State two disadvantages and two advantages of a simple manometer.
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The y form of iron is known as: a) ferrite b) cementite c) perlite d) austenite

Draw the engineering stress-strain curve for (a) bcc; (b) fcc metals and mark important points.

Most leaks in reciprocating air compressors can be detected and minimized by: (clo4) a)-detecting leakage areas using ultrasonic acoustic detector. b)-tightening joints and connections c)-replacing faulty equipment d)-all of the given options