Theory of Machine If ω/ωn is very high for a body vibrating under steady state vibrations, the phase angle for all values of damping factors, will tend to approach 360° 180° 0° 90° 360° 180° 0° 90° ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The coefficient of fluctuation of speed is __________ of maximum fluctuation of speed and the mean speed. Sum Difference Ratio Product Sum Difference Ratio Product 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 cosθ m.ω².r (cos 2θ/n) m.ω².r sinθ m.ω².r (sin 2θ/n) m.ω².r cosθ m.ω².r (cos 2θ/n) m.ω².r sinθ m.ω².r (sin 2θ/n) ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The maximum fluctuation of speed is the Sum of maximum and minimum speeds Difference of the maximum and minimum speeds Variations of speed above and below the mean resisting torque line Difference of minimum fluctuation of speed and the mean speed Sum of maximum and minimum speeds Difference of the maximum and minimum speeds Variations of speed above and below the mean resisting torque line Difference of minimum fluctuation of speed and the mean speed ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine In a Hartnell governor, the lift of the sleeve is given by (where r₁ and r₂ = Max. and min. radii of rotation, x = Length of ball arm of the lever, and y = Length of sleeve arm of the lever) (r₁ + r₂) (y/x) (r₁ + r₂) (x/y) (r₁ - r₂) (x/y) (r₁ - r₂) (y/x) (r₁ + r₂) (y/x) (r₁ + r₂) (x/y) (r₁ - r₂) (x/y) (r₁ - r₂) (y/x) ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine A machine mounted on a single coil spring has a period of free vibration of tp . If the spring is cut into four equal parts and placed in parallel and the machine is mounted on them, then the period of free vibration of the new system will become 4 tp tp /4 tp /16 16 tp 4 tp tp /4 tp /16 16 tp ANSWER DOWNLOAD EXAMIANS APP
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