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Machine Design

Machine Design
In most machine members, the damping capacity of the material should be

High
Zero
Low
Could be anything

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Machine Design
The relation between the pitch of the chain (p) and pitch circle diameter of the sprocket (D) is given by (where T = Number of teeth on the sprocket)

p = D sin (360°/T)
p = D sin (180°/T)
p = D sin (90°/T)
p = D sin (120°/T)

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

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

Any one of the above
Maximum
Nil or lightest
Average

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

Equal to
Greater than
None of these
Less than

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Machine Design
The square threads are usually found on

Spindles of bench vices
Railway carriage couplings
Feed mechanism of machine tools
Screw cutting lathes

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