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Machine Design

Machine Design
The ratio of endurance limit in shear to the endurance limit in flexure is

0.5
0.33
0.55
0.4

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Machine Design
The notch angle of the Izod impact test specimen is

20°
45°
10°
30°

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Machine Design
The dedendum circle diameter is equal to (where φ = Pressure angle)

Addendum circle diameter × cosφ
Clearance circle diameter × cosφ
Pitch circle diameter × cosφ
Pitch circle diameter × sinφ

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Machine Design
The width of the pulley should be __________ width of the belt.

Less than
Greater than
None of these
Equal to

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Machine Design
A shaft coupling should

Transmit full power of the shaft
Hold the shafts in perfect alignment
All of these
Be easy to connect or disconnect

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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
7.5 kN
10.6 kN

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