When an open coiled helical compression spring is subjected to an axial compressive load, the maximum shear stress induced in the wire is (where D = Mean diameter of the spring coil, d = Diameter of the spring wire, K = Wahl's stress factor, and W = Axial compressive load on the spring)

Machine Design
When an open coiled helical compression spring is subjected to an axial compressive load, the maximum shear stress induced in the wire is (where D = Mean diameter of the spring coil, d = Diameter of the spring wire, K = Wahl's stress factor, and W = Axial compressive load on the spring)

(2WD/ πd3) × K

(8WD/ πd3) × K

(WD/ πd3) × K

(4WD/ πd3) × K

(2WD/ πd3) × K

(8WD/ πd3) × K

(WD/ πd3) × K

(4WD/ πd3) × K

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Machine Design
Coaxing is the procedure of increasing

Metal resistance to corrosion by coating

Metal strength by cycling

Metal hardness by surface treatment

Fatigue limit by over-stressing the metal by successively increasing loadings

Metal resistance to corrosion by coating

Metal strength by cycling

Metal hardness by surface treatment

Fatigue limit by over-stressing the metal by successively increasing loadings

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Machine Design
According to I.B.R., the thickness of the boiler shell should not be less than

7 mm

4 mm

6 mm

5 mm

7 mm

4 mm

6 mm

5 mm

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Machine Design
Guest's theory is used for

Plastic materials

Ductile materials

Brittle materials

Elastic materials

Plastic materials

Ductile materials

Brittle materials

Elastic materials

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Machine Design
The gears are termed as medium velocity gears, if their peripheral velocity is

3-15 m/s

30-50 m/s

1-3 m/s

15-30 m/s

3-15 m/s

30-50 m/s

1-3 m/s

15-30 m/s

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Machine Design
According to Indian standard specifications, a Grey cast iron designated by 'FG 200' means that the

Maximum shear strength is 200 N/mm²

Maximum compressive strength is 200 N/mm²

Minimum tensile strength is 200 N/mm²

Carbon content is 2%

Maximum shear strength is 200 N/mm²

Maximum compressive strength is 200 N/mm²

Minimum tensile strength is 200 N/mm²

Carbon content is 2%

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Machine Design

Machine Design Coaxing is the procedure of increasing

Machine Design According to I.B.R., the thickness of the boiler shell should not be less than

Machine Design Guest's theory is used for

Machine Design The gears are termed as medium velocity gears, if their peripheral velocity is

Machine Design According to Indian standard specifications, a Grey cast iron designated by 'FG 200' means that the

Machine Design
Coaxing is the procedure of increasing

Machine Design
According to I.B.R., the thickness of the boiler shell should not be less than

Machine Design
Guest's theory is used for

Machine Design
The gears are termed as medium velocity gears, if their peripheral velocity is

Machine Design
According to Indian standard specifications, a Grey cast iron designated by 'FG 200' means that the