Machine Design The helix angle for single helical gears ranges from 10° to 15° 15° to 20° 35° to 50° 20° to 35° 10° to 15° 15° to 20° 35° to 50° 20° to 35° ANSWER DOWNLOAD EXAMIANS APP
Machine Design The objective of idler pulley in belt drive is to Increase the power transmission capacity Increase the wrap angle and belt tension Decrease the tendency of belt to slip All the above objectives Increase the power transmission capacity Increase the wrap angle and belt tension Decrease the tendency of belt to slip All the above objectives ANSWER DOWNLOAD EXAMIANS APP
Machine Design In a band and block brake, the ratio of tensions on the tight and slack sides of band is given by (where μ = Coefficient of friction between the blocks and the drum, θ = Semi-angle of each block subtending at the centre of drum, and n = Number of blocks) T₁/T₂ = [(1 + μ tanθ)/ (1 - μ tanθ)]n T₁/T₂ = (μθ)n T₁/T₂ = μθ × n T₁/T₂ = [(1 - μ tanθ)/ (1 + μ tanθ)]n T₁/T₂ = [(1 + μ tanθ)/ (1 - μ tanθ)]n T₁/T₂ = (μθ)n T₁/T₂ = μθ × n T₁/T₂ = [(1 - μ tanθ)/ (1 + μ tanθ)]n ANSWER DOWNLOAD EXAMIANS APP
Machine Design When a circular beam of diameter d is subjected to a shear force F, the maximum shear stress induced will be 4F/ πd² 6F/ πd² 8F/ πd² 16F/ 3πd² 4F/ πd² 6F/ πd² 8F/ πd² 16F/ 3πd² ANSWER DOWNLOAD EXAMIANS APP
Machine Design The gears are termed as medium velocity gears, if their peripheral velocity is 1-3 m/s 3-15 m/s 30-50 m/s 15-30 m/s 1-3 m/s 3-15 m/s 30-50 m/s 15-30 m/s ANSWER DOWNLOAD EXAMIANS APP
Machine Design The velocity factor for ordinary cut gears operating at velocities up to 12.5 m/s is equal to 4.5/(4.5 + v) 0.75/(0.75 + √v) 3/(3 + v) 6/(6 + v) 4.5/(4.5 + v) 0.75/(0.75 + √v) 3/(3 + v) 6/(6 + v) ANSWER DOWNLOAD EXAMIANS APP
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