Quiz-summary
0 of 7 questions completed
Questions:
- 1
- 2
- 3
- 4
- 5
- 6
- 7
Information
Premium Practice Questions
You have already completed the quiz before. Hence you can not start it again.
Quiz is loading...
You must sign in or sign up to start the quiz.
You have to finish following quiz, to start this quiz:
Results
0 of 7 questions answered correctly
Your time:
Time has elapsed
Categories
- Not categorized 0%
Unlock Your Full Report
You missed {missed_count} questions. Enter your email to see exactly which ones you got wrong and read the detailed explanations.
Submit to instantly unlock detailed explanations for every question.
Success! Your results are now unlocked. You can see the correct answers and detailed explanations below.
- 1
- 2
- 3
- 4
- 5
- 6
- 7
- Answered
- Review
-
Question 1 of 7
1. Question
Which practical consideration is most relevant when executing Vibration analysis for rotating equipment in a commercial facility to ensure the integrity of the diagnostic data for motor health assessment?
Correct
Correct: For vibration analysis to be effective, the sensor must have a solid mechanical path to the source of the vibration, which is typically the bearings. Mounting the transducer on a rigid, non-resonant surface like the bearing housing ensures that high-frequency vibrations, such as those caused by early-stage bearing failure or rotor bar issues, are not dampened or filtered out before reaching the sensor.
Incorrect: Mounting sensors on cooling fins or shrouds is incorrect because these thin metal components have their own resonant frequencies that can mask or distort the actual vibration data of the motor. Conducting measurements in a de-energized state is not possible for vibration analysis, as the mechanical and magnetic forces that generate the vibration signatures are only present while the motor is running. Focusing only on the non-drive end is insufficient, as the drive-end bearings are often subject to higher loads and are more likely to exhibit signs of misalignment or coupling wear.
Takeaway: Effective vibration analysis requires rigid sensor placement on the bearing housing during operation to capture an accurate and undistorted frequency spectrum of the rotating assembly.
Incorrect
Correct: For vibration analysis to be effective, the sensor must have a solid mechanical path to the source of the vibration, which is typically the bearings. Mounting the transducer on a rigid, non-resonant surface like the bearing housing ensures that high-frequency vibrations, such as those caused by early-stage bearing failure or rotor bar issues, are not dampened or filtered out before reaching the sensor.
Incorrect: Mounting sensors on cooling fins or shrouds is incorrect because these thin metal components have their own resonant frequencies that can mask or distort the actual vibration data of the motor. Conducting measurements in a de-energized state is not possible for vibration analysis, as the mechanical and magnetic forces that generate the vibration signatures are only present while the motor is running. Focusing only on the non-drive end is insufficient, as the drive-end bearings are often subject to higher loads and are more likely to exhibit signs of misalignment or coupling wear.
Takeaway: Effective vibration analysis requires rigid sensor placement on the bearing housing during operation to capture an accurate and undistorted frequency spectrum of the rotating assembly.
-
Question 2 of 7
2. Question
A regulatory inspection at a wealth manager focuses on Testing of transformers, motors, and generators in the context of internal audit remediation. The examiner notes that the facility’s emergency power supply system (EPSS) underwent a recent audit which flagged inconsistencies in the maintenance logs for the Level 1 standby generator. During the follow-up review, the internal auditor must evaluate the adequacy of the testing procedures implemented to address the previous findings. Which of the following actions best demonstrates a comprehensive audit of the generator’s operational readiness in accordance with safety and performance standards?
Correct
Correct: For Level 1 emergency power systems, standard maintenance protocols (such as those in NFPA 110) require monthly testing under load. Running the generator at a minimum of 30% of its nameplate rating or at the manufacturer’s recommended exhaust gas temperature is critical to prevent ‘wet stacking,’ which is the accumulation of unburnt fuel in the exhaust system that can lead to engine failure and reduced reliability.
Incorrect: Conducting a high-potential (Hi-Pot) test is a high-stress procedure typically reserved for commissioning or major maintenance, not routine monthly auditing, and performing it during peak hours introduces unnecessary operational risk. Replacing batteries every six months is an inefficient use of resources and exceeds standard maintenance intervals, which are typically based on multi-year cycles or condition-based monitoring. Restricting the inspection of transformer liquid-level gauges to an annual basis is insufficient for early leak detection, and reading external gauges generally does not require entering the arc flash boundary of energized equipment.
