Theory of Machine The train value of a gear train is Reciprocal of velocity ratio of a gear train Equal to velocity ratio of a gear train Always greater than unity Always less than unity Reciprocal of velocity ratio of a gear train Equal to velocity ratio of a gear train Always greater than unity Always less than unity ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine In vibration isolation system, the transmissibility will be equal to unity, for all values of damping factor, if ω/ωn is Equal to 2 Greater than 2 Less than 2 Equal to 1 Equal to 2 Greater than 2 Less than 2 Equal to 1 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 is +ve and b is also +ve a is +ve and b is -ve a is +ve and b = 0 a = 0 and b is +ve a is +ve and b is also +ve a is +ve and b is -ve a is +ve and b = 0 a = 0 and b is +ve ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine In vibration isolation system, if ω/ωn > 1, then the phase difference between the transmitted force and the disturbing force is 90° 180° 270° 0° 90° 180° 270° 0° ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine A spring controlled governor is found unstable. It can be made stable by Increasing the spring stiffness Decreasing the ball mass Increasing the ball mass Decreasing the spring stiffness Increasing the spring stiffness Decreasing the ball mass Increasing the ball mass Decreasing the spring stiffness ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine For dynamic balancing of a shaft The net dynamic force acting on the shaft is equal to zero None of these Both (A) and (B) The net couple due to the dynamic forces acting on the shaft is equal to zero The net dynamic force acting on the shaft is equal to zero None of these Both (A) and (B) The net couple due to the dynamic forces acting on the shaft is equal to zero ANSWER DOWNLOAD EXAMIANS APP
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