• The pressure drop across the combustor affects: a. The fuel consumption and power output. It is normally around (2-8) % of the static pressure. b. The fuel consumption since increased by (2-8) %. c. Power output only since it decreases the turbine pressure ratio. d. The power output since it reduces the turbine outlet pressure. . is achieved by passing the cooling air through the porous wall of the gas turbine blade. a. Transpiration cooling. b. Film cooling. C. Impingement cooling. d. Convection cooling. (CC 3 In the shown graph, which statement is correct? HP LP a. HPT power always produces less power than LPT. b. HPT power always produces more power than LPT. HPT power is somețimes less than LPT power. d. HPT and LPT produce same power. T • Reaction turbines usually have higher efficiencies than impulse turbines. However, the amount of work generated by impulse turbines is higher than reaction turbines. a. Correct. b. Incorrect. • The gas turbine cycle combustor outlet temperature profile must be uniform. Any non-uniformity in this temperature profile causes thermal stress on the turbine blades, which could lead to decrease the thermal efficiency. a. Correct. b. Incorrect. FRING

XYZ is deciding whether to weld bicycle frames manually or to purchase a welding robot. If welded manually, investment costs for equipment are only $10,000. The per-unit cost of manually welding a bicycle frame is $50.00 per frame. On the other hand, a robot capable of performing the same work costs $400,000. Robot operating costs including support labor are $40.00 per frame. At what volume would XYZ be indifferent to these alternative methods? *

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