All of the following are factors that affect the efÂfective MARR of a project, except: (choose one)
(a) Project risk
(b) Product selling price
(c) Availability of capital
(d ) Attractiveness of other investment opportunities
(b) Product selling price
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Which type of leak detection involves burning refrigerant?
A. halide B. electronic C. soap bubbles D. ultraviolet light
Air occupies a balloon that has an initial volume of 0.05 m3. Initially, the air has a temperature of 20oC and a pressure of 125 kPa. The air is heated, and the balloon expands until the volume of 0.25 m3. The pressure and volume are related through pVn = constant. Develop a computer program model for analyzing such a process/device. Plot the final temperature of the air, the work done, and the heat transfer for values of n = 1.1, 1.2, 1.3, 1.4, and 1.5.
Given: Air; T1 = 20oC = 293 K; P1 = 1000 kPa; V1 = 0.05 m3; V2 = 0.25 m3; PVn = constant Assume: ?KE = ?PE = 0. The air is an ideal gas with constant specific heats (cv = 0.718 kJ/kg-K; R = 0.287 kJ/kg-K) What will be an ideal response?
What is the airflow through a register with a free area of 72 square inches if the air velocity is 300 feet per minute?
What will be an ideal response?
An npn transitor is biased using collector feedback. Rc = 2.2 k? and Rb = 220 k?. Vcc = 25 V and ? = 250. Solve for the value of base current
A) 3.16 ?A B) 214 ?A C) 7.9 mA D) 31.6 ?A