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Source Inspector Electrical Equipment Question and Answers

Source Inspector Electrical Equipment

Last Update Apr 16, 2026
Total Questions : 110

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Questions 1

According to API RP 540, threaded conduit joints for explosionproof connections should be made with at least how many fully engaged threads?

Options:

A.  

2

B.  

3

C.  

4

D.  

5

Discussion 0
Questions 2

What document provides information on design and installation of electrical systems for fixed and floating offshore petroleum facilities for unclassified and Class I, Zone 0, Zone 1 and Zone 2 locations?

Options:

A.  

NFPA 70

B.  

IEEE 841

C.  

API RP 14F

D.  

API RP 14FZ

Discussion 0
Questions 3

Laminations in a motor stator core are used to reduce:

Options:

A.  

AC voltage.

B.  

frequency.

C.  

energy loss.

D.  

DC voltage.

Discussion 0
Questions 4

According to API 541, when specified, shipping preparations shall make the equipment suitable for outdoor storage from the time of shipment for at least:

Options:

A.  

three months.

B.  

six months.

C.  

nine months.

D.  

twelve months.

Discussion 0
Questions 5

According to NETA, for low voltage cables a visual inspection must verify that:

Options:

A.  

color codes comply with IEEE requirements.

B.  

the shield on power cables is properly grounded.

C.  

connections are in accordance with the single-line diagram.

D.  

all cables are connected to terminals via ring tongue lugs.

Discussion 0
Questions 6

According to API 541, exterior surfaces, with the exception of machined surfaces or corrosion resistant material, shall be coated with which of the following?

Options:

A.  

Heavy shipping grease

B.  

Oil soluble rust preservative

C.  

Vendor's standard paint

D.  

Inorganic zinc

Discussion 0
Questions 7

In a Class I hazardous area, what is the maximum distance from an enclosure, containing arcing devices should a conduit seal be located?

Options:

A.  

4 inches 10.16 cm away from the closest union or coupling

B.  

10 inches 25.4 cm

C.  

12 inches 30.48 cm

D.  

18 inches 45.72 cm

Discussion 0
Questions 8

According to the guide definitions, a junction box used within a control building or instrument enclosure may also be referred to as an:

Options:

A.  

interface box

B.  

breaker cubicle

C.  

bus duct

D.  

starter cell

Discussion 0
Questions 9

During transformer inspection, the source inspector should verify that alarm, control, and trip settings on temperature and level indicators are:

Options:

A.  

omitted unless requested by operations

B.  

identical for every transformer rating

C.  

as specified

D.  

determined only by the freight forwarder

Discussion 0
Questions 10

The primary purpose of the source inspection project plan is to provide the:

Options:

A.  

project specific details on how the inspection activities performed will meet the expected quality.

B.  

basis for the risk assessment associated with each specific piece of equipment.

C.  

experience, training and certification record of each source inspector assigned to each supplier/vendor.

D.  

safety and professional conduct policy for the inspector assigned to the supplier/vendor.

Discussion 0
Questions 11

Areas where ignitable concentrations of flammable gases or vapors are present continuously or for long periods of time are classified as:

Options:

A.  

Class I Zone 0.

B.  

Class I Zone 1.

C.  

Class I Division 2.

D.  

Class I Zone 2.

Discussion 0
Questions 12

Before starting surveillance, the source inspector should confirm that the supplier/vendor has:

Options:

A.  

only the latest code editions, regardless of contract requirements

B.  

the most current project documents specified in the engineering design

C.  

only verbal instructions from procurement

D.  

internal procedures but not drawings

Discussion 0
Questions 13

The insulation resistance test uses what type of applied voltage?

Options:

A.  

AC

B.  

DC

C.  

Half-wave pulsating

D.  

Full-wave rectified

Discussion 0
Questions 14

Which switchgear-related item is explicitly identified in the guide table of contents as an inspection topic?

Options:

A.  

Cable tray color coding

B.  

Metering

C.  

Turbine nozzle alignment

D.  

Firewater pump casing hardness

Discussion 0
Questions 15

Final inspection and shipping preparations of switchgear typically consists of verifying all of the following except:

Options:

A.  

all final manufacturing and drawing issues are closed.

B.  

correct engraving of unit and master nameplates.

C.  

visual inspection of packaging requirements.

D.  

all items on the manufacturer's QC checkout are signed off.

Discussion 0
Questions 16

According to NFPA 70, an insulated conductor used within a switchboard or switchgear shall be rated not less than the voltage applied to it and:

Options:

A.  

water proof.

B.  

flame retardant.

C.  

totally enclosed.

D.  

grounded.

Discussion 0
Questions 17

Which MCC feature is specifically listed in the guide as part of design/construction review?

Options:

A.  

Main isolating switch

B.  

Exciter brush rigging

C.  

Conservator diaphragm

D.  

Generator slip rings

Discussion 0
Questions 18

According to API 541, totally enclosed machines TEFC, TEPV, TEWAC, and TEAAC are equipped with which of the following?

Options:

A.  

Low-point drain

B.  

