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Machine Design

Machine Design
For maximum power, the velocity of the belt will be

√(T/2m)
√(T/3m)
√(T/m)
None of these

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Machine Design
The diameter of knuckle pin in a knuckle joint is usually taken as (where d = Diameter of the rod)

0.8 d
1.2 d
d
0.5 d

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Machine Design
The draw of cotter need not exceed

5 mm
3 mm
20 mm
10 mm

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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

15 kN
22.5 kN
10.6 kN
7.5 kN

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Machine Design
Fibrous fracture occurs in

Hard material
Brittle material
Elastic material
Ductile material

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Machine Design
The efficiency of a square threaded screw is maximum if the helix angle is equal to(Where φ = Angle of friction)

45° - φ/2
90° - φ
45° - φ
45° + φ/2

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