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

USCG General Subjects (Auxiliaries & Systems) (Set 5)

30:00

|

Question 1 of 30

Question Navigator

Correct Incorrect Pending Starred

Question 1 of 30

To set the dividers to the proper radius, you should use a __________.

Browse Questions in Set 5

30 MCQs

#1 To set the dividers to the proper radius, you should use a __________. #2 The center head of a combination square set is used to __________. #3 Which of the instruments listed is used to measure the gauge of a piece of sheet metal? #4 To measure the circumference of a piece of pipe, you should use a __________. #5 A metal scribe commonly found on a Combination Square measuring tool should only be used to __________. #6 A dial indicator is used to measure __________. #7 To get an accurate measurement using a 12 inch machinist's steel rule, you should measure __________. #8 All portable electric tools should have a ground connection to prevent __________. #9 A grinding wheel is trued with a __________. #10 A coolant is usually used when cutting metal in a power hacksaw to prevent the __________. #11 Which practices should be followed at all times when using an electric grinding machine? #12 The blade for a power hacksaw should be installed with the teeth __________. #13 Air leakage between the shaft and stuffing box packing in a centrifugal pump is prevented by __________. #14 The function of seal cages, or lantern rings installed in the centrifugal pump stuffing boxes, is to __________. #15 Permanent centrifugal pump shaft damage due to erosion, corrosion, and wear at the stuffing box is usually prevented by __________. #16 The pressure of a liquid leaving the pump can be referred to as the __________. #17 Which of the following terms is used to identify the pressure of a liquid entering a centrifugal pump? #18 A pump is defined as a device that __________. #19 The basic function of the centrifugal pump impeller is to __________. #20 Which of the following statements is true concerning centrifugal pumps? #21 When repacking a stuffing box fitted with a lantern ring, which of the following precautions should be observed? #22 A centrifugal pump gradually develops insufficient discharge pressure. What corrective action is required? #23 When renewing spiral packing in a centrifugal pump stuffing box, after the packing is firmly seated, the packing gland nuts should be __________. #24 What should be done if localized scoring is discovered on a pump shaft sleeve during routine maintenance inspection? #25 Why should the use of metallic or semi-metallic packing hooks or pullers be avoided on bronze or brass shafts, rods, plungers, or sleeves? #26 To prevent overheating and scoring of the shaft after repacking the stuffing box, which of the following procedures should be carried out? #27 A pump shaft that is bent or distorted should normally be __________. #28 Excessive air leakage into the suction side of a centrifugal pump would be indicated by which of the following operational problems? #29 Pitting in the suction areas of a centrifugal pump bronze impeller is usually caused by __________. #30 Reduced capacity, accompanied by vibration and noise at the suction of a centrifugal pump, results from cavitation in the fluid being pumped. Cavitation describes the formation of __________.

Question Discussion & Notes

0

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

Loading mariner discussions...