Questions & Answers about यह स्पीड पोस्ट है।
यह means this. It is used for something near the speaker, so यह स्पीड पोस्ट है। means This is speed post or This is a speed post item, depending on context.
It is singular. The usual contrasting word is वह, which means that.
The traditional pronunciation is close to yah, but in everyday modern Hindi many speakers say something closer to yeh.
So this sentence is often said as yeh speed post hai in natural speech.
A learner should also know that यह can sound very similar to ये in conversation, but in standard writing यह is singular and ये is plural or respectful.
Hindi normally does not use articles like a, an, and the the way English does.
So यह स्पीड पोस्ट है is completely normal without any extra word.
If you want to emphasize one or make the classification a little more explicit, you can say यह एक स्पीड पोस्ट है। But in many situations, एक is unnecessary.