Takeaway: Auditing emergency power systems requires verifying that periodic load tests meet specific duration and capacity thresholds to ensure the mechanical and electrical integrity of the system.
Incorrect
Correct: For Level 1 emergency power systems, standard maintenance protocols (such as those in NFPA 110) require monthly testing under load. Running the generator at a minimum of 30% of its nameplate rating or at the manufacturer’s recommended exhaust gas temperature is critical to prevent ‘wet stacking,’ which is the accumulation of unburnt fuel in the exhaust system that can lead to engine failure and reduced reliability.
Incorrect: Conducting a high-potential (Hi-Pot) test is a high-stress procedure typically reserved for commissioning or major maintenance, not routine monthly auditing, and performing it during peak hours introduces unnecessary operational risk. Replacing batteries every six months is an inefficient use of resources and exceeds standard maintenance intervals, which are typically based on multi-year cycles or condition-based monitoring. Restricting the inspection of transformer liquid-level gauges to an annual basis is insufficient for early leak detection, and reading external gauges generally does not require entering the arc flash boundary of energized equipment.
Takeaway: Auditing emergency power systems requires verifying that periodic load tests meet specific duration and capacity thresholds to ensure the mechanical and electrical integrity of the system.
-
Question 3 of 7
3. Question
Your team is drafting a policy on Electrical Safety for Personnel as part of model risk for a mid-sized retail bank. A key unresolved point is the protocol for facilities staff when third-party contractors are performing maintenance on the 480V/277V distribution panels in the data center. The policy must specify the boundary that defines the limit of approach for unqualified personnel to prevent accidental contact with energized parts. According to NFPA 70E standards, which boundary represents the distance from an exposed energized conductor within which a shock hazard exists and unqualified persons must be escorted by a qualified individual?
Correct
Correct: The Limited Approach Boundary is defined by NFPA 70E as the shock protection boundary farthest from the energized part. It is the limit that unqualified persons may not cross unless they are advised of the hazards and are continuously escorted by a qualified person who is trained to identify and avoid the risks associated with the energized equipment.
Incorrect: The Restricted Approach Boundary is a shock protection boundary closer to the energized part than the limited boundary and is strictly reserved for qualified persons using appropriate PPE and tools. The Arc Flash Boundary is the distance at which a person could receive a second-degree burn if an arc flash occurs; while it is a safety perimeter, it is based on thermal energy rather than the shock-hazard approach limits for unqualified personnel. Equipment Clearance Zone is a general term often used for working space requirements (NEC 110.26) but is not the specific NFPA 70E term for the shock hazard boundary for unqualified personnel.
Takeaway: The Limited Approach Boundary serves as the primary perimeter to protect unqualified personnel from electrical shock hazards by requiring qualified supervision for entry.
Incorrect
Correct: The Limited Approach Boundary is defined by NFPA 70E as the shock protection boundary farthest from the energized part. It is the limit that unqualified persons may not cross unless they are advised of the hazards and are continuously escorted by a qualified person who is trained to identify and avoid the risks associated with the energized equipment.
Incorrect: The Restricted Approach Boundary is a shock protection boundary closer to the energized part than the limited boundary and is strictly reserved for qualified persons using appropriate PPE and tools. The Arc Flash Boundary is the distance at which a person could receive a second-degree burn if an arc flash occurs; while it is a safety perimeter, it is based on thermal energy rather than the shock-hazard approach limits for unqualified personnel. Equipment Clearance Zone is a general term often used for working space requirements (NEC 110.26) but is not the specific NFPA 70E term for the shock hazard boundary for unqualified personnel.
Takeaway: The Limited Approach Boundary serves as the primary perimeter to protect unqualified personnel from electrical shock hazards by requiring qualified supervision for entry.
-
Question 4 of 7
4. Question
In your capacity as MLRO at an investment firm, you are handling Calculating loads for general lighting and receptacles during business continuity. A colleague forwards you a regulator information request showing that the electrical load calculations for the firm’s secondary data site do not specify the individual load allowances for general-purpose receptacles. To verify that the facility’s infrastructure meets the minimum safety standards of the National Electrical Code (NEC), how should the load for each receptacle outlet on a single yoke be accounted for in the branch-circuit calculations?
