Corrosion is a destructive attack on metals

Question:

Corrosion is a destructive attack on metals

A.

Which may be chemical or electrochemical in nature

B.

Which is basically caused by atmospheric air

C.

Which is caused by contact with other metals

D.

At high temperature

Answer» a. Which may be chemical or electrochemical in nature

Note: The above multiple-choice question is for all general and Competitive Exams in India

In press work the dies that perform two or more operations simultaneously, but at different stations are known as

Question:

In press work the dies that perform two or more operations simultaneously, but at different stations are known as

A.

Multi-dies

B.

Simple dies

C.

Compound dies

D.

Die and punch set

Answer» e. Progressive dies

Note: The above multiple-choice question is for all general and Competitive Exams in India