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Machine Design

Machine Design
For tight leakage joints, following type of thread is best suited

Buttress
Metric
Square
NPT (national pipe threads).

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Machine Design
In designing a connecting rod, it is considered like __________ for buckling about Y-axis.

Both ends hinged
One end fixed and the other end hinged
One end fixed and the other end free
Both ends fixed

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Machine Design
The value of Lewis form factor used in design of gears is

All of these
Independent of size of teeth
Dependent on system of teeth
Dependent on number of teeth of a gear

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

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

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Machine Design
In designing thick cylinders, the equation used is

Lame's equation
Clavarinos' equation
All of these
Birnie's equation

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Machine Design
Taper usually provided on cotter is

1 in 5
1 in 40
1 in 24
1 in 10

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