How many classes of levers are there?

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The distance between fulcrum and dead weights is 100mm. Dead weights are of 2945.2N. An effort of 294.52N acts on the other hand. Find the distance between the fulcrum and other end of the lever.

asked Jan 22 in Machine Design by Carter (89.5k points)

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Leverage is the ratio of load arm to effort arm.

asked Feb 2 in Machine Design by Carter (89.5k points)

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A right angled bell-crank is designed to raise a load of 5kN at short arm whose length is 100mm. Also longer arm is of length 500mm. If permissible bearing pressure on pin is 10N/mm² and diameter of the 20mm, find the length of the pin.

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Mechanical advantage is the ratio of effort to load.

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A right angled bell-crank is designed to raise a load of 5kN at short arm whose length is 100mm. Longer arm is of length 500mm. Calculate the reaction or force acting on the fulcrum.

asked Jan 25 in Machine Design by Carter (89.5k points)

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A right angled bell-crank is designed to raise a load of 5kN at short arm whose length is 100mm. Also longer arm is of length 500mm. If permissible bearing pressure on pin is 10N/mm² and diameter of the 20mm, find the shear stress in the pin.

asked Jan 25 in Machine Design by Carter (89.5k points)

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How many modes are there for crack propagation?

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A maximum of how many roads may be connected using a knuckle joint?

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If there are residual stresses in the material, than lower factor of safety is used.

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If compressive yield stress and tensile yield stress are equivalent, then region of safety from maximum principal stress theory is of which shape?

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A curved beam with eccentricity 0.02D is loaded with 1kN.Centroidal radius=4D and inner and outer radii are 3.5D and 4.5D respectively. Area of cross section is 0.8D². Find the dimension D if allowable stress is 110N/mm² and considering combined effect of direct stress and bending stress.

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Which of the following are important parts of knuckle joint?

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For cast iron components, which of the following strength are considered to be the failure criterion?

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A curved beam with eccentricity 0.02D is loaded with 1kN.Centroidal radius=4D and inner and outer radii are 3.5D and 4.5D respectively. Area of cross section is 0.8D². Find the dimension D if allowable stress is 110N/mm².Considering only bending stress.

asked Jan 23 in Machine Design by Carter (89.5k points)

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If any cross section is subjected to direct tensile stress and bending stress, then find the dimension of cross section. Given length & breadth are t and 2t respectively. F=25kN acts on the top fibre of the cross section, M=F x t . Also maximum allowable tensile stress =100N/mm².

asked Jan 23 in Machine Design by Carter (89.5k points)

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A curved beam with eccentricity 0.02D is loaded with 1kN.Centroidal radius=4D and inner and outer radii are 3.5D and 4.5D respectively. Area of cross section is 0.8D². Find the dimension D if allowable stress is 110N/mm² and considering only direct tensile stress.

asked Jan 23 in Machine Design by Carter (89.5k points)

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How many classes of restriction enzymes are there?

asked Feb 7, 2022 in Genetic Engineering by Charlotte (122k points)

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Buckling is elastic instability which leads to sudden large lateral deflection.

asked Feb 2 in Machine Design by Carter (89.5k points)

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If a body is subjected to stresses in xy plane with stresses of 60N/mm² and 80N/mm² acting along x and y axes respectively. Also the shear stress acting is 10N/mm². Find the inclination of the plane in which shear stress is maximal.

asked Feb 2 in Machine Design by Carter (89.5k points)

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The region of safety in maximum shear stress theory contains which of the given shape

asked Feb 2 in Machine Design by Carter (89.5k points)

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The bending stress in a straight beam varies linearly with the distance from neural axis like that in a curved beam.

asked Feb 2 in Machine Design by Carter (89.5k points)

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If a body is subjected to stresses in xy plane with stresses of 60N/mm² and 80N/mm² acting along x and y axes respectively. Also the shear stress acting is 20N/mm²Find the maximum amount of shear stress to which the body is subjected.

asked Jan 27 in Machine Design by Carter (89.5k points)

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