Theory of Machine Torsional vibrations are said to occur when the particles of a body moves None of these Perpendicular to its axis Parallel to its axis In a circle about its axis None of these Perpendicular to its axis Parallel to its axis In a circle about its axis ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine Which one of the following is an exact straight line mechanism using lower pairs? Watt’s mechanism Grasshopper mechanism Robert’s mechanism Peaucellier’s mechanism Watt’s mechanism Grasshopper mechanism Robert’s mechanism Peaucellier’s mechanism 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 (sin 2θ/n) m.ω².r sinθ m.ω².r cosθ m.ω².r (cos 2θ/n) m.ω².r (sin 2θ/n) m.ω².r sinθ m.ω².r cosθ m.ω².r (cos 2θ/n) ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The method of direct and reverse cranks is used in engines for Vibration analysis Balancing of forces and couples Kinematic analysis The control of speed fluctuations Vibration analysis Balancing of forces and couples Kinematic analysis The control of speed fluctuations ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The distance by which the __________ of the D-slide valve overlaps the steam port is called exhaust lap. Outer edge None of these Corners Inner edge Outer edge None of these Corners Inner edge ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The magnitude of linear velocity of a point B on a link AB relative to point A is, (Where ω = Angular velocity of the link AB) ω² × AB ω × (AB)² ω × AB (ω × AB)² ω² × AB ω × (AB)² ω × AB (ω × AB)² ANSWER DOWNLOAD EXAMIANS APP
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