Heat exchanger cooling fan

C.  

Bearing RTDs

D.  

Surge protectors

Discussion 0
Questions 19

What is an advantage of the Insulation Resistance test?

Options:

A.  

It is non-destructive in nature.

B.  

It is not affected by higher moisture content in the air.

C.  

It is not affected by increases in joint temperature.

D.  

It can be conducted above the breakdown voltage of the insulation.

Discussion 0
Questions 20

Which edition of industry codes and standards applies to the equipment being inspected?

Options:

A.  

The latest edition of the industry standard

B.  

The edition found at the point of use

C.  

The edition supplied by the inspection agency

D.  

The edition specified in the engineering design

Discussion 0
Questions 21

According to NFPA 70, the number of bends permitted between pull points for rigid metal conduits RMC shall not be more than:

Options:

A.  

the equivalent of six quarter bends.

B.  

the equivalent of four quarter bends 360 degrees total.

C.  

four bends provided the radii is less than 5 times the conduit diameter.

D.  

four bends provided the bend radii is at least 10 times the conduit diameter for conduit greater than 3/4 inch 19 mm.

Discussion 0
Questions 22

According to API 541, for the bearing temperature rise test, motor bearing stable temperature is defined:

Options:

A.  

by the manufacturer's FAT procedure.

B.  

as a change of not more than 1°C in 30 minutes.

C.  

as a rise of not more than 1°C in one hour.

D.  

as a rise of not more than 2°C in one hour.

Discussion 0
Questions 23

Who should the Source Inspector notify if they believe that product quality may be compromised by schedule pressures?

Options:

A.  

Master Scheduler

B.  

The inspection coordinator

C.  

The shop QA Manager

D.  

Project Manager

Discussion 0
Questions 24

In addition to purchase order requirements and company standards, what document would provide the details for correct coatings application?

Options:

A.  

Quality Plan

B.  

Manufacturers' Recommendations

C.  

ASME BPVC Section II

D.  

Inspection and Test Plan

Discussion 0
Questions 25

This device is a(n):

Options:

A.  

micrometer.

B.  

digital caliper.

C.  

vernier caliper.

D.  

engineer's scale.

Discussion 0
Questions 26

Any reports, such as Material Test Reports, that have been modified or corrected should be:

Options:

A.  

accepted after clarification.

B.  

cause for immediate rejection.

C.  

rejected at the discretion of the source inspector.

D.  

accepted after signatures are verified.

Discussion 0
Questions 27

According to NFPA 70, is the use of Teflon tape on threaded connections for conduits allowed?

Options:

A.  

Only when installed in a Class I, Division 2 area

B.  

Yes, the use of Teflon on metal raceways, cable armor, and other metal enclosures prevents water from entering

C.  

No, metal raceways and other metal enclosures for conductors shall be metallically joined together into a continuous electrical conductor

D.  

Yes, the use of Teflon ensures an explosion proof vapor seal

Discussion 0
Questions 28

What is an insulation resistance test?

Options:

A.  

A test that determines the adequacy of electrical insulation for the normally occurring over voltage transient

B.  

A test that determines the corrosive contaminants around the conductors, terminal spacing problems, and tolerance errors in cables

C.  

A spot overvoltage test which uses an applied DC voltage to measure ohms

D.  

A test that determines the voltage that electrical insulation can withstand during normal operation

Discussion 0
Questions 29

According to API 541, determination of efficiency and power, locked-rotor current, power factor, torque, full-load current and slip are some of the tests verified when performing a:

Options:

A.  

complete test.

B.  

compliance test.

C.  

design test.

D.  

routine test.

Discussion 0
Questions 30

What is the common industry term used for the dielectric withstand test?

Options:

A.  

Hipot test

B.  

Voltage test

C.  

Current test

D.  

Capacitor microfarad dielectric test

Discussion 0
Questions 31

Circuit breakers over 1000 V equipped with stored energy mechanisms shall perform which of the following functions?

Options:

A.  

Indicate whether power is available to the circuit breaker

B.  

Identify the presence of fault current flow through the circuit breaker

C.  

Locate the position of the charging mechanism

D.  

Prevent the release of the stored energy unless the mechanism has been fully charged

Discussion 0
Questions 32

What document is used for petroleum and chemical industry premium-efficiency, severe-duty, totally enclosed fan-cooled TEFC squirrel cage induction motors up to and including 370 kW 500 hp?

Options:

A.  

API 546

B.  

IEEE 141

C.  

IEEE 841

D.  

NFPA 70

Discussion 0
Questions 33

During the course of manufacturing the supplier/vendor may propose design changes that could impact cost, schedule and/or quality. In such cases, the source inspector should:

Options:

A.  

prepare a summary of the changes made for inclusion in their report and subsequent action by the purchaser.

B.  

request that the supplier/vendor develop a cost/benefit analysis for review and approval by the inspector.

C.  

prepare a cost/benefit analysis in order to justify their acceptance or rejection of the proposed changes.

D.  

request that the supplier/vendor propose such changes in writing for review by the purchaser.

Discussion 0