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

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

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Manufacturing And Production Technology
The strength of a brazed joint

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

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