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Machine Design

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

1.2 d
2.5 d
2 d
1.6 d

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Machine Design
A universal coupling is used to connect two shafts

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

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Machine Design
The piston rod of a steam engine is usually connected to the cross-head by means of

Knuckle joint
Universal joint
Cotter joint
Bolted joint

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Machine Design
The tension on the slack side of the belt is __________ the tension on the tight side of the belt.

Equal to
None of these
Less than
Greater than

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Machine Design
The process which improves the machinability of steels, but lowers the hardness and tensile strength is

Full annealing
Spheroidising
Process annealing
Normalising

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Machine Design
The railway carriage couplings have

Buttress threads
Acme threads
Knuckle threads
Square threads

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