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 = 45° - φ/2 α = 45° + φ/2 α = 90° + φ α = 90° - φ α = 45° - φ/2 α = 45° + φ/2 α = 90° + φ ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine In a four-bar chain it is required to give an oscillatory motion to the follower for a continuous rotation of the crank. For the lengths of 50 mm of crank and 70 mm of the follower, determine theoretical maximum length of coupler. The minimum length of the coupler will be 45 mm 95 mm Slightly less than 45 mm Slightly more than 45 mm 45 mm 95 mm Slightly less than 45 mm Slightly more than 45 mm ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine A mechanism consisting of four links is called a __________ mechanism. Simple None of these Binary Compound Simple None of these Binary Compound ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine Any point on a link connecting double slider crank chain will trace a Parabola Circle Ellipse Straight line Parabola Circle Ellipse Straight line ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The coefficient of fluctuation of speed is __________ of maximum fluctuation of speed and the mean speed. Ratio Product Sum Difference Ratio Product Sum Difference ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The example of rolling pair is Ball bearing and roller bearing Ball and socket joint Bolt and nut Lead screw of a lathe Ball bearing and roller bearing Ball and socket joint Bolt and nut Lead screw of a lathe ANSWER DOWNLOAD EXAMIANS APP
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