Details
Contains over 10 years of past questions from the 2nd grade electrical work construction management engineer department.
This course is for those who aim to pass the exam by past exams.
Understand the trends in questions, find your own learning method, and proceed with your studies in a planned manner.
There are no in-app purchases and no ads.
For each question, you can check the answer immediately by clicking [Question ⇒ Answer].
In addition, the question text is also listed on the answer page, making it easy to review the questions.
You can check your self-understanding in the "Learning Confirmation Test" (R6 to R1), where 10 questions are randomly asked.
Start studying little by little during your commute on the train or bus or during your breaks.
One of the important things in order to obtain qualifications is to review past questions.
By going through past questions, you can understand how the questions are structured, what trends the questions tend to appear in, and what areas you are weak in and strong at.You can also use past questions to prepare for and plan your exams, such as which areas to focus your efforts on studying and where to earn points.
Find your own learning method and proceed with your studies in a planned manner.
*Reiwa 6th year 1st (first half/second half), Reiwa 5th year 1st (first half/second half), Reiwa 4th year 1st (first half/second half), Reiwa 3rd year 1st (first half/second half), Reiwa 2nd year (second half), Reiwa 1st (second half), Reiwa 1 (first half), 2018 (second half), 2018 (first half), 2017, 2016, 2015, 2014, 2013, 2012, and 2011 are included.
[Example problem]
R6 first test (second half) question [No.1]
When the combined capacitance in Figure A is CA[F] and the combined capacitance in Figure B is CB[F], which is the appropriate value for CA/CB?
R6 first test (second half) question [No.2]
A current I [A] flows through an infinitely long straight conductor in the direction shown in the figure, and the magnitude of the magnetic field at a point P1 10 cm away from the center of the straight conductor is 10 A/m. In this case, what is the appropriate value for the magnitude of the magnetic field H [A/m] at point P2, which is 20 cm away from the straight conductor?
R6 first test (second half) question [No.3]
In the circuit shown in the figure, what is the appropriate value for the current I[A] flowing through the 3Ω resistor?
R6 first test (second half) question [No.4]
In a three-phase rotating field type synchronous generator with two poles, which is the appropriate value for the rotational speed [min¯¹] when the frequency is 60Hz?
R6 first test (second half) question [No.5]
Which of the following is the most appropriate name for the equipment used in steam power generation that corresponds to the following description?
``It increases the thermal efficiency of the entire boiler by heating the boiler feed water using residual heat from the flue gas and recovering the heat.''
economizer
R6 first test (second half) question [No.6]
Which of the following is the most appropriate type of neutral point grounding method for a substation that corresponds to the following description?
"A grounding method that minimizes the voltage rise on the healthy phase when a single-wire ground fault occurs."
Direct grounding type
R6 first test (second half) question [No.7]
Which of the following is the most inappropriate description regarding harmonics in power distribution systems?
As a countermeasure against harmonic interference, a reactor is installed in parallel with the power capacitor.
R6 first test (second half) question [No.8]
Which of the following is the most inappropriate cause of temperature rise in power cables in underground power lines?
Corona loss
R6 first test (second half) question [No.9]
Which of the following is the most inappropriate description regarding lighting?
Luminous emittance is the size of the luminous flux incident per unit area of the light-receiving surface.
R6 first test (second half) question [No.10]
Which of the following is the most inappropriate method for starting a single-phase induction motor?
Inverter start type
R6 first test (second half) question [No.11]
Which of the following statements regarding water turbines used for hydroelectric power generation is an appropriate combination of words that applies to [ ]?
``A water turbine with a structure in which flowing water with a pressure head acts on the runner is called [A], and in [A], the flowing water flows in from the outer circumference of the runner, changes its direction in the axial direction within the runner, and flows out [B].
[A] Reaction water turbine [B] Francis water turbine
R6 first test (second half) question [No.12]
Which of the following is the most inappropriate description regarding noise from transformers in substations?
Reducing the cross-sectional area of the iron core and increasing the magnetic flux density are effective measures against noise.
R6 first test (second half) question [No.13]
Which of the following is the most inappropriate description regarding the characteristics of equipment that adjusts reactive power at substations?
The synchronous phase modifier will not supply fault current during short circuit fault.
R6 first test (second half) question [No.14]
Which of the following is the most inappropriate description regarding the sagging of electric wires in overhead power transmission lines?
