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Machine Design

Machine Design
The material commonly used for machine tool bodies is

Mild steel
Brass
Aluminium
Cast iron

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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))

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

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Machine Design
Which of the following is an anti-friction bearing?

Needle bearing
Pedestal bearing
Collar bearing
Journal bearing

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Machine Design
A universal coupling is used to connect two shafts

Whose axes intersect at a small angle
Which are not in exact alignment
Which are perfectly aligned
Have lateral misalignment

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Machine Design
In order to permit the thermal expansion/contraction of tubing, it should be

Honed
Flared
Bent
Crimped

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Machine Design
A double strap butt joint (with equal straps) is

Always in single shear
Always in double shear
Any one of these
Either in single shear or double shear

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