A closely coiled helical spring is acted upon by an axial force. The maximum shear stress developed in the spring is τ. The half of the length of the spring if cut off and the remaining spring is acted upon by the same axial force. The maximum shear stress in the spring in new condition will be

Machine Design
A closely coiled helical spring is acted upon by an axial force. The maximum shear stress developed in the spring is τ. The half of the length of the spring if cut off and the remaining spring is acted upon by the same axial force. The maximum shear stress in the spring in new condition will be

τ/2

τ

2 τ

4 τ

τ/2

τ

2 τ

4 τ

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Machine Design
If the centre distance of the mating gears having involute teeth is increased, then the pressure angle

Decreases

None of these

Increases

Remains unchanged

Decreases

None of these

Increases

Remains unchanged

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Machine Design
A tube has the following advantage over pipe

Lighter and easier to handle

Smoother inside walls

Greater shock absorption

All of these

Lighter and easier to handle

Smoother inside walls

Greater shock absorption

All of these

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Machine Design
For applications involving high stresses in one direction only the following type of thread would be best suited

Square thread

Buttress thread

Acme thread

ISO metric thread

Square thread

Buttress thread

Acme thread

ISO metric thread

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Machine Design
When a machine member is subjected to torsion, the torsional shear stress set up in the member is

Zero at the centroidal axis and maximum at the outer surface of the member

Zero at both the centroidal axis and outer surface of the member

Maximum at the centroidal axis and zero at the outer surface of the member

Maximum at both the centroidal axis and outer surface of the member

Zero at the centroidal axis and maximum at the outer surface of the member

Zero at both the centroidal axis and outer surface of the member

Maximum at the centroidal axis and zero at the outer surface of the member

Maximum at both the centroidal axis and outer surface of the member

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Machine Design
In helical gears, the distance parallel to the axis, between similar faces of adjacent teeth, is called

Diametral pitch

Normal pitch

Axial pitch

Module

Diametral pitch

Normal pitch

Axial pitch

Module

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Machine Design

Machine Design If the centre distance of the mating gears having involute teeth is increased, then the pressure angle

Machine Design A tube has the following advantage over pipe

Machine Design For applications involving high stresses in one direction only the following type of thread would be best suited

Machine Design When a machine member is subjected to torsion, the torsional shear stress set up in the member is

Machine Design In helical gears, the distance parallel to the axis, between similar faces of adjacent teeth, is called

Machine Design
If the centre distance of the mating gears having involute teeth is increased, then the pressure angle

Machine Design
A tube has the following advantage over pipe

Machine Design
For applications involving high stresses in one direction only the following type of thread would be best suited

Machine Design
When a machine member is subjected to torsion, the torsional shear stress set up in the member is

Machine Design
In helical gears, the distance parallel to the axis, between similar faces of adjacent teeth, is called