Electrical Inspector {National Electrical Code}
Competency Study Guide
Comprehensive Resource To Help You Ace 2026-2027 Exams
Includes Frequently Tested Questions With ELABORATED
100% Correct COMPLETE SOLUTIONS
Guaranteed Pass First Attempt!! Current Update!!
1. Which of the following substances is considered a good semiconductor? -
Correct Answer: Silicon
2. If the resistance of a circuit is 25 ohms and the current is 10 amps, the
power in watts is ___ - Correct Answer: 2,500
3. Which of the following is used to step voltage down to lower levels before it
reaches a home or office? - Correct Answer: Transformer
4. The stationary magnet of a DC motor is represented by the ___ -
Correct Answer: field poles
5. For a constant-torque load, the horsepower increases and decreases ___ -
Correct Answer: in direct proportion to the speed
,6. Any exposed live parts must be guarded if they are operating at ___ -
Correct Answer: 50V or more between terminals
7. Which of the following motors is used when the required starting torque is
high and speed control is desirable? - Correct Answer: Compound
8. A correction factor must be applied if the ambient temperature is above
___ - Correct Answer: 86 degrees Fahrenheit
9. Health care facilities are often supplied by two or more distribution points;
this is known as a ____ - Correct Answer: spot network
10.What must happen before any work may be performed in a confined space?
- Correct Answer: Completion of a hazard review
11.A delta-connected motor has ___ - Correct Answer: 9 leads
12.The synchronous speed at which a four-pole, 60Hz induction motor
operates is ___ - Correct Answer: 1,800 rpm
13.According to NEMA definitions, which of the following is a type of totally
enclosed motor? - Correct Answer: water-cooled
14.If a conductor has a diameter of 40 mils, what is the diameter in inches? -
Correct Answer: 0.04"
,15.A typical constant-torque load would be a ___ - Correct Answer:
conveyor
16.NFPA 70E provides practical guidance in______. - Correct Answer:
electrical hazard assessment
17.Attachment plugs and receptacles in hazardous locations must be listed for
use in ____ - Correct Answer: Class I, Group C locations
18.Which of the following should have side rails that extend 36 inches above
the top support point? - Correct Answer: Straight ladders
19.How many amps are there in the current of a circuit if the voltage source is
140V and the resistance is 2 ohms? - Correct Answer: 70 amps
20.Installation of X-ray equipment is governed by ____ - Correct Answer:
NEC Article 517, Part V
21.Which of the following is most likely to use dynamic braking? - Correct
Answer: Forklift
22.If five No. 10 AWG current-carrying conductors are installed in a raceway
where the ambient temperature is 70 degrees Fahrenheit, the allowable
ampacity must be ___ - Correct Answer: reduced by 80% of its value
, 23.The square mil area of a conductor that is 0.250" on all sides is ____ -
Correct Answer: 62,500 square mils
24.You are required to be evaluated by a physician to ensure that you are
physically fit to use which of the following types of protective equipment? -
Correct Answer: Respirator
25.Low voltage equipment that is typically in contact with patients must be
moisture-resistant and operate on ___ - Correct Answer: 10V or less
26.Which of the following is true with regard to working near cranes? -
Correct Answer: Only individuals trained in rigging should ever rig material
for a lift.
27.Which of the following battery byproducts can be explosive when mixed
with air? - Correct Answer: Hydrogen
28.Operating rooms must be provided with a minimum of ___ - Correct
Answer: 36 receptacles
29.Insulating gloves must be inspected by the user ______. - Correct
Answer: before each use
Competency Study Guide
Comprehensive Resource To Help You Ace 2026-2027 Exams
Includes Frequently Tested Questions With ELABORATED
100% Correct COMPLETE SOLUTIONS
Guaranteed Pass First Attempt!! Current Update!!
1. Which of the following substances is considered a good semiconductor? -
Correct Answer: Silicon
2. If the resistance of a circuit is 25 ohms and the current is 10 amps, the
power in watts is ___ - Correct Answer: 2,500
3. Which of the following is used to step voltage down to lower levels before it
reaches a home or office? - Correct Answer: Transformer
4. The stationary magnet of a DC motor is represented by the ___ -
Correct Answer: field poles
5. For a constant-torque load, the horsepower increases and decreases ___ -
Correct Answer: in direct proportion to the speed
,6. Any exposed live parts must be guarded if they are operating at ___ -
Correct Answer: 50V or more between terminals
7. Which of the following motors is used when the required starting torque is
high and speed control is desirable? - Correct Answer: Compound
8. A correction factor must be applied if the ambient temperature is above
___ - Correct Answer: 86 degrees Fahrenheit
9. Health care facilities are often supplied by two or more distribution points;
this is known as a ____ - Correct Answer: spot network
10.What must happen before any work may be performed in a confined space?
- Correct Answer: Completion of a hazard review
11.A delta-connected motor has ___ - Correct Answer: 9 leads
12.The synchronous speed at which a four-pole, 60Hz induction motor
operates is ___ - Correct Answer: 1,800 rpm
13.According to NEMA definitions, which of the following is a type of totally
enclosed motor? - Correct Answer: water-cooled
14.If a conductor has a diameter of 40 mils, what is the diameter in inches? -
Correct Answer: 0.04"
,15.A typical constant-torque load would be a ___ - Correct Answer:
conveyor
16.NFPA 70E provides practical guidance in______. - Correct Answer:
electrical hazard assessment
17.Attachment plugs and receptacles in hazardous locations must be listed for
use in ____ - Correct Answer: Class I, Group C locations
18.Which of the following should have side rails that extend 36 inches above
the top support point? - Correct Answer: Straight ladders
19.How many amps are there in the current of a circuit if the voltage source is
140V and the resistance is 2 ohms? - Correct Answer: 70 amps
20.Installation of X-ray equipment is governed by ____ - Correct Answer:
NEC Article 517, Part V
21.Which of the following is most likely to use dynamic braking? - Correct
Answer: Forklift
22.If five No. 10 AWG current-carrying conductors are installed in a raceway
where the ambient temperature is 70 degrees Fahrenheit, the allowable
ampacity must be ___ - Correct Answer: reduced by 80% of its value
, 23.The square mil area of a conductor that is 0.250" on all sides is ____ -
Correct Answer: 62,500 square mils
24.You are required to be evaluated by a physician to ensure that you are
physically fit to use which of the following types of protective equipment? -
Correct Answer: Respirator
25.Low voltage equipment that is typically in contact with patients must be
moisture-resistant and operate on ___ - Correct Answer: 10V or less
26.Which of the following is true with regard to working near cranes? -
Correct Answer: Only individuals trained in rigging should ever rig material
for a lift.
27.Which of the following battery byproducts can be explosive when mixed
with air? - Correct Answer: Hydrogen
28.Operating rooms must be provided with a minimum of ___ - Correct
Answer: 36 receptacles
29.Insulating gloves must be inspected by the user ______. - Correct
Answer: before each use
