Theory of Machine In a pantograph, all the pairs are Self-closed pairs Spherical pairs Sliding pairs Turning pairs Self-closed pairs Spherical pairs Sliding pairs Turning pairs ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine Torsional vibrations are said to occur when the particles of a body moves Parallel to its axis 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 ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine Whirling speed of the shaft is the speed at which Torsional vibrations occur Shaft tends to vibrate in longitudinal direction Shaft tends to vibrate vigorously in transverse direction Combination of transverse and longitudinal vibration occurs Torsional vibrations occur Shaft tends to vibrate in longitudinal direction Shaft tends to vibrate vigorously in transverse direction Combination of transverse and longitudinal vibration occurs ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The acceleration of the reciprocating roller follower when it has contact with the straight flanks of the tangent cam, is given by ω². (r₁ r₂). (1 - cos² θ) ω². (r₁ + r₂). [(2 - cos² θ)/cos³ θ] ω². (r₁ + r₂). (1 + cos² θ) ω². (r₁ - r₂). (1 - sin² θ) ω². (r₁ r₂). (1 - cos² θ) ω². (r₁ + r₂). [(2 - cos² θ)/cos³ θ] ω². (r₁ + r₂). (1 + cos² θ) ω². (r₁ - r₂). (1 - sin² θ) ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine Crowning on pulleys helps Increase belt and pulley life In decreasing the slip of the belt For automatic adjustment of belt position so that belt runs centrally In increasing velocity ratio Increase belt and pulley life In decreasing the slip of the belt For automatic adjustment of belt position so that belt runs centrally In increasing velocity ratio ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The displacement of a flat faced follower when it has contact with the flank of a circular arc cam, is given by (where R = Radius of flank, r₁ = Minimum radius of the cam, and θ = Angle turned through by the cam) R (1 - cosθ) (R - r₁) (1 - cosθ) (R - r₁) (1 - sinθ) R (1 - sinθ) R (1 - cosθ) (R - r₁) (1 - cosθ) (R - r₁) (1 - sinθ) R (1 - sinθ) ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS