Theory of Machine Which one of the following is an exact straight line mechanism using lower pairs? Peaucellier’s mechanism Grasshopper mechanism Robert’s mechanism Watt’s mechanism Peaucellier’s mechanism Grasshopper mechanism Robert’s mechanism Watt’s mechanism ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine Longitudinal vibrations are said to occur when the particles of a body moves In a circle about its axis Perpendicular to its axis None of these Parallel to its axis In a circle about its axis Perpendicular to its axis None of these Parallel to its axis ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The Ackerman steering gear mechanism is preferred to the Davis steering gear mechanism, because Both (A) and (B) The Ackerman steering gear is most economical Whole of the mechanism in the Ackerman steering gear is on the back of the front wheels The Ackerman steering gear consists of turning pairs Both (A) and (B) The Ackerman steering gear is most economical Whole of the mechanism in the Ackerman steering gear is on the back of the front wheels The Ackerman steering gear consists of turning pairs ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The primary unbalanced force is maximum when the angle of inclination of the crank with the line of stroke is 0° and 180° 0° and 90° 90° and 180° 180° and 360° 0° and 180° 0° and 90° 90° and 180° 180° and 360° 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 sinθ m.ω².r (cos 2θ/n) m.ω².r (sin 2θ/n) m.ω².r cosθ m.ω².r sinθ m.ω².r (cos 2θ/n) m.ω².r (sin 2θ/n) m.ω².r cosθ ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The swaying couple is due to the Two cylinders of locomotive Primary unbalanced force Secondary unbalanced force Partial balancing Two cylinders of locomotive Primary unbalanced force Secondary unbalanced force Partial balancing ANSWER DOWNLOAD EXAMIANS APP
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