Pass Benchmark: 70% • Standard: USCG NMC / 46 CFR
USCG Engine General (Supplementary) (Set 12)
30:00
|Question 1 of 30
Question Navigator
Correct Incorrect Pending Starred
Question 1 of 30
For soft scale deposits on the inside of the tubes of a seawater-cooled shell-and-tube heat exchanger, what is typically the preferred method of cleaning?
Browse Questions in Set 12
30 MCQs #1 For soft scale deposits on the inside of the tubes of a seawater-cooled shell-and-tube heat exchanger, what is typically the preferred method of cleaning? #2 For stubborn, hard scale deposits on the inside of the tubes of a seawater-cooled shell-and-tube heat exchanger, what is typically the preferred method of cleaning? #3 For removal of sludge from in the inside of the shell of a fuel oil heater or lube oil cooler, what is typically the preferred method of cleaning? #4 What would be the most likely indication that a plate type jacket water cooler had an internal leak permitting mixing of the two fluids? #5 Which saltwater-cooled heat exchanger arrangement and location would be MOST problematic in terms of keeping the seawater side filled? #6 Which saltwater-cooled heat exchanger arrangement and location would be the LEAST likely to become air-bound on the seawater side? #7 How may a suspected tube leak on a shell-and-tube jacket water cooler most easily be located? #8 What would be the most likely indication that a shell-and-tube lube oil cooler had in internal leak permitting mixing of the two fluids? #9 Besides a visual inspection upon disassembly, what method can be used to check for suspected leakage through a heat transfer plate of a plate type heat exchanger? #10 If a fluorescent dye penetrant and ultra-violet light are used for leak detection on a heat exchanger, what would be the indication of a confirmed leak? #11 An arrow superimposed on a hydraulic graphic symbol at approximately 45°, as shown in the illustrated figures A, B, and C, indicates the component __________. GS-0068 #12 The illustrated hydraulic pump graphic symbol is used to depict a/an __________. GS-0097 #13 Item "B" shown in the illustrated hydraulic circuit is used to __________. GS-0103 #14 Item "E" shown in the illustration is used in the hydraulic circuit as __________. GS-0103 #15 The hydraulic tubing installation shown as figure "D" is INCORRECT and will probably leak when in operation because the tubing __________. GS-0065 #16 Of the hydraulic tubing fittings illustrated, the flared fitting for high pressure use is represented by figure __________. GS-0100 #17 A flare-type tubing connector is used in the hydraulic hatch-cover system and has developed a slight leak. To stop the leak you should __________. #18 Which of the following components listed is shown in the illustration? GS-0041 #19 The device shown in the illustration is commonly known as a/an __________. GS-0071 #20 The device illustrated would be best used as a __________. GS-0058 #21 If the flow rate and pressurized oil from a variable capacity pump were supplied to the device illustrated, the __________. GS-0058 #22 A two stage hydraulic pump unit is used to __________. #23 A hydraulic system flow-control circuit is shown in the illustration and is known as a __________. GS-0105 #24 Which of the following statements will be true if the position of the manual control lever, shown in the illustration, remains unchanged after the pump is placed on stroke. Illustration GS-0039 #25 A variable displacement pump is fitted with the illustrated device, the discharge flow rate will be reduced as described by which of the following statements? Illustration GS-0040 #26 One function of a replenishing pump installed in many pressure-closed hydraulic systems, is to supply fluid flow to __________. #27 Compensated flow control, or constant flow valves are used in hydraulic systems to __________. #28 Which of the valves listed is NOT considered to be a hydraulic system directional control valve? #29 The counter balance valve (5) in the winch circuit shown in the illustration ________. GS-0161 #30 The purpose of a restrictor valve, as it is used in a hydraulic hatch cover system, is to __________.
Question Discussion & Notes
0Have a doubt, memory trick, or exam update? Share your insights with fellow mariners.
Loading mariner discussions...