Power Engineering 4A - Test Review 2 Correct 100%

An advantage of a packaged, low-pressure tubular or watertube boiler is: Select one: a. Safety due to the low potential energy of the water contained within them b. Its lower initial cost c. Its less critical water treatment requirement d. Its ability to meet load changes due to its heat reserve - ANSWER A What amount of heat must be supplied (per kilogram) to convert saturated water at 375 kPa abs to steam at 375 kPa with a dryness fraction of 96%? Select one: a. 2628.18 kJ/kg b. 2140.8 kJ/kg c. 2048.45 kJ/kg d. 2055.17 kJ/kg e. 2000.4 kJ/kg - ANSWER D If a system of forces is in equilibrium, which of the following statements is true? Select one: a. The total forces to the right equal the total forces to the left b. The system will vibrate c. The system will rotate clockwise d. The system will rotate counter-clockwise - ANSWER A A Class "B" fire can be extinguished by: Select one: a. Lowering the temperature of the burning wood or paper. b. Creating a chain reaction between the molecules of the burning material. c. Smothering the burning liquid. d. Lowering the temperature of the burning liquid. - ANSWER C For a given nominal pipe size, as the wall thickness of the pipe increases, the: Select one: a. Bore of the pipe increases b. Weight of the pipe decreases c. Outside diameter increases d. Inside diameter is reduced - ANSWER D A machine lifts a load of 2kN a distance of 3