A powered extraction system is a valuable tool for _____
a. feeding wire electrode
b. removing welding fumes
c. directing shielding gas
d. reducing welding spatter
b
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A gas enters a compressor at T=25 ?C and P=0.2 bar, and exits at T=150 ?C. The compressor operates at steady state, and can be modeled as both adiabatic and reversible. The ideal gas heat capacity of the gas can be considered constant at C_V^*=5R.
A) What is the pressure of the gas leaving the compressor? B) Suppose the entering pressure had been 5 bar instead of 0.2 bar, but everything else were the same. Discuss which (if any) aspects of the solution to part A would still be applicable, and which aspects (if any) would no longer be applicable.
A E-MOSFET operates in the
A) drain mode B) enhancement mode C) follower mode D) restricted mode
The major concern with ammonia refrigerant is:
A) It is much more expensive than halogenated refrigerants. B) It is poisonous and flammable. C) It can only be used with copper, brass, and aluminum. D) Its normal operating pressures are extremely high.
Use a(n) _____ to measure bearing clearance when installing a spherical roller bearing
a. inside micrometer b. vernier caliper c. feeler gauge d. dial bore gauge