A refrigerant sensor that changes conductivity when exposed to refrigerant is:
A) Photoacoustic infrared (PIR). B) Diffusion infrared.
C) Ceramic metal oxide semi-conductor (CMOS). D) Infrared nondispersive (NDIR).
C
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An insulated steam turbine produces 67,000 hp of power. Steam enters the turbine at 2000 psia and 1000°F, with a velocity of 400 ft/s, through a duct with a cross-sectional area of 0.20 ft2. The steam exits with a velocity of 30 ft/s, at a temperature of 420°F. Determine the exit pressure and, if applicable, the exit quality of the steam.
Given: P1 = 2000 psia; T1 = 1000°F; V1 = 400 ft/s; A1 = 0.20 ft2; T2 = 420oF ; V2 = 30 ft/s; W?=67000 hp=47,365 Btu/s; Steam Assume: Q? = 0 (insulated) Also, for a turbine, assume steady-state, steady-flow, single-inlet, single-outlet flow, with ?vPE = 0 What will be an ideal response?
If broadleaf evergreens are not producing flowers, then they are not getting enough sunlight
Indicate whether the statement is true or false
744 is 310% of what number?
A) 2,306.4 B) 240 C) 2.4 D) None of these
The ratio of an object’s density to the density of water is
a. density b. specific volume c. specific gravity d. specific weight