Theory of Machine When a body moves with simple harmonic motion, the product of its periodic time and frequency is equal to π/2 π One Zero π/2 π One Zero ANSWER DOWNLOAD EXAMIANS APP
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) None of these m₁ r₂ = m₂ r₁ m₁ r₁ = m₂ r₂ m₁ m₂ = r₁ r₂ None of these m₁ r₂ = m₂ r₁ m₁ r₁ = m₂ r₂ m₁ m₂ = r₁ r₂ ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The equation of motion for a vibrating system with viscous damping is (d²x/dt²) + (c/m). (dx/dt) + (s/m). x = 0. If the roots of this equation are real, then the system will be Critically damped Under damped Without vibrations Over-damped Critically damped Under damped Without vibrations Over-damped ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The essential condition of placing the two masses, so that the system becomes dynamically equivalent, is (where l₁ and l₂ = Distance of two masses from the centre of gravity of the body, and kG = Radius of gyration of the body) l₁l₂ = kG² l₁ = kG l₁l₂ = kG l₂ = kG l₁l₂ = kG² l₁ = kG l₁l₂ = kG l₂ = kG ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine A ball and a socket forms a Turning pair Screw pair Rolling pair Spherical pair Turning pair Screw pair Rolling pair Spherical pair ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The unbalanced primary forces in a reciprocating engine are Balanced by secondary forces Not balanced Balanced partially Balanced completely Balanced by secondary forces Not balanced Balanced partially Balanced completely ANSWER DOWNLOAD EXAMIANS APP
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