Machine Design For a shoe brake, the equivalent coefficient of friction is equal to (where μ = Actual coefficient of friction, and θ = Semi-block angle) μ sinθ/(2θ + sin 2θ) 4μ sinθ/(2θ + sin 2θ) 4μ sinθ/(θ + sinθ) 2μ sinθ/(θ + sinθ) μ sinθ/(2θ + sin 2θ) 4μ sinθ/(2θ + sin 2θ) 4μ sinθ/(θ + sinθ) 2μ sinθ/(θ + sinθ) ANSWER DOWNLOAD EXAMIANS APP
Machine Design Allen bolts are Designed for shock load Self locking bolts Used in aircraft application Provided with hexagonal depression in head Designed for shock load Self locking bolts Used in aircraft application Provided with hexagonal depression in head ANSWER DOWNLOAD EXAMIANS APP
Machine Design Brittle coating technique is used for Experimental stress analysis Protecting metal against corrosion Protecting metal against wear and tear Determining brittleness Experimental stress analysis Protecting metal against corrosion Protecting metal against wear and tear Determining brittleness ANSWER DOWNLOAD EXAMIANS APP
Machine Design A pressure vessel is said to be a thick shell, if the ratio of wall thickness to its diameter is Equal to 1/10 Greater than 1/10 Less than 1/10 None of these Equal to 1/10 Greater than 1/10 Less than 1/10 None of these ANSWER DOWNLOAD EXAMIANS APP
Machine Design The centrifugal tension in the belt Decreases the power transmitted Increases the power transmitted Is equal to maximum tension on the belt Has no effect on the power transmitted Decreases the power transmitted Increases the power transmitted Is equal to maximum tension on the belt Has no effect on the power transmitted ANSWER DOWNLOAD EXAMIANS APP
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) t.τu π/4 × d².τu π/4 × d² × tτu πd.t.τu t.τu π/4 × d².τu π/4 × d² × tτu πd.t.τu ANSWER DOWNLOAD EXAMIANS APP
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