Astudent claims that titanium is the strongest material to fracture. based on this interaction, which evidence would best support the student's claim?

a. titanium takes the longest time to reach fracture.
b. titanium has the highest fracture stress value.
c. titanium deforms the least before fracture.
d. titanium increases its fracture strength as the load increases.

Air is to be cooled in the evaporator section of a refrigerator by passing it over a bank of 0.8-cm-outer-diameter and 0.4-m-long tubes inside which the refrigerant is evaporating at -20°c. air approaches the tube bank in the normal direction at 0°c and 1 atm with a mean velocity of 4 m/s. the tubes are arranged in-line with longitudinal and transverse pitches of sl- st 1.5 cm. there are 30 rows in the flow direction with 15 tubes in each row. determine (a) the refrigeration capacity of this system and (b) pressure drop across the tube bank. evaluate the air properties at an assumed mean temperature of -5°c and 1 atm. is this a good assumption?

Condition monitoring is a major component of. (clo4) a)- predictive maintenance. b)-preventive maintenance c)-proactive maintenance d)-reactive maintenance.

What is the heat treatment of metals? what is the benefit of it? why and how it's useful? answer in details, do not write by hand.