Theory of Machine The efficiency of a screw jack is maximum, when (where α = Helix angle, and φ = Angle of friction) α = 45° - φ/2 α = 90° - φ α = 90° + φ α = 45° + φ/2 α = 45° - φ/2 α = 90° - φ α = 90° + φ α = 45° + φ/2 ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine If the controlling force line for a spring controlled governor when produced intersects the Y-axis at the origin, then the governor is said to be Unstable Isochronous None of the listed here Stable Unstable Isochronous None of the listed here Stable ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine A single degree of freedom system is given by, m × (d²x/dt²) + c × (dx/dt) + sx = F.cosω.t with usual notations. It represents Forced vibration with damping Free vibration without damping Free vibration with damping Forced vibration without damping Forced vibration with damping Free vibration without damping Free vibration with damping Forced vibration without damping ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The motion between a pair which takes place in ____ is known as incompletely constrained motion. None of the listed here More than one direction One direction only Two directions only None of the listed here More than one direction One direction only Two directions only ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine In a screw jack, the effort required to lower the load W is given by P = W tan(φ - α) P = W cos(α + φ) P = W tan(α - φ) P = W tan(α + φ) P = W tan(φ - α) P = W cos(α + φ) P = W tan(α - φ) P = W tan(α + φ) ANSWER DOWNLOAD EXAMIANS APP
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