Power Engineering 4th Class - Unit A11 Questions and Answers 100% Pass

Power Engineering 4th Class - Unit A11 Questions and Answers 100% Pass (4-051-2.4) An early shell-type boiler had ___________ as its heating surface: Select one: a. Only the lower part of the shell b. The lower part of the shell and the rear plate or head c. The total shell side and one end plate or head d. Two passes along the shell or drum a (4-052-3.3) An advantage of a vertical tubeless firetube boiler is that it requires: Select one: a. Relatively small floor space b. No fuel handling equipment c. Less fuel for combustion d. Very little water treatment a (4-53-3.1) Large steam generators: Select one: a. Are bottom supported b. Are fired by pulverized coal only c. Have poor water circulation d. Are of the water tube type d (4-53-4.4) The copper tube tubular heating boiler: Select one: a. Are mostly gas fired b. Generates high pressure steam c. Has the furnace in the upper section d. Is highly susceptible to corrosion a (4-090-1.9) Cast iron boiler capacity: Select one: a. Is very large compared to steel boilers b. Can be increased by simply adding sections c. Cannot be increased once assembly is completed d. Can be increased by increasing section size b (4-052-int.1) To maintain high velocities through all gas passes in a 4-pass firetube boiler, the cross-sectional area of each succeeding pass is: Select one: a. Increased b. Reduced c. Doubled d. Tripled b (4-055-6.3) Manholes are: Select one: a. Installed on all boilers b. Provided for inspection purposes c. Always circular in shape d. Installed on fossil fired boilers only