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Machine Design

Machine Design
A cotter joint is used to connect two __________ rods.

Perpendicular
None of these
Co-axial
Parallel

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Machine Design
The bending stress in a curved beam is

None of these
Zero at the point other than centroidal axis
Zero at the centroidal axis
Maximum at the neutral axis

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Machine Design
The permissible stress in the fillet weld is 100 N/mm². The fillet weld has equal leg lengths of 15 mm each. The allowable shearing load on the weldment per cm length of the weld is

10.6 kN
22.5 kN
15 kN
7.5 kN

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Machine Design
In the assembly of pulley, key and shaft

Key is made the weakest
Pulley is made the weakest
Key is made the strongest
All the three are designed for equal strength

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

Butt joint with single cover plate
Any one of the above
Lap joint with one ring overlapping the other
Butt joint with double cover plate

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Machine Design
The smallest diameter of an external or internal screw thread is known as

Pitch diameter
Minor diameter
None of these
Major diameter

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