Correct
Correct: According to NEC 220.14(I), for other than dwelling units, receptacle outlets are calculated at not less than 180 volt-amperes for each single or for each multiple receptacle on one yoke. This provides a standardized baseline for load calculations in commercial environments to ensure branch circuits are not undersized for general use.
Incorrect: Calculating receptacles as part of the general lighting load is a method reserved for dwelling units under NEC 220.14(J) and is not applicable to commercial or investment firm facilities. Using 125 percent of a nameplate rating is a requirement for continuous loads or specific motor applications rather than general-purpose receptacle outlets. Assigning 600 volt-amperes is an arbitrary value that exceeds the minimum code requirement and does not reflect the standard calculation methodology for general-purpose outlets.
Takeaway: In commercial load calculations, the National Electrical Code requires each receptacle strap or yoke to be valued at a minimum of 180VA.
Incorrect
Correct: According to NEC 220.14(I), for other than dwelling units, receptacle outlets are calculated at not less than 180 volt-amperes for each single or for each multiple receptacle on one yoke. This provides a standardized baseline for load calculations in commercial environments to ensure branch circuits are not undersized for general use.
Incorrect: Calculating receptacles as part of the general lighting load is a method reserved for dwelling units under NEC 220.14(J) and is not applicable to commercial or investment firm facilities. Using 125 percent of a nameplate rating is a requirement for continuous loads or specific motor applications rather than general-purpose receptacle outlets. Assigning 600 volt-amperes is an arbitrary value that exceeds the minimum code requirement and does not reflect the standard calculation methodology for general-purpose outlets.
Takeaway: In commercial load calculations, the National Electrical Code requires each receptacle strap or yoke to be valued at a minimum of 180VA.
-
Question 5 of 7
5. Question
An internal review at a credit union examining Electrical Safety for Personnel as part of outsourcing has uncovered that the third-party facility management firm performed several maintenance tasks on the main service switchgear over the last 12 months without a documented exchange of hazard information. The Facilities Manager noted that the contractor was selected based on their reputation, and therefore, the credit union did not provide specific data regarding the building’s available fault current or protective device clearing times. According to NFPA 70E standards regarding host and contract employers, what is the primary responsibility of the credit union in this scenario?
Correct
Correct: According to NFPA 70E, the host employer (the credit union) has a regulatory obligation to communicate known hazards to the contract employer. This includes providing information about the electrical system, such as available fault current and the operating time of protective devices, which the contractor needs to accurately determine the arc flash boundary and select the correct PPE.
Incorrect: Direct supervision of a contractor’s employees is generally the responsibility of the contract employer, not the host. Providing exemptions for lockout/tagout for convenience or business continuity is a violation of safety standards. While the host must provide system data, the contract employer is typically responsible for ensuring their own employees are trained and equipped with the necessary PPE based on the data provided by the host.
Takeaway: Host employers must coordinate with contractors by sharing site-specific electrical system data to ensure that arc flash and shock risk assessments are accurately performed.
Incorrect
Correct: According to NFPA 70E, the host employer (the credit union) has a regulatory obligation to communicate known hazards to the contract employer. This includes providing information about the electrical system, such as available fault current and the operating time of protective devices, which the contractor needs to accurately determine the arc flash boundary and select the correct PPE.
Incorrect: Direct supervision of a contractor’s employees is generally the responsibility of the contract employer, not the host. Providing exemptions for lockout/tagout for convenience or business continuity is a violation of safety standards. While the host must provide system data, the contract employer is typically responsible for ensuring their own employees are trained and equipped with the necessary PPE based on the data provided by the host.
Takeaway: Host employers must coordinate with contractors by sharing site-specific electrical system data to ensure that arc flash and shock risk assessments are accurately performed.
-
Question 6 of 7
6. Question
The monitoring system at a broker-dealer has flagged an anomaly related to Electrical System Compliance with Motor Control and Protection Standards during transaction monitoring. Investigation reveals that several high-capacity motors driving the facility’s HVAC system are controlled by a centralized motor control center (MCC) located in a restricted-access basement. The motors themselves are located on the rooftop, and there is no individual disconnecting means within sight of the motors. To comply with the National Electrical Code (NEC) regarding the safety of maintenance personnel, what specific feature must the remote disconnecting means possess?
