 100 r.p.m. 200 to 300 r.p.m. 100 to 200 r.p.m. 60 to 80 r.p.m. 80 to 100 r.p.m. 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 Bearing centre line coincides with the axis The system is unbalanced Resonance is caused due to the heavy mass of the rotor The shafts are rotating at very high speeds Bearing centre line coincides with the axis The system is unbalanced Resonance is caused due to the heavy mass of the rotor ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The velocity of sliding of meshing gear teeth is (Where ω₁ and ω₂ are angular velocities of meshing gears and ‘y’ is distance between point of contact and the pitch point) (ω₁ + ω₂) y (ω₁ + ω₂)/y (ω₁ × ω₂) y (ω₁/ω₂) y (ω₁ + ω₂) y (ω₁ + ω₂)/y (ω₁ × ω₂) y (ω₁/ω₂) y ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine When a slider moves on a fixed link having curved surface, their instantaneous centre lies At the pin joint On their point of contact At the centre of curvature At the centre of circle At the pin joint On their point of contact At the centre of curvature At the centre of circle ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The relation between number of links (l) and number of joints (j) in a kinematic chain is l = (3/4).(j + 3) l = (1/2).(j + 2) l = (2/3).(j + 2) l = j + 4 l = (3/4).(j + 3) l = (1/2).(j + 2) l = (2/3).(j + 2) l = j + 4 ANSWER DOWNLOAD EXAMIANS APP
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