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Machine Design

Machine Design
The cross-section of the arm of a bell crank lever is

Rectangular
Elliptical
I-section
Any one of these

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Machine Design
For hardening alloy steels and high speed steels, they are heated to

1100 to 1300°C
700 to 900°C
1300 to 1500°C
500 to 600°C

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Machine Design
Rankine Gordon formula for buckling is valid for

Short and long column
Long column
Very long column
Short column

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Machine Design
The product of the diametral pitch and circular pitch is equal to

π
π × number of teeth
1/π
1

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Machine Design
The largest diameter of an external or internal screw thread is known as

Pitch diameter
None of these
Major diameter
Minor diameter

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Machine Design
The maximum normal stress theory is used for

Ductile materials
Brittle materials
Plastic materials
Non-ferrous materials

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