Theory of Machine Which one of the following is an exact straight line mechanism using lower pairs? Robert’s mechanism Watt’s mechanism Peaucellier’s mechanism Grasshopper mechanism Robert’s mechanism Watt’s mechanism Peaucellier’s mechanism Grasshopper mechanism ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The direction of Coriolis component of acceleration is the direction Along tangential acceleration Of relative velocity vector for the two coincident points rotated by 90° in the direction of the angular velocity of the rotation of the link Along perpendicular to angular velocity Along the centripetal acceleration Along tangential acceleration Of relative velocity vector for the two coincident points rotated by 90° in the direction of the angular velocity of the rotation of the link Along perpendicular to angular velocity Along the centripetal acceleration ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine In a pantograph, all the pairs are Turning pairs Sliding pairs Spherical pairs Self-closed pairs Turning pairs Sliding pairs Spherical pairs Self-closed pairs ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine In automobiles the power is transmitted from gear box to differential through Knuckle joint Hooke's joint Universal joint Bevel gear Knuckle joint Hooke's joint Universal joint Bevel gear 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 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) ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine Frequency of vibrations is usually expressed in None of these Number of cycles per minute Number of cycles per hour Number of cycles per second None of these Number of cycles per minute Number of cycles per hour Number of cycles per second ANSWER DOWNLOAD EXAMIANS APP
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