Theory of Machine A spring controlled governor is said to be isochronous when the controlling force Decreases as the radius of rotation increases Increases as the radius of rotation decreases Increases as the radius of rotation increases Remain constant for all radii of rotation Decreases as the radius of rotation increases Increases as the radius of rotation decreases Increases as the radius of rotation increases Remain constant for all radii of rotation ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The mechanism consisting of three turning pairs and one sliding pair, is called a Crank and slotted lever quick return motion mechanism Single slider crank chain All of these Whitworth quick return motion mechanism Crank and slotted lever quick return motion mechanism Single slider crank chain All of these Whitworth quick return motion mechanism ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The power of a Porter governor is equal to [c²/(1 + 2c)] (m + M) g.h [2c²/(1 + 2c)] (m + M) g.h [3c²/(1 + 2c)] (m + M) g.h [4c²/(1 + 2c)] (m + M) g.h [c²/(1 + 2c)] (m + M) g.h [2c²/(1 + 2c)] (m + M) g.h [3c²/(1 + 2c)] (m + M) g.h [4c²/(1 + 2c)] (m + M) g.h 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
Theory of Machine When the addenda on pinion and wheel is such that the path of approach and path of recess are half of their maximum possible values, then the length of the path of contact is given by (where r = Pitch circle radius of pinion, R = Pitch circle radius of wheel, and φ = Pressure angle) [(r + R) sinφ]/2 [(r² + R²) sinφ]/2 [(r² + R²) cosφ]/2 [(r + R) cosφ]/2 [(r + R) sinφ]/2 [(r² + R²) sinφ]/2 [(r² + R²) cosφ]/2 [(r + R) cosφ]/2 ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine In considering friction of a V-thread, the virtual coefficient of friction (μ₁) is given by μ₁ = μ sin β μ₁ = μ/cos β μ₁ = μ/sin β μ₁ = μ cos β μ₁ = μ sin β μ₁ = μ/cos β μ₁ = μ/sin β μ₁ = μ cos β ANSWER DOWNLOAD EXAMIANS APP
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