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Machine Design

Machine Design
A chain drive transmits __________ power as compared to belt drive.

Same
None of these
More
Less

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Machine Design
A compound cylinder with inner radius 50 mm and outer radius 70 mm is made by shrinking one cylinder on to the other cylinder, the junction radius is 60 mm and the junction pressure is 1.1 N/mm². The maximum hoop stress developed in the inner cylinder is

7.2 N/mm² tension
3.6 N/mm² tension
7.2 N/mm² compression
3.6 N/mm² compression

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Machine Design
The included angle in unified of American National threads is

60°
55°
29°
47°

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Machine Design
A double fillet welded joint with parallel fillet weld of length 'l' and leg 's' is subjected to a tensile force 'P'. Assuming uniform stress distribution, the shear stress in the weld is given by

P/√2.s.l
2P/s.l
√2P/s.l
P/2.s.l

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Machine Design
A spring is used to

Store energy
Measure forces
All of these
Apply forces

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Machine Design
When carbon in the cast iron is principally in the form of graphite, the cast iron will be of

Brown colour
Grey colour
White colour
Yellow colour

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