In the elastic range of a tension test, an extensometer records an extension of 1.207 x 10-2 mm as the load increases by 5 kn. calculate the value of young’s modulus in gpa. the diameter of test piece is 7.98 mm, and the extensometer gauge length is 25 mm.

The temperature of air decreases as it is compressed by an adiabatic compressor. a)- true b)- false

Shafts are machine elements that are used to a) carry axial loads b) direct shear loads c) transmit power d) rotate at constant speed e) none of the above circular and square shafts subjected to the same torque under the same circum behave a) the same way b) almost the same way

Machinery that is a key part of the process and without which the plant or process cannot function is classifed as: (clo4) a)-critical machinery b)-essential machinery c)-general purpose machinery d)-none of the specified options.