Heutztage, wo es viele Exzellente gibt, ist es die beste Überlebungsmethode, Ihre eigene Position zu festigen. Aber es ist doch nicht so einfach. Während die anderen sich bemühen, ihre Berufsfähigkeiten durch die API API-SIEE (Source Inspector Electrical Equipment) Zertifizierungsprüfung zu verbessern, machen Sie keinen Fortschritt und nehmen die Ding einfach so, wie sie sind. Dann werden Sie eliminiert. Um Ihre Position zu festigen, sollen Sie Ihre Berufsfähigkeiten auch durch die API API-SIEE (Source Inspector Electrical Equipment) Zertifizierungsprüfung verbessern und Fortschritt mit den anderen halten. In diesem Mall stehen Sie nicht weit hinter den anderen.
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81. Frage
According to API RP 540, threaded conduit joints for explosionproof connections should be made with at least how many fully engaged threads?
Antwort: B
Begründung:
The correct answer isD. Forexplosionproof threaded conduit joints,API RP 540requires a minimum offive fully engaged threads. This requirement is critical because explosionproof joints are intended tocontain an internal explosionand prevent flame propagation into the surrounding hazardous atmosphere. The threaded path acts as a controlled flame path, cooling and quenching hot gases before they can exit the enclosure or conduit system at an ignition-capable temperature.
If too few threads are engaged, the flame path may be inadequate, reducing the joint's mechanical strength and compromising its ability to contain pressure and hot gases generated by an internal fault or ignition event.
In hazardous locations, this becomes a major safety issue, especially for conduit-connected equipment such asjunction boxes, motors, control panels, and other Class I installations. During source inspection and quality surveillance, the inspector should verify not only that the correct explosionproof fittings are used, but also that the conduit joints are properly assembled with the required thread engagement and in accordance with the governing hazardous-area standard and approved drawings. Therefore, the minimum required number of fully engaged threads isfive, makingoption Dthe verified answer.
82. Frage
According to API 541, prior to mechanical running test, each mounting foot shall be checked for "soft feet." How is this check conducted?
Antwort: A
Begründung:
The correct answer isB. In large motor inspection practice underAPI 541, asoft footcheck is performed to confirm that all motor mounting feet sit properly on the base and that tightening or loosening the hold-down bolts does not distort the motor frame. The accepted method is to first have the mounting bolts tightened, then place adial indicator verticallyat the foot,zero the indicator, and observe the movement when the bolt torque isrelieved or loosened. If the foot lifts or the frame shifts beyond the permitted tolerance, the condition indicates soft foot and must be corrected before the mechanical running test.
This matters because soft foot can introduce frame strain, misalignment, elevated vibration, bearing loading, and unreliable mechanical test results. In source inspection, the purpose is not merely to verify bolt tightness or visible fit-up, but to confirm that the machine is mounted without distortion under actual installed clamping conditions. Option A may reveal a gap but does not fully assess frame movement under bolt load. Option C reverses the usual verification sequence. Option D is inadequate because torque and visual appearance alone do not confirm absence of soft foot.
83. Frage
According to IEEE C57.12.00, a durable, metal, name plate shall be affixed to each transformer by the:
Antwort: C
Begründung:
The correct answer isA, manufacturer. IEEE C57.12.00 requires that each transformer be provided with adurable metal nameplateattached by themanufacturer. This requirement exists because the nameplate is a permanent identification and rating record for the transformer. It contains critical information such as manufacturer identity, serial number, kVA rating, voltage ratings, frequency, impedance, cooling class, temperature rise, and other essential design and operating data. Since this information originates from the transformer design and production records, responsibility for affixing the plate belongs to the manufacturer, not to the owner, purchaser, or inspector.
From an API source inspection perspective, the nameplate is an important verification point during final inspection. The source inspector checks that the plate is present, permanently attached, legible, and consistent with the approved data sheet, purchase order, drawings, and test records. A missing, incorrect, or improperly marked nameplate can create traceability problems and may result in nonconformance. Therefore, the correct party responsible for affixing the durable metal nameplate is themanufacturer, makingAthe verified answer.
84. Frage
Which statement BEST reflects the guide's discussion of process packaged skids?
Antwort: C
85. Frage
According to NFPA 70, the number of bends permitted between pull points for rigid metal conduits RMC shall not be more than:
Antwort: D
Begründung:
The correct answer isB. NFPA 70, which governs installation requirements for electrical raceway systems, limits conduit runs between pull points such as outlet boxes, junction boxes, conduit bodies, or pull boxes tono more than the equivalent of four quarter bends, or 360 degrees total. This rule applies to rigid metal conduit and is intended to ensure that conductors can be installed, pulled, and replaced without excessive mechanical stress or insulation damage.
From a source inspection and quality surveillance perspective, this requirement is important because conduit routing directly affects installation quality, conductor integrity, and maintainability. Excessive bends increase pulling tension and sidewall pressure, making conductor damage more likely during installation. Too many bends can also complicate future maintenance and cable replacement. During inspection of electrical systems, the source inspector verifies that conduit design, fabrication details, and installation-related drawings align with code requirements and do not introduce nonconforming field conditions.
Option A exceeds the code limit. Options C and D introduce bend-radius conditions that do not replace the fundamental NFPA 70 maximum of360 degrees between pull points. Therefore,Bis the verified answer.
86. Frage
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