An open coiled helical compression spring 'A' of mean diameter 50 mm is subjected to an axial load ‘W’. Another spring 'B' of mean diameter 25 mm is similar to spring 'A' in all respects. The deflection of spring 'B' will be __________ as compared to spring 'A'.

Machine Design
An open coiled helical compression spring 'A' of mean diameter 50 mm is subjected to an axial load ‘W’. Another spring 'B' of mean diameter 25 mm is similar to spring 'A' in all respects. The deflection of spring 'B' will be __________ as compared to spring 'A'.

One-eighth

One-fourth

One-half

Double

One-eighth

One-fourth

One-half

Double

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Machine Design
When the connected members are very yielding (soft gasket) as compared to the bolt, then the resultant load on the bolt will be equal to the

Sum of the initial tension and external load applied

Initial tension

External load applied

Initial tension or external load, whichever is greater

Sum of the initial tension and external load applied

Initial tension

External load applied

Initial tension or external load, whichever is greater

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Machine Design
When the belt is transmitting maximum power, the belt speed should be (Where, m = mass of belt per meter (kg/m) and Pmax = maximum permissible tension in belt (N))

√(Pmax / 2m)

√(Pmax / 3m)

√(Pmax / m)

√(3m /Pmax)

√(Pmax / 2m)

√(Pmax / 3m)

√(Pmax / m)

√(3m /Pmax)

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Machine Design
The effective stress in wire ropes during normal working is equal to the stress due to

Axial load plus stress due to acceleration/retardation

Acceleration/retardation of masses plus stress due to bending

Axial load plus stress due to bending

Bending plus stress due to acceleration/retardation

Axial load plus stress due to acceleration/retardation

Acceleration/retardation of masses plus stress due to bending

Axial load plus stress due to bending

Bending plus stress due to acceleration/retardation

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Machine Design
The product of the diametral pitch and circular pitch is equal to

1

π

π × number of teeth

1/π

1

π

π × number of teeth

1/π

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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

3.0

3.5

2.5

2.8

3.0

3.5

2.5

2.8

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Machine Design

Machine Design An open coiled helical compression spring 'A' of mean diameter 50 mm is subjected to an axial load ‘W’. Another spring 'B' of mean diameter 25 mm is similar to spring 'A' in all respects. The deflection of spring 'B' will be __________ as compared to spring 'A'.

Machine Design When the connected members are very yielding (soft gasket) as compared to the bolt, then the resultant load on the bolt will be equal to the

Machine Design When the belt is transmitting maximum power, the belt speed should be (Where, m = mass of belt per meter (kg/m) and Pmax = maximum permissible tension in belt (N))

Machine Design The effective stress in wire ropes during normal working is equal to the stress due to

Machine Design The product of the diametral pitch and circular pitch is equal to

Machine Design
An open coiled helical compression spring 'A' of mean diameter 50 mm is subjected to an axial load ‘W’. Another spring 'B' of mean diameter 25 mm is similar to spring 'A' in all respects. The deflection of spring 'B' will be __________ as compared to spring 'A'.

Machine Design
When the connected members are very yielding (soft gasket) as compared to the bolt, then the resultant load on the bolt will be equal to the

Machine Design
When the belt is transmitting maximum power, the belt speed should be (Where, m = mass of belt per meter (kg/m) and Pmax = maximum permissible tension in belt (N))

Machine Design
The effective stress in wire ropes during normal working is equal to the stress due to

Machine Design
The product of the diametral pitch and circular pitch is equal to