Correct
Correct: According to NEC 430.102(B) Exception, where a motor disconnecting means is not within sight from the motor and the driven machinery, the disconnecting means shall be capable of being locked in the open position. The provision for locking must be a permanent part of the switch or circuit breaker assembly and must remain in place regardless of whether a lock is currently present. This ensures that Lockout/Tagout (LOTO) procedures can be reliably performed to protect personnel.
Incorrect: Visual indicator lights are useful for status monitoring but do not satisfy the safety requirement for a physical, lockable disconnect. While labeling and distance from the controller are important for general organization, they do not address the specific safety hazard of a motor being energized while a technician is working on it out of sight of the disconnect. Interrupting ratings are critical for short-circuit protection but are unrelated to the physical location and locking requirements for motor disconnects.
Takeaway: When a motor disconnect is not within sight of the motor, it must have a permanent locking provision to ensure the safety of maintenance personnel through proper lockout procedures.
Incorrect
Correct: According to NEC 430.102(B) Exception, where a motor disconnecting means is not within sight from the motor and the driven machinery, the disconnecting means shall be capable of being locked in the open position. The provision for locking must be a permanent part of the switch or circuit breaker assembly and must remain in place regardless of whether a lock is currently present. This ensures that Lockout/Tagout (LOTO) procedures can be reliably performed to protect personnel.
Incorrect: Visual indicator lights are useful for status monitoring but do not satisfy the safety requirement for a physical, lockable disconnect. While labeling and distance from the controller are important for general organization, they do not address the specific safety hazard of a motor being energized while a technician is working on it out of sight of the disconnect. Interrupting ratings are critical for short-circuit protection but are unrelated to the physical location and locking requirements for motor disconnects.
Takeaway: When a motor disconnect is not within sight of the motor, it must have a permanent locking provision to ensure the safety of maintenance personnel through proper lockout procedures.
-
Question 7 of 7
7. Question
How should Swimming pools and spas electrical requirements be correctly understood for ICC Commercial Electrical Inspector (E2)? During the inspection of a newly constructed commercial swimming pool, the inspector is evaluating the equipotential bonding grid for the pool shell and the surrounding perimeter surfaces. According to the National Electrical Code (NEC) requirements for permanent pools, which of the following statements accurately describes the mandatory bonding of the pool’s structural components and surrounding areas?
Correct
Correct: According to NEC 680.26(B), an equipotential bonding system is required to reduce voltage gradients in the pool area. The conductor used must be solid copper and not smaller than 8 AWG. Specifically, NEC 680.26(B)(2)(b) states that if a copper conductor is used for perimeter bonding, it must be connected to the pool’s reinforcing steel or the pool shell at four points uniformly spaced around the perimeter of the pool.
Incorrect: Option B is incorrect because the bonding conductor must be solid, not stranded, and its primary purpose is to equalize potential locally rather than serving as a traditional equipment grounding conductor for the subpanel. Option C is incorrect because perimeter bonding is a requirement for both indoor and outdoor pools regardless of the surface material to mitigate voltage gradients. Option D is incorrect because bonding conductors are typically bare, not insulated, and 12 AWG does not meet the minimum size requirement of 8 AWG for equipotential bonding.
Takeaway: Equipotential bonding requires a solid 8 AWG or larger copper conductor connected to the pool structure at four points to effectively eliminate hazardous voltage gradients.
Incorrect
Correct: According to NEC 680.26(B), an equipotential bonding system is required to reduce voltage gradients in the pool area. The conductor used must be solid copper and not smaller than 8 AWG. Specifically, NEC 680.26(B)(2)(b) states that if a copper conductor is used for perimeter bonding, it must be connected to the pool’s reinforcing steel or the pool shell at four points uniformly spaced around the perimeter of the pool.
Incorrect: Option B is incorrect because the bonding conductor must be solid, not stranded, and its primary purpose is to equalize potential locally rather than serving as a traditional equipment grounding conductor for the subpanel. Option C is incorrect because perimeter bonding is a requirement for both indoor and outdoor pools regardless of the surface material to mitigate voltage gradients. Option D is incorrect because bonding conductors are typically bare, not insulated, and 12 AWG does not meet the minimum size requirement of 8 AWG for equipotential bonding.
Takeaway: Equipotential bonding requires a solid 8 AWG or larger copper conductor connected to the pool structure at four points to effectively eliminate hazardous voltage gradients.
