Theory of Machine The natural frequency of free torsional vibrations of a shaft is equal to (where q = Torsional stiffness of the shaft, and I = Mass moment of inertia of the disc attached at the end of a shaft) 2π. √(q/I) 1/2π (1/2π). √(q/I) 2π qI 2π. √(q/I) 1/2π (1/2π). √(q/I) 2π qI 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 (sin 2θ/n) m.ω².r (cos 2θ/n) m.ω².r cosθ m.ω².r sinθ m.ω².r (sin 2θ/n) m.ω².r (cos 2θ/n) m.ω².r cosθ ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The absolute acceleration of any point ‘P’ in a link about center of rotation ‘O’ is Perpendicular to PO None of the listed here Along PO At 45° to PO Perpendicular to PO None of the listed here Along PO At 45° to PO ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine Which of the following is an inversion of Single slider crank chain? Rotary engine Elliptical trammel Oldham’s coupling Beam engine Rotary engine Elliptical trammel Oldham’s coupling Beam engine ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine Which of the following is a turning pair? Piston and cylinder of a reciprocating steam engine Lead screw of a lathe with nut Ball and a socket joint Shaft with collars at both ends fitted into a circular hole Piston and cylinder of a reciprocating steam engine Lead screw of a lathe with nut Ball and a socket joint Shaft with collars at both ends fitted into a circular hole ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine When there is a reduction in amplitude over every cycle of vibration, then the body is said to have Forced vibration Damped vibration Under damped vibration Free vibration Forced vibration Damped vibration Under damped vibration Free vibration ANSWER DOWNLOAD EXAMIANS APP
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