Theory of Machine The method of direct and reverse cranks is used in engines for Balancing of forces and couples Vibration analysis Kinematic analysis The control of speed fluctuations Balancing of forces and couples Vibration analysis Kinematic analysis The control of speed fluctuations ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The Coriolis component of acceleration is taken into account for Four bar chain mechanism Quick return motion mechanism All of these Slider crank mechanism Four bar chain mechanism Quick return motion mechanism All of these Slider crank 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 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 inversion of a mechanism is Turning its upside down Obtained by fixing different links in a kinematic chain Obtained by reversing the input and output motion Changing of a higher pair to a lower pair Turning its upside down Obtained by fixing different links in a kinematic chain Obtained by reversing the input and output motion Changing of a higher pair to a lower pair ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine In order to facilitate starting of locomotive in any position, the cranks of a locomotive with two cylinders, are placed at 45° to each other 180° to each other 120° to each other 90° to each other 45° to each other 180° to each other 120° to each other 90° to each other ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine A torsional system with discs of moment of inertia I₁ and I₂ as shown in the below figure, is gear driven such that the ratio of speed of shaft B to shaft A is 'G'. Neglecting the inertia of gears, the equivalent inertia of disc on shaft B at the speed of shaft A is equal to G.I₂ I₂/G² I₂/G G².I₂ G.I₂ I₂/G² I₂/G G².I₂ ANSWER DOWNLOAD EXAMIANS APP
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