Pass Benchmark: 70% (21/30) • Standard: USCG NMC / 46 CFR

USCG General Subjects (Auxiliaries & Systems) (Set 29)

30:00

|

Question 1 of 30

Question Navigator

Correct Incorrect Pending Starred

Question 1 of 30

Indicated high salinity of the distillate discharged from a flash-type distilling plant will be a result of __________.

Browse Questions in Set 29

30 MCQs

#1 Indicated high salinity of the distillate discharged from a flash-type distilling plant will be a result of __________. #2 The absolute pressure maintained in the shell of the salt water feed heater on most flash evaporators used on steam propelled vessels is __________. #3 In the unit illustrated, the feed water temperature is required to be increased to 165°F or greater and must exist at this temperature when leaving __________. Illustration GS-0053 #4 In a two stage flash distilling plant, which of the pumps listed is vented to the shell of the second stage in order to remove vapor from the pump suction? #5 In a jacket water heated submerged tube evaporator, what is the primary factor that determines the rate of scale build-up on the submerged tube bundle? #6 If valve "D" is opened during the normal operation of the distiller shown in the illustration, which of the events listed will occur? Illustration MO-0111 #7 What would happen if valve "25" shown in the illustration, vibrated open with the unit in operation? Illustration MO-0111 #8 What is the function of device "A" shown in the illustration? Illustration MO-0110 #9 The pipe identified by the letter "J" shown in the illustration is __________. Illustration MO-0110 #10 For the operation of the illustrated device, what fluid flow would be expected at the connection labeled "I"? Illustration MO-0110 #11 The heat exchanger plates, used in the device shown in the illustration, are produced from which of the listed materials? Illustration MO-0110 #12 Which of the following is NOT a function of the water supply through item "P" shown in the illustration? Illustration MO-0110 #13 If the demister used in the device shown in the illustration is improperly installed, which of the following will occur? Illustration MO-0110 #14 The primary reason low-pressure evaporators produce distillate more efficiently, and with less scale formation, than high-pressure evaporators is __________. #15 With regard to fresh water generators, what statement concerning brine is true? #16 In the production of fresh water from sea water through a process of heating and cooling, the cooling phase of production is usually called __________. #17 Which of the following fresh water generators has an operating principle that evaporates pre-heated sea water by causing it to undergo a pressure drop into a vacuum? #18 In a flash evaporator, scale as a result of higher than normal temperatures is most likely to occur in the __________. #19 When securing a flash-type evaporator for an extended period of time, you should __________. #20 Item "10" shown in the illustration is used to __________. Illustration MO-0111 #21 Which device is used to prevent over pressurization of the illustrated distiller? Illustration MO-0111 #22 Where is the latent heat obtained to create vapor from the feed water in the illustrated distiller? Illustration MO-0111 #23 Excess brine accumulated in the distiller, shown in the illustration, is removed during normal operation by __________. Illustration MO-0111 #24 Which of the following statements describes the approximate relation between the feed water entering the unit shown in the illustration and brine being removed? Illustration MO-0111 #25 Which of the following statements describes what will occur to the volume of water vapor as it is exposed to the lower temperatures existing in the device labeled "24" shown in the illustration? Illustration MO-0111 #26 Which term represents the change in speed required before a speed control governor will initiate corrective action as the load changes? #27 Overheating of the oil in a hydraulic system can be caused by __________. #28 While starting a hydraulic anchor windlass, you observe that hydraulic pressure does not develop in spite of the proper operation of the electric drive motor. Which of the following actions should you take FIRST to restore pressure? #29 You press start button on the hydraulic power unit shown in the illustration, and the motor does not start. The first thing you should check is the ________. Illustration GS-0161 #30 Overheating of a hydraulic system may be a result of __________.

Question Discussion & Notes

0

Have a doubt, memory trick, or exam update? Share your insights with fellow mariners.

Loading mariner discussions...