Theory of Machine The frequency of damped vibrations with viscous damping is ________ the frequency of undamped vibrations. Less than Same as More than None of these Less than Same as More than None of these ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The efficiency of a screw jack is maximum, when (where α = Helix angle, and φ = Angle of friction) α = 45° + φ/2 α = 90° + φ α = 90° - φ α = 45° - φ/2 α = 45° + φ/2 α = 90° + φ α = 90° - φ α = 45° - φ/2 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 centre of the disc has centrifugal acceleration The centre of the disc has zero acceleration The point on the disc making contact with the plane surface has zero acceleration All points of the disc have the same velocity The centre of the disc has centrifugal acceleration The centre of the disc has zero acceleration The point on the disc making contact with the plane surface has zero acceleration ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The example of completely constrained motion is a Motion of a piston in the cylinder of a steam engine Motion of a shaft with collars at each end in a circular hole Motion of a square bar in a square hole All of these Motion of a piston in the cylinder of a steam engine Motion of a shaft with collars at each end in a circular hole Motion of a square bar in a square hole All of these ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The secondary 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 cosθ m.ω².r (sin 2θ/n) m.ω².r sinθ m.ω².r (cos 2θ/n) m.ω².r cosθ m.ω².r (sin 2θ/n) m.ω².r sinθ m.ω².r (cos 2θ/n) ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The Coriolis component of acceleration acts Along the sliding surface Perpendicular to the sliding surface At 45° to the sliding surface Parallel to the sliding surface Along the sliding surface Perpendicular to the sliding surface At 45° to the sliding surface Parallel to the sliding surface ANSWER DOWNLOAD EXAMIANS APP
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