A plate with an elliptical hole in the centre, with semi-major axis (a) perpendicular to the direction of loading and semi-minor axis (b) along the direction of loading, is subjected to a pull P. The maximum stress induced at the edge of the hole is equal to (where σ = Stress for a plate with no hole i.e. nominal stress)

Machine Design
A plate with an elliptical hole in the centre, with semi-major axis (a) perpendicular to the direction of loading and semi-minor axis (b) along the direction of loading, is subjected to a pull P. The maximum stress induced at the edge of the hole is equal to (where σ = Stress for a plate with no hole i.e. nominal stress)

σ [1 + (3a/b)]

σ [1 + (b/2a)]

σ [1 + (b/3a)]

σ [1 + (2a/b)]

σ [1 + (3a/b)]

σ [1 + (b/2a)]

σ [1 + (b/3a)]

σ [1 + (2a/b)]

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Machine Design
According to I.B.R., the factor of safety of riveted joint should not be less than

3

1

4

2

3

1

4

2

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Machine Design
A thin spherical shell of internal diameter d is subjected to an internal pressure p. If V is the storage capacity of shell, then its diameter will be

(6V/ π)3

(6V/ π)1/2

(6V/ π)2

(6V/ π)1/3

(6V/ π)3

(6V/ π)1/2

(6V/ π)2

(6V/ π)1/3

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Machine Design
In an oil lubricated journal bearing, the coefficient of friction between the journal and the bearing

Is maximum at zero speed and decreases monotonically with increase in speed

Is minimum at zero speed and increases monotonically with increase in speed

Remains constant at all speeds

Becomes minimum at an optimum speed and then increases with further increase in speed

Is maximum at zero speed and decreases monotonically with increase in speed

Is minimum at zero speed and increases monotonically with increase in speed

Remains constant at all speeds

Becomes minimum at an optimum speed and then increases with further increase in speed

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Machine Design
In a turnbuckle, if one of the rods has left hand threads, then the other rod will have

Pointed threads

Left hand threads

Right hand threads

Multiple threads

Pointed threads

Left hand threads

Right hand threads

Multiple threads

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Machine Design
A V-belt designated as B 4430 LP has

4430 mm as diameter of large pulley

4430 mm as nominal pitch length

4430 mm as diameter of small pulley

4430 mm as centre distance between pulleys

4430 mm as diameter of large pulley

4430 mm as nominal pitch length

4430 mm as diameter of small pulley

4430 mm as centre distance between pulleys

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Machine Design

Machine Design According to I.B.R., the factor of safety of riveted joint should not be less than

Machine Design A thin spherical shell of internal diameter d is subjected to an internal pressure p. If V is the storage capacity of shell, then its diameter will be

Machine Design In an oil lubricated journal bearing, the coefficient of friction between the journal and the bearing

Machine Design In a turnbuckle, if one of the rods has left hand threads, then the other rod will have

Machine Design A V-belt designated as B 4430 LP has

Machine Design
According to I.B.R., the factor of safety of riveted joint should not be less than

Machine Design
A thin spherical shell of internal diameter d is subjected to an internal pressure p. If V is the storage capacity of shell, then its diameter will be

Machine Design
In an oil lubricated journal bearing, the coefficient of friction between the journal and the bearing

Machine Design
In a turnbuckle, if one of the rods has left hand threads, then the other rod will have

Machine Design
A V-belt designated as B 4430 LP has