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

2 τ

τ

τ/2

4 τ

2 τ

τ

τ/2

4 τ

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Machine Design
The piston pin bearings in heavy duty diesel engines are

Spherical roller bearings

Needle roller bearings

Tapered roller bearings

Cylindrical roller bearings

Spherical roller bearings

Needle roller bearings

Tapered roller bearings

Cylindrical roller bearings

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Machine Design
Two shafts A and B are made of the same material. The diameter of shaft A is twice as that of shaft B. The power transmitted by the shaft A will be __________ of shaft B.

Sixteen times

Four times

Eight times

Twice

Sixteen times

Four times

Eight times

Twice

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

Acceleration/retardation of masses plus stress due to bending

Axial load plus stress due to bending

Axial load plus stress due to acceleration/retardation

Bending plus stress due to acceleration/retardation

Acceleration/retardation of masses plus stress due to bending

Axial load plus stress due to bending

Axial load plus stress due to acceleration/retardation

Bending plus stress due to acceleration/retardation

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Machine Design
The size of a cam depends upon

Pitch curve

Prime circle

Base circle

Pitch circle

Pitch curve

Prime circle

Base circle

Pitch circle

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Machine Design
For circumferential joint in boilers, the type of joint used is

Butt joint with double cover plate

Any one of the above

Butt joint with single cover plate

Lap joint with one ring overlapping the other

Butt joint with double cover plate

Any one of the above

Butt joint with single cover plate

Lap joint with one ring overlapping the other

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Machine Design

Machine Design The piston pin bearings in heavy duty diesel engines are

Machine Design Two shafts A and B are made of the same material. The diameter of shaft A is twice as that of shaft B. The power transmitted by the shaft A will be __________ of shaft B.

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

Machine Design The size of a cam depends upon

Machine Design For circumferential joint in boilers, the type of joint used is

Machine Design
The piston pin bearings in heavy duty diesel engines are

Machine Design
Two shafts A and B are made of the same material. The diameter of shaft A is twice as that of shaft B. The power transmitted by the shaft A will be __________ of shaft B.

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

Machine Design
The size of a cam depends upon

Machine Design
For circumferential joint in boilers, the type of joint used is