Theory of Machine When the radius of rotation of balls __________ as the equilibrium speed increases, the governor is said to be unstable. Decreases None of these Increases Remains constant Decreases None of these Increases Remains constant ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The efficiency of a screw jack is maximum, when (where α = Helix angle, and φ = Angle of friction) α = 45° + φ/2 α = 90° + φ α = 90° - φ α = 45° - φ/2 α = 45° + φ/2 α = 90° + φ α = 90° - φ α = 45° - φ/2 ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine A Porter governor is a Dead weight governor Inertia governor Spring loaded governor Pendulum type governor Dead weight governor Inertia governor Spring loaded governor Pendulum type governor ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine In a radial cam, the follower moves In a direction perpendicular to the cam axis In any direction irrespective of the cam axis In a direction parallel to the cam axis Along the cam axis In a direction perpendicular to the cam axis In any direction irrespective of the cam axis In a direction parallel to the cam axis Along the cam axis ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine A Hartnell governor has its controlling force (Fc) given by Fc = ar + b, where r is the radius of rotation and a and b are constants. The governor becomes isochronous when a = 0 and b is +ve a is +ve and b is -ve a is +ve and b is also +ve a is +ve and b = 0 a = 0 and b is +ve a is +ve and b is -ve a is +ve and b is also +ve a is +ve and b = 0 ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine Tangential acceleration direction is Along the angular velocity Perpendicular to angular velocity May be any one of these Opposite to angular velocity Along the angular velocity Perpendicular to angular velocity May be any one of these Opposite to angular velocity ANSWER DOWNLOAD EXAMIANS APP
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