Machine Design When a hole of diameter ‘d’ is punched in a metal of thickness 't', then the force required to punch a hole is equal to (where τu = Ultimate shear strength of the material of the plate) π/4 × d² × tτu πd.t.τu π/4 × d².τu t.τu π/4 × d² × tτu πd.t.τu π/4 × d².τu t.τu ANSWER DOWNLOAD EXAMIANS APP
Machine Design In worm, gears, pitch lead angle is The angle between the tangent to the pitch helix and an element of the cylinder The angle between the tangent to the pitch helix and the plane of rotation None of these Half the angle between two inclined faces in axial plane The angle between the tangent to the pitch helix and an element of the cylinder The angle between the tangent to the pitch helix and the plane of rotation None of these Half the angle between two inclined faces in axial plane ANSWER DOWNLOAD EXAMIANS APP
Machine Design When the bearing is subjected to large fluctuations of load and heavy impacts, the bearing characteristic number should be _________ the bearing modulus. 15 times 20 times 5 times 10 times 15 times 20 times 5 times 10 times ANSWER DOWNLOAD EXAMIANS APP
Machine Design In the case of an elastic bar fixed at upper end and loaded by a falling weight at lower end, the shock load produced can be decreased by Increasing the cross-section area of bar Remain unaffected with cross-section area Decreasing the cross-section area of bar Would depend upon other factors Increasing the cross-section area of bar Remain unaffected with cross-section area Decreasing the cross-section area of bar Would depend upon other factors ANSWER DOWNLOAD EXAMIANS APP
Machine Design The expansion joint is mostly used for pipes which carry steam at __________ pressures. High None of these Medium Low High None of these Medium Low ANSWER DOWNLOAD EXAMIANS APP
Machine Design An elastic bar is fixed at the upper end and loaded at the lower end by a falling weight. The shock load produced can be reduced by Decreasing the modulus of elasticity of the bar Increasing the length of bar All of these Decreasing the cross-sectional area of the bar Decreasing the modulus of elasticity of the bar Increasing the length of bar All of these Decreasing the cross-sectional area of the bar ANSWER DOWNLOAD EXAMIANS APP
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