Discuss Some questions from school exam. in the Commercial Electrical Advice area at ElectriciansForums.net

Welcome to ElectriciansForums.net - The American Electrical Advice Forum
Head straight to the main forums to chat by click here:   American Electrical Advice Forum

N

Nikiter

hi there, im taking a electronics course right now (do it at home type) and im stuck on 4 questions that im tired looking answeres for.....so this is why im here....to get help and if somebody could explain me the answeres for them.....that would be awesome

anyways lets get to it

#1
In a 70V speaker feed system, which of the following voltages obtained from a tap on the line trasformer will cause 8Ohm speaker to consume 8W?

A. 6.3V
B. 10V
C. 5.6V
D. 8V


#2
A battery that you CANNOT recharge will contain

A. a acid electrolyte
B. an alkaline electrolyte (i believe this is the right answer but check me)
C. a carbon electrode
D. a nickel electrode

#3
If an 1100Hz signal and 6000Hz signal are fed simultneously to the input of an amplifier, the four requencies at the output (not including harmonics) will be

A. 1100Hz, 600Hz, 550Hz, and 3000Hz
B. 1100Hz, 600Hz, 2450Hz, and 3550Hz
C. 1100Hz, 600Hz, 4900Hz, and 7100Hz
D. 1100Hz, 600Hz, 9800Hz, and 24000Hz

#4
When an FM radio transmitter is modulated, what happens to the power output on the power output meter?

A. It rises slightly
B. It doubles
C. It remains constant
D. It falls

I would really apreciate your help.
Thank you all.
 
Last edited by a moderator:

Reply to Some questions from school exam. in the Commercial Electrical Advice area at ElectriciansForums.net

OFFICIAL SPONSORS

Electrical Goods - Electrical Tools - Brand Names Electrician Courses Green Electrical Goods PCB Way Electrical Goods - Electrical Tools - Brand Names Pushfit Wire Connectors Electric Underfloor Heating Electrician Courses
These Official Forum Sponsors May Provide Discounts to Regular Forum Members - If you would like to sponsor us then CLICK HERE and post a thread with who you are, and we'll send you some stats etc
This website was designed, optimised and is hosted by Untold Media. Operating under the name Untold Media since 2001.
Back
Top
AdBlock Detected

We get it, advertisements are annoying!

Sure, ad-blocking software does a great job at blocking ads, but it also blocks useful features of our website. For the best site experience please disable your AdBlocker.

I've Disabled AdBlock