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Machine Design

Machine Design
Guest's theory is used for

Brittle materials
Plastic materials
Elastic materials
Ductile materials

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Machine Design
The pipe joint mostly used for pipes carrying water at low pressures is

Spigot and socket joint
Union joint
Socket joint
Nipple joint

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Machine Design
Oil in journal bearing should be applied at the point where load is

Average
Nil or lightest
Maximum
Any one of the above

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Machine Design
Two shafts ‘A’ and ‘B’ under pure torsion are of identical length and identical weight and are made of the same material. The shaft ‘A’ is solid and the shaft ‘B’ is hollow. We can say that

Shaft A is better than shaft B
None of these
Both the shafts are equally good
Shaft B is better than shaft A

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

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Machine Design
The ratio of pitch circle diameter in millimeters to the number of teeth, is called

Circular pitch
Module
None of these
Diametral pitch

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