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 + (b/2a)]

σ [1 + (2a/b)]

σ [1 + (3a/b)]

σ [1 + (b/3a)]

σ [1 + (b/2a)]

σ [1 + (2a/b)]

σ [1 + (3a/b)]

σ [1 + (b/3a)]

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Machine Design
The velocity factor for very accurately cut and ground metallic gears operating at velocities upto __________ are equal to 6/(6 + v).

20 m/s

10 m/s

12.5 m/s

15 m/s

20 m/s

10 m/s

12.5 m/s

15 m/s

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Machine Design
In case of pressure vessels having closed ends, the fluid pressure induces

Circumferential stress

Longitudinal stress

Shear stress

None of these

Circumferential stress

Longitudinal stress

Shear stress

None of these

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Machine Design
A pressure vessel is said to be a thick shell, if the ratio of wall thickness to its diameter is

Equal to 1/10

Less than 1/10

None of these

Greater than 1/10

Equal to 1/10

Less than 1/10

None of these

Greater than 1/10

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Machine Design
In the case of an elastic bar fixed at upper end and loaded by a falling weight at lower end, the shock load produced can be decreased by

Would depend upon other factors

Decreasing the cross-section area of bar

Remain unaffected with cross-section area

Increasing the cross-section area of bar

Would depend upon other factors

Decreasing the cross-section area of bar

Remain unaffected with cross-section area

Increasing the cross-section area of bar

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Machine Design
The centre to centre distance between two consecutive rivets in a row, is called

Diagonal pitch

Margin

Pitch

Back pitch

Diagonal pitch

Margin

Pitch

Back pitch

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Machine Design

Machine Design The velocity factor for very accurately cut and ground metallic gears operating at velocities upto __________ are equal to 6/(6 + v).

Machine Design In case of pressure vessels having closed ends, the fluid pressure induces

Machine Design A pressure vessel is said to be a thick shell, if the ratio of wall thickness to its diameter is

Machine Design In the case of an elastic bar fixed at upper end and loaded by a falling weight at lower end, the shock load produced can be decreased by

Machine Design The centre to centre distance between two consecutive rivets in a row, is called

Machine Design
The velocity factor for very accurately cut and ground metallic gears operating at velocities upto __________ are equal to 6/(6 + v).

Machine Design
In case of pressure vessels having closed ends, the fluid pressure induces

Machine Design
A pressure vessel is said to be a thick shell, if the ratio of wall thickness to its diameter is

Machine Design
In the case of an elastic bar fixed at upper end and loaded by a falling weight at lower end, the shock load produced can be decreased by

Machine Design
The centre to centre distance between two consecutive rivets in a row, is called