Which of the following is the most widely used insulating material for steam carrying pipelines ?

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__________________ does not contain copper as an alloying element?

A. Nichrome B. Manganin C. Perminvar D. Monel metal...

Pick out the wrong statemen?

A. Hardening makes the steel more brittle B. High alloy steels contain more than 50% alloying element C. 18/8 stainless steel is a magnetic steel D. Both B. and C....

Chilled iron castings are__________________?

A. Easily machinable B. Soft on surface C. Highly wear resistant D. None of these...

Carbon supply in pack carburising process is in the form of_____________________?

A. Charcoal B. Calcium carbide C. Hydrocarbon oil D. Graphite...

Sherardizing process is used for__________________?

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