Hello, I would like to ask about the knowledge of electricians

Updated on society 2024-03-30
5 answers
  1. Anonymous users2024-02-07

    An electrician is a worker whose work is related to strong electricity.

  2. Anonymous users2024-02-06

    Hello, I would like to ask about the knowledge of electricians.

    Kiss! Hello, happy to answer your <>

    The basic knowledge of electrophiliacists: 1. Left zero right fire 2. Three-phase five-wire system with colors yellow, green, red, and light blue respectively represent U, V, W, and N protective grounding wire dual-color PE; 3. In the operation of the transformer, the current of each phase of the transformer should not exceed the fixed current of the forehead wheel; The maximum unbalanced current shall not exceed 25% of the rated current; After the transformer is put into operation, it should be overhauled regularly; 4. In the system of power supply of the same transformer, it is not suitable to mix protection grounding and protection zero. Electrician Basics 21

    The definition of the DC circuit circuit: It is the composition of the circuit through which the current passes: The circuit is composed of a power supply, a load, a wire, and a switch

    Load, wire, open and virtual external circuit: A section of circuit load inside the power supply: All electrical power supplies:

    The basic physical quantity of a device that can convert other forms of energy into electrical energy is the formation of an electric current: the free electrons in the conductor move regularly in a directional manner under the action of the electric field force to form an electric current. The conditions for the current to have:

    One is that there is a potential difference, and the other is that the circuit must be closed. Current Intensity: The magnitude of the current is expressed in terms of current intensity, and the base value is equal to the amount of charge passing through the conductor section per unit time, I hope mine can help you <>

    Do you have any other questions?

  3. Anonymous users2024-02-05

    Voltage equal: uoc=i1 r1=i2 r2 total current: i1+i2=4a parallel shunt:

    i1=r2 r1 i2=3a i2=1a, i1=3a parallel voltage: uoc=i1 r1=3a uoc=i2 r2=1a parallel equivalent resistance: ro=r1 r2 (r1+r2)=

  4. Anonymous users2024-02-04

    1a, (30-20) 10=2a, 1a at the red arrow, i=2-1=1a according to the law of shunting.

  5. Anonymous users2024-02-03

    im=220/20=11a

    The rms value i=im (root number 2) = 11 (root number 2) and the initial phase of the current is 60o

    The instantaneous value of the current scatter digging is expressed in the Bihong mode as i=[220sin(100 t+60o)] 11 =20sin(100 t+60o)a

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