Manufacturing And Production Technology
Which of the following statement is wrong about ultrasonic machining?

It removes large amount of material
It cuts materials at very slow speeds
It is best suited for machining hard and brittle materials.
It produces good surface finish

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Manufacturing And Production Technology
The strength of a brazed joint

Increases with increase in gap between the two joining surfaces
Decreases up to certain gap between the two joining surfaces beyond which it increases
Increases up to certain gap between the two joining surfaces beyond which it decreases
Decreases with increase in gap between the two joining surfaces

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