The following question (2) when k > 0, b > 0, the image of function y = KX + B does not pass through which quadrant? When k > 0, B < 0?

The following question (2) when k > 0, b > 0, the image of function y = KX + B does not pass through which quadrant? When k > 0, B < 0?

When k > 0, b > 0, the image of function y = KX + B does not pass through the fourth quadrant
When k > 0 and B < 0, the image of function y = KX + B does not pass through the second quadrant

What does yjv-4 * 50 + 1 * 25 mean?

YJ - XLPE insulation; V - PVC insulation or sheath; 4 * 50 + 1 * 25 - five core (4 pieces of 50 square mm + 1 piece of 25 square mm) Note: if not indicated, it refers to copper wire

Zr-yjv-4 * 25 + E16, according to which 4 * 25 is selected

4 * 25 E16 refers to four protective grounding wires with a cross section of 25mm2 and one 16mm2. It is selected according to the calculated current of the line, and whether the line voltage drop meets the requirements should also be checked

What do the two numbers of 300 / 500V on the wire mean

The former 300 means that the normal working voltage does not exceed 300V; the latter 500 means that the test voltage for a short time is 500V

What does 300 / 500V on the cable mean?

300 indicates that the rated power frequency voltage between the conductor for cable design and ground or metal shield is 300 v. 500 indicates that the rated power frequency voltage between the conductors for cable design is 500 v

What does the rated voltage of cable 300 / 500V mean and which is the rated voltage

The meaning of U0 / u in the national standard is: U0 refers to the voltage value of the cable core to the insulation shielding layer, that is, the main insulation voltage value of the cable, which can not be confused with the phase voltage; u refers to the line voltage value used by the cable. That is to say, the cables used by the lines with the same voltage level may have different U0, Generally, the U0 of neutral point grounding system is lower than that of ungrounded system. The voltage withstand test is 2-2.5 times of U0

Wire 2x0.75300/500v what do you mean

2x0.75 means 2 cores, and the cross-sectional area of each core is 0.75mm;;
300 / 500V is the rated voltage

What's the meaning of 300 / 500V, 400 / 750V on the outer surface of cable?

300 / 500V, 300 refers to the upper limit voltage of the power supply that the cable can bear for a long time, and 500 refers to the voltage of the power supply that the cable can bear for a short time, so as to ensure that the insulation of the cable will not be damaged in a short time
300 / 500V, 400 / 750V, these two specifications are suitable for single-phase voltage cables,
63 / 1kV, which is suitable for cables under three-phase power voltage,

What's the meaning of yjv-1kv-4 * 70 + 1 * 35 cable in pipe

Yjv-1kv: type and name of cable polyethylene insulation sheath of copper core
4 * 70 + 1 * 35: it means that the cable is 5-core, 4 pieces of 70 square mm and 1 piece of 35 square mm

Yjv22-1x4-1kv, yjv22-2x4-1kv, yjv22-2x25-1kv, yjv22-3x70-35kv,

YJV22-1X4-1KV：5.54；YJV22-1.5X4-1KV：7.46；YJV22-2.5X4-1KV：10.68；YJV22-2X25-1KV：47.92；YJV22-3X70-35KV：175.5