Machine Design In worm, gears, pitch lead angle is Half the angle between two inclined faces in axial plane The angle between the tangent to the pitch helix and the plane of rotation None of these The angle between the tangent to the pitch helix and an element of the cylinder Half the angle between two inclined faces in axial plane The angle between the tangent to the pitch helix and the plane of rotation None of these The angle between the tangent to the pitch helix and an element of the cylinder ANSWER DOWNLOAD EXAMIANS APP
Machine Design The usual proportion for the width of key is (where d = Diameter of shaft or diameter of hole in the hub) d/8 d/2 d/6 d/4 d/8 d/2 d/6 d/4 ANSWER DOWNLOAD EXAMIANS APP
Machine Design I.S. specifies following total number of grades of tolerances 18 22 20 16 18 22 20 16 ANSWER DOWNLOAD EXAMIANS APP
Machine Design If the centre distance of the mating gears having involute teeth is varied within limits, the velocity ratio Decreases Increases None of these Remains unchanged Decreases Increases None of these Remains unchanged ANSWER DOWNLOAD EXAMIANS APP
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) 4μ sinθ/(2θ + sin 2θ) 4μ sinθ/(θ + sinθ) μ sinθ/(2θ + sin 2θ) 2μ sinθ/(θ + sinθ) 4μ sinθ/(2θ + sin 2θ) 4μ sinθ/(θ + sinθ) μ sinθ/(2θ + sin 2θ) 2μ sinθ/(θ + sinθ) ANSWER DOWNLOAD EXAMIANS APP
Machine Design When the belt is transmitting maximum power, the belt speed should be(Where, m = mass of belt per meter (kg/m) and Pmax = maximum permissible tension in belt (N)) √(Pmax / m) √(Pmax / 2m) √(3m /Pmax) √(Pmax / 3m) √(Pmax / m) √(Pmax / 2m) √(3m /Pmax) √(Pmax / 3m) ANSWER DOWNLOAD EXAMIANS APP
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