4A Unit 11 Questions and Answers Rated A+

4A Unit 11 Questions and Answers Rated A+ (4-055-8.1) In a bottom-supported boiler, the steam drum is usually: Select one: a. Placed between the centre line of the unit b. Supported by piers c. Supported by the water tubes d. Supported by an overhead girder arrangement c. Supported by the water tubes (4-054-1.16) The electrode type boiler: Select one: a. Requires water that conducts electricity b. Utilizes bundles of electric elements c. Must operate at very constant pressure d. Requires a steady load a. Requires water that conducts electricity (4-051-1.33) When part of firetube boilers, heads are commonly called what ? Select one: a. End plates b. Plates c. Tube sheets d. Heads c. Tube sheets (4-055-1.3) Firetube boilers have their tubes fixed into flat steel plates, known as: Select one: a. Shells b. Drums c. Headers d. Tube sheets d. Tube sheets (4-054-1.13) Electric boilers: Select one: a. Are economical to operate b. Do not need gauge glasses c. Do not need a chimney d. Are low pressure boilers only c. Do not need a chimney The boiler MAWP is determined: Select one: a. According to the customers needs b. After the hydrostatic test c. at the welding stage d. at the design stage d. at the design stage (4-051-1.8) A water leg is found on a/an ____________ boiler. Select one: a. HRT b. Locomotive c. Watertube d. Scotch b. Locomotive (4-054-1.7) One type of electrode boiler depends on the electrodes being submerged in water in order to generate steam.What safety device is not required on this type of electric boiler? Select one: