Theory of Machine In a simple harmonic motion, the velocity vector with respect to displacement vector Leads by 90° Leads by 180° Is in phase Lags by 90° Leads by 90° Leads by 180° Is in phase Lags by 90° ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The frequency of oscillation of a torsional pendulum is r/2πk. √(g/l) 2πr/k. √(g/l) r/2πk. √(l/g) 2πk/r. √(g/l) r/2πk. √(g/l) 2πr/k. √(g/l) r/2πk. √(l/g) 2πk/r. √(g/l) ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine A single degree of freedom system is given by, m × (d²x/dt²) + c × (dx/dt) + sx = F.cosω.t with usual notations. It represents Free vibration without damping Free vibration with damping Forced vibration with damping Forced vibration without damping Free vibration without damping Free vibration with damping Forced vibration with damping Forced vibration without damping ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine A thin circular disc is rolling with a uniform linear speed, along a straight path on a plane surface. Which of the following statement is correct in this regard? All points of the disc have the same velocity The point on the disc making contact with the plane surface has zero acceleration The centre of the disc has centrifugal acceleration The centre of the disc has zero acceleration All points of the disc have the same velocity The point on the disc making contact with the plane surface has zero acceleration The centre of the disc has centrifugal acceleration The centre of the disc has zero acceleration ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The primary unbalanced force due to inertia of reciprocating parts in a reciprocating engine is given by (where m = Mass of reciprocating parts, ω = Angular speed of crank, r = Radius of crank, θ = Angle of inclination of crank with the line of stroke, and n = Ratio of the length of connecting rod to radius of crank) m.ω².r sinθ m.ω².r (cos 2θ/n) m.ω².r (sin 2θ/n) m.ω².r cosθ m.ω².r sinθ m.ω².r (cos 2θ/n) m.ω².r (sin 2θ/n) m.ω².r cosθ ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine When a shaking force is transmitted through the springs, damping becomes detrimental when the ratio of its frequency to the natural frequency is greater than 2 0.5 0.25 1 2 0.5 0.25 1 ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS