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Machine Design

Machine Design
In a flange coupling, the flanges are coupled together by means of

None of these
Studs
Headless taper bolts
Bolts and nuts

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Machine Design
According to Indian standards, total numbers of fundamental deviations are

10
20
15
25

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Machine Design
18/8 steel contains

18% nickel and 8% vanadium
18% vanadium and 8% nickel
18% chromium and 8% nickel
18% nickel and 8% chromium

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

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Machine Design
In static loading, stress concentration is more serious in

Ductile materials
Elastic materials
Brittle materials
Brittle as well as ductile materials

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Machine Design
The rated life of a bearing varies

Inversely as fourth power of load
Inversely as square of load
Inversely as cube of load
Directly as load

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