A shaft is subjected to a maximum bending stress of 80 N/mm² and maximum shearing stress equal to 30 N/mm² at a particular section. If the yield point in tension of the material is 280 N/mm² and the maximum shear stress theory of failure is used, then the factor of safety obtained will be

Machine Design
A shaft is subjected to a maximum bending stress of 80 N/mm² and maximum shearing stress equal to 30 N/mm² at a particular section. If the yield point in tension of the material is 280 N/mm² and the maximum shear stress theory of failure is used, then the factor of safety obtained will be

2.8

2.5

3.5

3.0

2.8

2.5

3.5

3.0

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Machine Design
The dedendum is the radial distance from the

Pitch circle to the bottom of a tooth

Top of a tooth to the bottom of a tooth

Pitch circle to the top of a tooth

Addendum circle to the clearance circle

Pitch circle to the bottom of a tooth

Top of a tooth to the bottom of a tooth

Pitch circle to the top of a tooth

Addendum circle to the clearance circle

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Machine Design
According to I.B.R., when the thickness of boiler shell (t) is greater than 8 mm, then the diameter of rivet hole (d) is obtained by

None of these

Equating tearing resistance of the plate to the crushing resistance of the rivets

Equating tearing resistance of the plate to the shearing resistance of the rivets

Equating shearing resistance to the crushing resistance of the rivets

None of these

Equating tearing resistance of the plate to the crushing resistance of the rivets

Equating tearing resistance of the plate to the shearing resistance of the rivets

Equating shearing resistance to the crushing resistance of the rivets

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Machine Design
If P1 and P2 are the tight and slack side tensions in the belt, then the initial tension Pi (according to Barth) will be equal to (Where, Pc is centrifugal tension)

[⅟₂ × (P1 + P2)] + Pc

[(√P1 + √P2)/2]²

⅟₂× (P1 + P2)

P1 + P2

[⅟₂ × (P1 + P2)] + Pc

[(√P1 + √P2)/2]²

⅟₂× (P1 + P2)

P1 + P2

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Machine Design
The material commonly used for crane hooks is

Aluminium

Cast iron

Mild steel

Wrought iron

Aluminium

Cast iron

Mild steel

Wrought iron

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Machine Design
Crushing resistance required to crush the rivet per pitch length is

(p - d) t.σc

n.d.t.σc

p.t.σc

p.d.σc

(p - d) t.σc

n.d.t.σc

p.t.σc

p.d.σc

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Machine Design

Machine Design The dedendum is the radial distance from the

Machine Design According to I.B.R., when the thickness of boiler shell (t) is greater than 8 mm, then the diameter of rivet hole (d) is obtained by

Machine Design If P1 and P2 are the tight and slack side tensions in the belt, then the initial tension Pi (according to Barth) will be equal to (Where, Pc is centrifugal tension)

Machine Design The material commonly used for crane hooks is

Machine Design Crushing resistance required to crush the rivet per pitch length is

Machine Design
The dedendum is the radial distance from the

Machine Design
According to I.B.R., when the thickness of boiler shell (t) is greater than 8 mm, then the diameter of rivet hole (d) is obtained by

Machine Design
If P1 and P2 are the tight and slack side tensions in the belt, then the initial tension Pi (according to Barth) will be equal to (Where, Pc is centrifugal tension)

Machine Design
The material commonly used for crane hooks is

Machine Design
Crushing resistance required to crush the rivet per pitch length is