What is the answer to the electrical examination of property maintenance?

In life, electricity is needed anytime and anywhere, and it is becoming more and more important in our life. Therefore, property maintenance electrician has become the most important part of property work. The following is the property maintenance electrician test paper I compiled for you, I hope it will be useful to you!

There are three commonly used methods to fill in the blanks in the examination paper of property maintenance electrician: analytical method, curve method and rotation vector method.

2. Electric injury is the harm to human body caused by thermal effect, chemical effect and mechanical effect of current.

3. Safety color is the color that expresses the meaning of safety information, indicating prohibition, warning, instruction, prompt, etc.

4. The oil in the oil circuit breaker is used for arc extinguishing.

5. The electromagnetic part of power transformer is composed of iron core and coil, and its basic principle is electromagnetism and the action of electromagnetism.

6. The structure of AC contactor is mainly composed of electromagnetic system, contact system and spring.

7. High-voltage power distribution devices include protective appliances and plastic appliances.

Property maintenance electrician test paper judgment question 1, electric power is the work done by electric field force in unit time. ( ? )

2. Electric branding is one of the characteristics of electric shock. ( ? )

3. The completed working ticket shall be kept for 3 months. ( ? )

4, general low-voltage equipment and lines, insulation resistance should be not less than 0.5M? . ( ? )

5. The maximum temperature of bare wire and plastic insulated wire is generally above 70O C (? )

6. High-voltage fuses have clear time-limit characteristics. ( ? )

7. After the gas relay of the transformer sends out an alarm signal, carefully check the outside of the transformer. ( ?

8. Check the knife switch. As long as the knife switch is opened, you can ensure safety. ( ? )

9, copper wire resistance is small, poor conductivity. ( ? )

10. The number of lights on each lighting branch should not exceed 10. ( ? )

Property maintenance electrician test paper multiple-choice questions 1, multimeter can't put the knob in _ _ _ _ _ _ _ _ _ _ _.

A, resistance B, maximum AC voltage C, neutral

2. The regular inspection of cable lines is generally _ _ _ _ _ _ _ _ _ _ times.

A, annual B, quarterly C, monthly

3, the greater the current through the melt, the melt melting time is _ _ _ _ _ _ _ _ _ _.

A, long b, short c, unchanged

4, capacitor layered installation is generally not more than _ _ _ _ _ _ _ _ _ layer, there can be no partition between layers.

A, B on the third floor, C on the fourth floor and the fifth floor

5. _ _ _ _ A class load shall be supplied by two independent power sources.

a、ⅰB、ⅱC、ⅲ

6. _ _ _ _ _ _ B _ _ _ _ _ can turn on and off the normal load current.

A, isolating switch b, load switch c, circuit breaker

7. Generally speaking, the protection angle of lightning rod is _ _ _ _ _ _ d _ _ _ _.

a、20O B、40O C、 10O~20O D、20O~30O

8. When using water to put out the fire, the distance between the water gun and the charged body should not be less than _ _ _ _ _ _ _ _ meters.

a、 1 B、0.5 C、0.7 D、0.6

9, outdoor lighting lamps and lanterns should generally not be less than _ _ _ _ _ meters.

a、 1 B、2 C、3 D、5

10, the current through the human body, _ _ _ _ _ _ A _ _ _ _ is the most dangerous.

A, left hand to foot b, right hand to foot c, left hand to right hand d, foot to foot

Brief answer to the property maintenance electrician test paper 1, how to do chest compressions?

2. What are the daily inspection items of safety appliances?

3. What is leakage protection?

4. What are the technical measures for electrical explosion protection?

5. What are the conditions for parallel operation of transformers?

6. What are the daily faults of AC contactors?

7, cage asynchronous motor step-down start method?