Theory of Machine In S.H.M., the velocity vector w.r.t. displacement vector Lags by 90° Leads by 180° Are in phase Leads by 90° Lags by 90° Leads by 180° Are in phase Leads by 90° ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The maximum fluctuation of speed is the Difference of the maximum and minimum speeds Sum of maximum and minimum speeds Variations of speed above and below the mean resisting torque line Difference of minimum fluctuation of speed and the mean speed Difference of the maximum and minimum speeds Sum of maximum and minimum speeds Variations of speed above and below the mean resisting torque line Difference of minimum fluctuation of speed and the mean speed ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine In a screw jack, the effort required to lift the load W is given by (where α = Helix angle, and φ = Angle of friction) P = W tan(φ - α) P = W tan(α + φ) P = W tan(α - φ) P = W cos(α + φ) P = W tan(φ - α) P = W tan(α + φ) P = W tan(α - φ) P = W cos(α + φ) ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The factional torque for square thread at the mean radius r while raising load W is given by T = W.r tan(φ - α) T = W.r tanφ T = W.r tanα T = W.r tan(φ + α) T = W.r tan(φ - α) T = W.r tanφ T = W.r tanα T = W.r tan(φ + α) ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine In elliptical trammels All four pairs are turning Two pairs turning and two pairs sliding Three pairs turning and one pair sliding One pair turning and three pairs sliding All four pairs are turning Two pairs turning and two pairs sliding Three pairs turning and one pair sliding One pair turning and three pairs sliding ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The efficiency of a screw jack is maximum, when (where α = Helix angle, and φ = Angle of friction) α = 90° + φ α = 90° - φ α = 45° - φ/2 α = 45° + φ/2 α = 90° + φ α = 90° - φ α = 45° - φ/2 α = 45° + φ/2 ANSWER DOWNLOAD EXAMIANS APP
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