Machine Design
Which of the following statement is correct for gears?

The pitch circle is always greater than the base circle
The pitch circle diameter is equal to the product of module and number of teeth
All of these
The addendum is less than dedendum

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Machine Design
The creep in the belt is due to

Unequal extensions in the belt due to tight and slack side tensions
Material of belt
Stresses beyond elastic limit of belt material
Effect of temperature on belt

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Machine Design
In an oil lubricated journal bearing, the coefficient of friction between the journal and the bearing

Is maximum at zero speed and decreases monotonically with increase in speed
Remains constant at all speeds
Is minimum at zero speed and increases monotonically with increase in speed
Becomes minimum at an optimum speed and then increases with further increase in speed

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