Theory of Machine A watt's governor can work satisfactorily at speeds from 60 to 80 r.p.m. 100 to 200 r.p.m. 200 to 300 r.p.m. 80 to 100 r.p.m. 60 to 80 r.p.m. 100 to 200 r.p.m. 200 to 300 r.p.m. 80 to 100 r.p.m. ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine When the radius of rotation of balls __________ as the equilibrium speed increases, the governor is said to be unstable. Increases Remains constant Decreases None of these Increases Remains constant Decreases None of these ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine Crowning on pulleys helps In increasing velocity ratio Increase belt and pulley life For automatic adjustment of belt position so that belt runs centrally In decreasing the slip of the belt In increasing velocity ratio Increase belt and pulley life For automatic adjustment of belt position so that belt runs centrally In decreasing the slip of the belt ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine In a Hartnell governor, the stiffness of the spring is given by (where S1 and S2 = Spring forces exerted on the sleeve at max. and min. radii of rotation, and h = Compression of the spring) (S₁ + S₂) / 2h (S₁ + S₂) / h (S₁ - S₂) / 2h (S₁ - S₂) / h (S₁ + S₂) / 2h (S₁ + S₂) / h (S₁ - S₂) / 2h (S₁ - S₂) / h ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The minimum force required to slide a body of weight W on a rough horizontal plane is W tanθ W sinθ W cosecθ W cosθ W tanθ W sinθ W cosecθ W cosθ 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 = j + 4 l = (2/3).(j + 2) l = (3/4).(j + 3) l = (1/2).(j + 2) l = j + 4 l = (2/3).(j + 2) ANSWER DOWNLOAD EXAMIANS APP
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