High Pressure Boiler Design questions with correct answers

Operating voltage for an electrode boiler may be as high as: CORRECT ANSWER-B) 16 000 volts, 30 000 kW A firetube boiler is one which has: CORRECT ANSWER-D) water on the outside of the tubes and the hot gas on the inside of the tubes. The firebox boiler is a _________ pass firetube boiler. CORRECT ANSWER-B) two pass horizontal A device which usually uses air or steam to do its job is the CORRECT ANSWER-D) sootblower Tube stubs welded to drums and headers, which are used for connecting fittings and attachments, are also known as: CORRECT ANSWER-D) nozzles Boiler structural strength must: CORRECT ANSWER-B) be at least equal to the various code requirements. Who must make certain that the welding procedures used by a manufacturer in the fabrication of a boiler are correct? CORRECT ANSWER-D) an authorized inspector A major force, which acts to hold a manhole door in place during boiler operation, is: CORRECT ANSWER-C) pressure within the boiler