Engineering, 04.11.2019 22:31 elijahjacksonrp6z2o7
A. explain briefly the four main microstructural mechanisms by which metals are hardened. identify which mechanisms account for the following increases in yield stress (nb there may be more than one): i. pure annealed aluminum: 25 mpa; cold rolled nonāheatātreatable alāmnā mg alloy: 200 mpa ii. pure annealed copper: 20 mpa; cast 60ā40 brass (60% cu, 40% zn): 105 mpa iii. pure annealed iron: 140 mpa; quenched & tempered medium carbon steel: 600 mpa. iv. pure annealed copper: 20mpa; nanocrystalline pure cu: 500 mpa. b. for each of mechanisms (i) ā (iii) in part (a), give other examples of important engineering alloys which exploit these mechanisms.
Answers: 2
Engineering, 03.07.2019 23:20
Two technicians are discussing the intake air temperature (iat) sensor. technician a says that the computer uses the iat sensor as a backup to the engine coolant temperature (ect) sensor. technician b says that the powertrain control module (pcm) will subtract the calculated amount of fuel if the air measures hot. who is correct
Answers: 3
Engineering, 04.07.2019 18:20
For a gate width of 2 m into the paper, determine the force required to hold the gate abc at its location.
Answers: 1
Engineering, 04.07.2019 19:10
With increases in magnification, which of the following occur? a. the field of view decreases. b. the ambient illumination decreases. c. the larger parts can be measured. d. the eyepiece must be raised.
Answers: 1
Engineering, 04.07.2019 19:10
Estimate the change in specific internal energy au and specific enthalpy h from inlet to outlet for ethylene glycol (a liquid) flowing through each of the following devices: (a) a heat exchanger where the glycol temperature increases from 20 Ā°c to 80 Ā°c; (b) a pump operating at about 25 Ā°c and increasing the glycol pressure from 100 kpa to 8 mpa.
Answers: 2
A. explain briefly the four main microstructural mechanisms by which metals are hardened. identify w...
Computers and Technology, 27.01.2020 21:31