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Electrical Contractor Question & Answers

May 15, 2023 By Wat Electrical

This article lists 100 Electrical Contractor MCQs for engineering students. All the Electrical Contractor Questions & Answers below include a hint and a link to the relevant topic wherever possible. This is helpful for users who are preparing for their exams, interviews, or professionals who would like to brush up on the fundamentals of Electrical Contractor.

An electrical contractor is a business or individual who is responsible for installing, maintaining, and repairing electrical systems in homes, buildings, and other structures. Electrical contractors typically work on projects that involve electrical wiring, lighting, power systems, and control systems.

To become an electrical contractor, one typically needs to have a background in electrical engineering or a related field, as well as the necessary licenses and certifications required by local and state authorities. Electrical contractors must also have a good understanding of local building codes and regulations, as well as safety procedures and best practices for electrical work.

Electrical contractors can work on a wide range of projects, including new construction projects, renovations and remodeling projects, and maintenance and repair projects. They may also specialize in specific areas of electrical work, such as commercial or industrial electrical systems, or residential electrical systems. The capacitor bank is one of the applications of contactor.

Overall, electrical contractors play a crucial role in ensuring that electrical systems are installed and maintained safely and effectively, and they are a vital part of the construction and maintenance industries.

1). What type of electrical contractor works on projects related to high voltage power transmission and distribution?

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2). Which of the following is an example of a renewable energy source?

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3). What is the purpose of a circuit breaker in an electrical system?

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4). Which of the following is a common electrical hazard?

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5). Which of the following is a common cause of electrical fires?

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6). What is the first step an electrical contractor should take before starting a project?

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7). What is the minimum level of education required to become an electrical contractor?


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8). What is the most important safety consideration when working with electrical systems?

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9). What type of electrical contractor typically works on data center projects?

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10). Which of the following is a common tool used by electrical contractors?

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11). What type of electrical contractor specializes in renewable energy projects?

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12). What is the purpose of grounding in an electrical system?

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13). Which of the following is a common electrical hazard that electrical contractors must be aware of?

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14). Which of the following is the most common type of residential electrical wiring?

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15). What is the purpose of a transformer in an electrical system?

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Read more about Transformers

16). What is the most common cause of electrical fires in residential buildings?

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17). What is the purpose of bonding in an electrical system?

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18). What is the minimum clearance required between overhead power lines and a building or structure?

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19). Which of the following is an example of a low-voltage electrical system?

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20). Which of the following is a potential advantage of working with a low voltage electrical contractor?

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21). Which of the following may be a typical project for a low voltage electrical contractor?

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22). Which of the following low-voltage systems is commonly installed by a low voltage electrical contractor?

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23). What are some common types of electrical equipment that a maintenance electrical contractor may work with?

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24). What is the purpose of a router in a data network?

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25). What is the purpose of a firewall in a data network?

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Electrical Contractor MCQ for Interviews

26). What is the purpose of a DNS server in a data network?

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27). What is the purpose of a VPN in a data network?

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28). What is the purpose of a DHCP server in a data network?

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29). What is the purpose of a modem in a data network?

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30). What is the purpose of a gateway in a data network?

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31). What is the purpose of an intrusion detection system?

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32). What is the standard form of IDS?

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33). What is the purpose of an electrical box?

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34). Which of the following is not a type of electrical box?

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35). What is the purpose of a conduit fitting?

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36). Which of the following is not a type of conduit fitting?

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37). What is the purpose of a cable clamp?

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38). Which of the following is not a type of cable clamp?

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39). What is a conduit used for in electrical installations?

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40). What is the purpose of an electrical connector?

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41). What is an electrical fitting used for in electrical installations?

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42). What is a grounding wire used for in electrical systems?

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43). What is a wire nut used for in electrical connections?

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44). What is a panel board used for in electrical systems?

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45). What is the standard form of GFCI?

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46). What is the function of an ammeter?

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47). What is the function of a voltmeter?

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48). What is the function of a wattmeter?

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49). What is the purpose of a demand meter?

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50). What is the standard form of NIDS?

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Electrical Contractor MCQ for Exams

51). What is a circuit tester?

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52). What is a non-contact voltage tester?

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53). What is a continuity tester?

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54). What is a GFCI tester?

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55). What is a phase sequence tester?

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56). What is a line tester?

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57). What is a cable puller?

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58). What is the maximum pulling force of a cable puller?

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59). What is a fishtape?

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60). What is the standard form of HIDS?

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61). What is a cable grip?

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62). What is a conduit snake?

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63). What is a conduit bender?

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64). What is a wire stripper?

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65). What is the purpose of the cutting blades on a wire stripper?

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66). What is a wire gauge?

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67). What is the purpose of the adjustable jaws on a wire stripper?

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68). What is the purpose of the insulation crimping jaws on a wire stripper?

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69). What is a crimping tool?

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70). What is the purpose of the die on a crimping tool?

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71). What types of terminals can be crimped with a crimping tool?

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72). What is the purpose of the ratchet mechanism on a crimping tool?

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73). What is a conduit bender used for?

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74). What type of conduit can be bent with a conduit bender?

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75). What is the purpose of the angle guide on a conduit bender?

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Electrical Contractor MCQ for Quiz

76). What is the most important safety consideration when using a conduit bender?

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77). What is a voltage tester used for?

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78). How does a non-contact voltage tester work?

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79). What are cable ties used for?

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80). What materials are cable ties typically made from?

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81). How do you use a cable tie?

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82). What are fish tapes used for?

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83). What is a fish tape made of?

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84). How do you use a fish tape?

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85). What is a glow rod?

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86). What is the maximum length of a fish tape?

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87). What is a cordless drill/driver?

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88). What is the power source for a cordless drill/driver?

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89). What is the difference between a drill and a driver?

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90). What is the chuck on a cordless drill/driver?

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91). What is torque on a cordless drill/driver?

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92). What is the maximum speed of a cordless drill/driver?

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93). How is the speed of a cordless drill controlled?

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94). What is the maximum drill bit size that can be used with a cordless drill?

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95). What is the voltage of a typical cordless drill battery?

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96). What is the chuck key used for on a cordless drill?

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97). What is a right-angle drill used for?

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98). What is a rotary hammer drill used for?

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99). What is a drill press used for?

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100). What is a multi-purpose cordless tool used for?

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For More MCQs

Electrical Inductors Questions & Answers.
Electrical Cables Questions & Answers.
Electrical Drive Questions & Answers.
Electrical Tariff Questions & Answers.
Electrical Conductor Questions & Answers.
Electrical Insulator Questions & Answers.
Electrical Wiring Questions & Answers.

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