5. How many system bonding jumpers normally are there for a separately derived system that's grounded? A. Three B. Two C. One D. Zero 6. How many grounded neutral conductors are in a 208Y/120 volt, 3-phase, 4-wire system? A. Three B. Two C. One D. Four 7. Which of the following are sometimes installed as an emergency system, legally required standby system, or optional standby power system for a building or structure? A. Generators B. Surge protection devices C. Surge arresters D. Transformers 8. If the system bonding jumper in a DC system is a screw, what color must the screw be? A. White B. Red C. Orange D. Green 9. If overcurrent protection is provided in the transformer of a separately derived system, which of the following statements is correct? A. An equipment grounding conductor must be run with the conductors between the transformer and the building's disconnect. B. There's no need for service equipment or a panelboard in the separate building. C. A ground electrode must be present at the transformer and the building's disconnect. D. The neutral should be bonded to the equipment grounding conductor at the service equipment in the separate building. 10. A separate building that's supplied with a feeder or branch service will also need a A. neutral conductor bonded to ground. B. separate EGC from the supply EGC. C. grounding electrode system. D. transformer for isolation. 11. An electrical system that's not grounded and is between 120 and 1000 volts must include the use of A. equipotential barriers. B. ground isolators. C. ground detectors. D. arc suppression. 12. Which grounding method is typically required of higher-voltage systems? A. Grounding through inductors B. Grounding through a high-impedance device C. Grounding through surge arresters D. Grounding through a low amount of resistance 13. Which of the following is suitable as an equipment grounding conductor so long as it does so under more restrictive conditions? A. Flexible metal conduit B. Rigid metal conduit C. Armored cable D. Electrical metallic tubing 14. How many separate equipment grounding paths are required for branch circuits serving patient care spaces? A. One B. Two C. Four D. Three 15. If installed with the feeder to the building or structure, the _______ shall be connected to the building or structure's disconnecting means and to the grounding electrode system. A. supply-side bonding jumper B. load-side bonding jumper C. grounding electrode conductor D. equipment grounding conductor 16. If the first overcurrent protective device isn't located at the generator, a/an _______ bonding jumper must be installed with the feeder up to the first system overcurrent protective device enclosure. A. load-side B. equipment C. main D. supply-side 17. The _______ is typically where the service main bonding jumper is installed or where the system bonding jumper is installed for a separately derived system. A. equipotential plane B. site-isolating device C. isolated power system D. point of grounding 18. An equipotential bonding grid at a farm location is to be connected to the ground terminal bus of the nearest panelboard. Which of the following is the minimum size of solid copper conductor that can be used for this bonding action? A. AWG 12 B. AWG 14 C. AWG 8 D. AWG 10 19. Which of the following is an approved disconnecting means for a feeder or branch circuit supplying a separate building or structure? A. Bonding locknut B. Panelboard C. Circuit breaker D. Overcurrent device 20. One limitation of a high-impedance grounded neutral system is that A. the phase-to-ground voltage can be no greater than 240 volts AC. B. voltage can vary across the supply conductors. C. there can be no neutral to line loads. D. an EGC must be connected to the neutral every 1300 feet.
Protection System
A system that protects electrical systems from faults by isolating the problematic part from the remainder of the system, preventing power from being cut from healthy elements, improving system dependability and efficiency is the protection system. Protection devices are the equipment that are utilized to implement the protection system.
Predictive Maintenance System
Predictive maintenance technologies are designed to assist in determining the state of in-service equipment so that maintenance can be scheduled. Predictive maintenance is the application of information; proactive maintenance approaches examine the condition of equipment and anticipate when it should maintain. The purpose of predictive maintenance is to forecast when equipment will fail (depending on a variety of parameters), then prevent the failure through routine and corrective maintenance.Condition monitoring is the continual monitoring of machines during process conditions to maintain optimal machine use, which is necessary for predictive maintenance. There are three types of condition monitoring: online, periodic, and remote. Finally, remote condition monitoring allows the equipment observed from a small place and data supplied for analysis.
Preventive Maintenance System
To maintain the equipment and materials on a regular basis in order to maintain those running conditions and reduce unnecessary shutdowns due to unexpected equipment failure is called Preventive Maintenance (PM).
5. How many system bonding jumpers normally are there for a separately derived system that's grounded? A. Three
B. Two
C. One
D. Zero
|
6. How many grounded neutral conductors are in a 208Y/120 volt, 3-phase, 4-wire system? A. Three D. Four 7. Which of the following are sometimes installed as an emergency system, legally required standby system, or optional standby power system for a building or structure? A. Generators 8. If the system bonding jumper in a DC system is a screw, what color must the screw be? A. White D. Green 9. If overcurrent protection is provided in the transformer of a separately derived system, which of the following statements is correct? A. An equipment grounding conductor must be run with the conductors between the transformer and the building's disconnect. B. There's no need for service equipment or a panelboard in the separate building. 10. A separate building that's supplied with a feeder or branch service will also need a A. neutral conductor bonded to ground. D. transformer for isolation. 11. An electrical system that's not grounded and is between 120 and 1000 volts must include the use of A. equipotential barriers. D. arc suppression. 12. Which grounding method is typically required of higher-voltage systems? A. Grounding through inductors |
D. Grounding through a low amount of resistance
13. Which of the following is suitable as an equipment grounding conductor so long as it does so under more restrictive conditions?
A. Flexible metal conduit B. Rigid metal conduit
C. Armored cable
D. Electrical metallic tubing
14. How many separate equipment grounding paths are required for branch circuits serving patient care spaces?
A. One B. Two C. Four D. Three
15. If installed with the feeder to the building or structure, the _______ shall be connected to the building or structure's disconnecting means and to the grounding electrode system.
A. supply-side bonding jumper
B. load-side bonding jumper
C. grounding electrode conductor D. equipment grounding conductor
16. If the first overcurrent protective device isn't located at the generator, a/an _______ bonding jumper must be installed with the feeder up to the first system overcurrent protective device enclosure.
A. load-side B. equipment C. main
D. supply-side
17. The _______ is typically where the service main bonding jumper is installed or where the system bonding jumper is installed for a separately derived system.
A. equipotential plane
B. site-isolating device C. isolated power system D. point of grounding
18. An equipotential bonding grid at a farm location is to be connected to the ground terminal bus of the nearest panelboard. Which of the following is the minimum size of solid copper conductor that can be used for this bonding action?
A. AWG 12 B. AWG 14 C. AWG 8 D. AWG 10
19. Which of the following is an approved disconnecting means for a feeder or branch circuit supplying a separate building or structure?
A. Bonding locknut
B. Panelboard
C. Circuit breaker
D. Overcurrent device
20. One limitation of a high-impedance grounded neutral system is that A. the phase-to-ground voltage can be no greater than 240 volts AC.
B. voltage can vary across the supply conductors.
C. there can be no neutral to line loads.
D. an EGC must be connected to the neutral every 1300 feet.
Trending now
This is a popular solution!
Step by step
Solved in 5 steps
