Question

what is semiconductor diode? how its terminal are being checked ?​

Answer 1

Answer:

Checking of Diode Terminals

Lead P is positive, and the Q is negative. To check the terminal of the diode, it is connected to the leads P and Q as shown in the above figure. If the diode conducts and the meter gives deflection, then the terminal A of the diode is positive (anode) and B is negative (cathode).

Answer 2

Answer:

A semiconductor diode is a diode made of semiconductor material, most often silicon. It's kind of like a door for electricity to move through, but it only opens one way. A diode is a device for controlling electrical currents so that they only flow the desired way (the way the engineer wants them to).

how its terminal are being checked in the above attachment⬆️⬆️⬆️