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Machine Design

Machine Design
In a flange coupling, the bolts are subjected to

Shear stress
Compressive stress
None of these
Tensile stress

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Machine Design
The stress which vary from a minimum value to a maximum value of the same nature (i.e. tensile or compressive) is called

Repeated stress
Fluctuating stress
Alternating stress
Yield stress

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Machine Design
In a marine flange coupling, the pitch circle diameter of bolts is taken as

2 d
1.6 d
2.5 d
1.2 d

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Machine Design
For steel, the ultimate strength in shear as compared to ultimate strength in tension is

43834
43864
43832
43833

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Machine Design
When the belt is transmitting maximum power, the belt speed should be (Where, m = mass of belt per meter (kg/m) and Pmax = maximum permissible tension in belt (N))

√(Pmax / 3m)
√(Pmax / 2m)
√(3m /Pmax)
√(Pmax / m)

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Machine Design
The wear load should be __________ the dynamic load.

Equal to
Greater than
Less than
None of these

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