Can someone answer these?

[LukeeeeBennett]

I've been given a presentation to go through and these questions don't have any answers, so they're currently useless to me. I was wondering if you guys could answer them for me?


https://i.imgur.com/MU1OBIg.jpg


https://i.imgur.com/Rl35WAt.jpg

 

[dougy83]

Why don't you post your working and answers, and we can go from there?

 

[jpanhalt]

It seems the purpose of this assignment is for you to answer them. What are your thoughts on the answers? Many people here will then help you come to the correct solutions, if necessary.

John

 

[panic mode]

do you know how each of the components in the circuits work?

 

[WTP Pepper]

OK. A few clues about diodes.
1. They only conduct one way. The way the arrow on their symbol is. They do not conduct anything (to light a bulb) in the opposite direction.
2. When they do conduct they lose 0.7v across them
3. So if they are in shunt mode (in parallel) with something and conducting, you will not get more than 0.7 across them.

Question 2 is simply Ohms law.

If it's a Zener Diode, then it won't conduct anything until the Zener voltage is exceeded, then it will conduct. The voltage of a series Zener across the load will be your supply voltage minus the Zener voltage. Otherwise it behaves as a normal diode.