Theory of Machine A disturbing mass m₁ attached to the rotating shaft may be balanced by a single mass m₂ attached in the same plane of rotation as that of m₁, such that (where r₁ and r₂ are the radii of rotation of m₁ and m₂ respectively) m₁ r₂ = m₂ r₁ m₁ r₁ = m₂ r₂ None of these m₁ m₂ = r₁ r₂ m₁ r₂ = m₂ r₁ m₁ r₁ = m₂ r₂ None of these m₁ m₂ = r₁ r₂ ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine In a mechanism, the fixed instantaneous centers are those centers which Vary with the configuration of the mechanism Moves as the mechanism moves, but joints are of permanent nature Remain in the same place for all configurations of the mechanism None of the listed here Vary with the configuration of the mechanism Moves as the mechanism moves, but joints are of permanent nature Remain in the same place for all configurations of the mechanism None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine In the below figure, PC is the connecting rod and OC is the crank making an angle θ with the line of stroke PO and rotates with uniform angular velocity at ω rad/s. The Klien's acceleration diagram for determining the acceleration of the piston P is shown by quadrilateral CQNO, if N coincides with O, then Acceleration and velocity of the piston P is zero Acceleration of the piston P is maximum and its velocity is zero Acceleration and velocity of the piston P is maximum Acceleration of the piston P is zero and its velocity is maximum Acceleration and velocity of the piston P is zero Acceleration of the piston P is maximum and its velocity is zero Acceleration and velocity of the piston P is maximum Acceleration of the piston P is zero and its velocity is maximum ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine A spring controlled governor is found unstable. It can be made stable by Increasing the spring stiffness Increasing the ball mass Decreasing the spring stiffness Decreasing the ball mass Increasing the spring stiffness Increasing the ball mass Decreasing the spring stiffness Decreasing the ball mass ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine If ω/ωn is very low for a body vibrating under steady state vibrations, the phase angle for all values of damping factors, will tend to approach 360° 0° 180° 90° 360° 0° 180° 90° ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The unbalanced primary forces in a reciprocating engine are Balanced partially Balanced by secondary forces Balanced completely Not balanced Balanced partially Balanced by secondary forces Balanced completely Not balanced ANSWER DOWNLOAD EXAMIANS APP
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