If the slack is reduced, there is a risk that the wires will come into contact with each other and cause a short circuit.
R6 first test (second half) question [No.15]
Which of the following is the least relevant item to consider when selecting the thickness of wire to be used in high-voltage overhead distribution lines?
Earth fault current
R6 first test (second half) question [No.16]
Which of the following is the most inappropriate measure to reduce electromagnetic induction interference caused by overhead power transmission lines in communication lines?
Reduce the grounding resistance value at the neutral point of the power transmission line.
R6 first test (second half) question [No.17]
Which of the following is the most inappropriate device to use to prevent lightning damage on overhead power distribution lines?
disconnector
R6 first test (second half) question [No.18]
Which of the following is the most appropriate element for determining the direction of ground fault current in ground fault direction relays installed on high voltage distribution lines?
Phase difference between zero-sequence voltage and zero-sequence current
R6 first test (second half) question [No.19]
Which of the following is the most inappropriate statement regarding energy saving measures for general office lighting?
Select lighting equipment with a low maintenance rate value.
R6 first test (second half) question [No.20]
Which of the following is the most inappropriate feature when using inverter control for a squirrel cage induction motor?
No harmonic countermeasures are required.
R6 first test (second half) question [No.21]
Regarding low-voltage indoor wiring using metal wire pipe work, which of the following is inappropriate in terms of "technical standards for electrical equipment and their interpretation"?
However, the length of the line shall be 8m, and it shall be installed in the area where the office building is located.
Since the facility will be installed in a humid or wet location, Class D grounding work was performed.
R6 first test (second half) question [No.22]
Which of the following statements regarding cubicle-type high-voltage power receiving equipment is inappropriate according to the Japanese Industrial Standards (JIS)?
The CB type main circuit breaker is a combination of a disconnector and an overcurrent relay.
R6 first test (second half) question [No.23]
According to the "Technical Standards for Electrical Equipment and Their Interpretation," which of the following is inappropriate as a location for Class D grounding work?
Surge arresters installed on high-voltage electrical circuits
R6 first test (second half) question [No.24]
Which of the following is inappropriate in terms of "technical standards for electrical equipment and their interpretation" when it comes to construction of low-voltage house side power lines?
However, this excludes cases where the facility is installed in a wooden structure.
metal duct construction
R6 first test (second half) question [No.25]
According to the Fire Service Act, which of the following is incorrect regarding the installation location of a differential spot type detector for automatic fire alarm equipment?
However, the height of the mounting surface of the sensor shall be less than 4m.
boiler room
R6 first test (second half) question [No.26]
Which of the following statements regarding emergency bells installed in fire-protected properties is incorrect according to the Fire Service Act?
An emergency bell is an evacuation facility.
R6 first test (second half) question [No.27]
Which of the following is the least relevant device for use in building access control equipment?
voice guidance device
R6 first test (second half) question [No.28]
Which of the overhead contact line classification devices is the most inappropriate for electrical classification?
air joint
R6 first test (second half) question [No.29]
Which of the following is the most inappropriate description regarding the function of a power conditioner in a solar power generation system?
Ability to convert light energy into electricity
R6 first test (second half) question [No.30]
Which of the following is the most inappropriate statement regarding the elevated water tank system for water supply equipment in buildings?
Water supply pressure changes according to changes in water main pressure.
R6 first test (second half) question [No.31]
Which of the following is the most inappropriate foundation ground improvement method for compacting the soil?
caisson method
R6 first test (second half) question [No.32]
Which of the following is the least relevant safety device for mobile cranes used in construction work?
cargo lifting equipment
R6 first test (second half) question [No.33]
Which of the following is the most inappropriate method for assembling an overhead power transmission line tower?
Infeed method
R6 first test (second half) question [No.34]
Which of the following is the most inappropriate description regarding railroad tracks?
The third rail is used as a return track from the vehicle.
R6 first test (second half) question [No.35]
Which of the following is incorrect in the Japanese Industrial Standards (JIS) regarding the combination of types and cross-sectional shapes of hot-strength rolled sections?
R6 first test (second half) question [No.36]
Which combination of wiring diagram symbols and names for telephone and information equipment is incorrect according to the Japanese Industrial Standards (JIS)?
R6 first test (second half) question [No.37]
Which of the following is the least relevant thing to check when planning to bring large equipment onto the rooftop?
Test report for imported equipment
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