Machine Design The efficiency of a riveted joint is equal to Ps /P Pt /P Least of Pt, Ps and Pc/P Pc /P Ps /P Pt /P Least of Pt, Ps and Pc/P Pc /P ANSWER DOWNLOAD EXAMIANS APP
Machine Design When the connected members are very yielding (soft gasket) as compared to the bolt, then the resultant load on the bolt will be equal to the Initial tension or external load, whichever is greater Initial tension External load applied Sum of the initial tension and external load applied Initial tension or external load, whichever is greater Initial tension External load applied Sum of the initial tension and external load applied ANSWER DOWNLOAD EXAMIANS APP
Machine Design Which of the following statement is correct regarding power screws? If the friction angle is less than the helix angle of the screw, then the efficiency will be more than 50% The efficiency of Acme (trapezoidal) thread is less than that of a square thread The efficiency of a self locking screw can not be more than 50% Both (A) and (B) If the friction angle is less than the helix angle of the screw, then the efficiency will be more than 50% The efficiency of Acme (trapezoidal) thread is less than that of a square thread The efficiency of a self locking screw can not be more than 50% Both (A) and (B) 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 = (μθ)n T₁/T₂ = [(1 - μ tanθ)/ (1 + μ tanθ)]n T₁/T₂ = μθ × n T₁/T₂ = [(1 + μ tanθ)/ (1 - μ tanθ)]n T₁/T₂ = (μθ)n T₁/T₂ = [(1 - μ tanθ)/ (1 + μ tanθ)]n T₁/T₂ = μθ × n T₁/T₂ = [(1 + μ tanθ)/ (1 - μ tanθ)]n ANSWER DOWNLOAD EXAMIANS APP
Machine Design The shear plane in case of bolts should Be parallel to axis of bolt Be across threaded portion of shank Never be across the threaded portion Be normal to threaded portion of shank Be parallel to axis of bolt Be across threaded portion of shank Never be across the threaded portion Be normal to threaded portion of shank ANSWER DOWNLOAD EXAMIANS APP
Machine Design Surface endurance limit of gear material is dependent upon its Toughness Brinell hardness number Yield strength Elastic strength Toughness Brinell hardness number Yield strength Elastic strength ANSWER DOWNLOAD EXAMIANS APP
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