# Electronic Circuit Question.

Discussion in 'Homework Help' started by RRITESH KAKKAR, Dec 24, 2015.

1. ### RRITESH KAKKAR Thread Starter Senior Member

Jun 29, 2010
2,831
89
how to know or calculate this.
Which component is shorted?

2. ### RRITESH KAKKAR Thread Starter Senior Member

Jun 29, 2010
2,831
89
The current through R1 will be: 48mA calculated.

Last edited: Dec 24, 2015
sandeep mukke likes this.
3. ### RRITESH KAKKAR Thread Starter Senior Member

Jun 29, 2010
2,831
89
Which component is open?

4. ### hp1729 Well-Known Member

Nov 23, 2015
1,856
207
Not that resistors short out, but If R1 were shorted you would not see that 2.4 Amps through the following stages. Likewise R2 and R3, so it must be R4.

RRITESH KAKKAR likes this.
5. ### RRITESH KAKKAR Thread Starter Senior Member

Jun 29, 2010
2,831
89
In a 20 Vac series RC circuit, if 20 V is measured across the resistor and 40 V is measured across the capacitor, the applied voltage is:

6. ### RRITESH KAKKAR Thread Starter Senior Member

Jun 29, 2010
2,831
89
i got the answer but don't understand 20Vac meaning here.

7. ### RRITESH KAKKAR Thread Starter Senior Member

Jun 29, 2010
2,831
89
What is the angle theta value for a 5.6 F capacitor and a 50-ohm resistor in series with a 1.1 kHz, 5 Vac source?

After solving:
P Active power across R=0.5W
Q Reactive C= 0.967VAR
So, S=√(P²+Q²)
S=1.10VA

cosΦ=Base /hyp.
cosΦ=0.5/1.10=62.9

8. ### Hypatia's Protege Distinguished Member

Mar 1, 2015
2,722
1,166
First you're going to have to tell me what the rectangles represent?

If ammeters what is their terminal to terminal resistance?

Last edited: Dec 24, 2015
RRITESH KAKKAR likes this.
9. ### Hypatia's Protege Distinguished Member

Mar 1, 2015
2,722
1,166
@RRITESH KAKKAR --- You know full well how to calculate reactance and convert between rectangular and polar formats!

RRITESH KAKKAR likes this.
10. ### RRITESH KAKKAR Thread Starter Senior Member

Jun 29, 2010
2,831
89
Sinθ=imaginary(Reactive)/Real(Active)
Sinθ=0.967/0.5=1.9 error

11. ### RRITESH KAKKAR Thread Starter Senior Member

Jun 29, 2010
2,831
89
What is the phase shift between the voltage across the resistor and the voltage from the source?

12. ### shteii01 AAC Fanatic!

Feb 19, 2010
3,297
482
Convert C1 into impedance.
Now you have two "resistors" in series, also known as Voltage Divider.
Apply voltage divider formula to R1 to find voltage across R1 in complex form.
Extract the angle from the complex voltage of R1.

13. ### JoeJester AAC Fanatic!

Apr 26, 2005
3,321
1,114
Not to be particular but there is a little bit of difference between the 2.4 amperes you quoted and the 2.4 GigaAmperes the simulation shows. However, the troubleshooting was correct.

Hypatia's Protege likes this.

Apr 26, 2005
3,321
1,114
15. ### WBahn Moderator

Mar 31, 2012
17,461
4,701
RRITESH,

PLEASE, one problem at a time (in a given thread). You posted several problems and have created utter chaos because no one can keep track of which problem a given response is for.

Start ONE thread on ONE problem, provide YOUR best attempt to solve that ONE problem, and focus on that ONE problem until you understand the solution.

Hypatia's Protege likes this.
16. ### WBahn Moderator

Mar 31, 2012
17,461
4,701
This makes no sense at all. Leaving aside the fact that your ammeters are should 2.4 GA (i.e., 2,400,000,000 amperes), the fact that they are all the same means NO current is flowing downward through ANY of the resistors that are connected between meters. Hence R1, R2, and R2 are ALL acting like open circuits. Then assuming that your 2.400G should be 2.400m, R4 is behaving like a 5 kΩ resistor.

17. ### JoeJester AAC Fanatic!

Apr 26, 2005
3,321
1,114
@RRITESH KAKKAR

A more realistic problem for the first one would be stated like the attached as your simulations perfect supply is capable of GigaAmperes:

• ###### AAC-HW-151224-DC-ckt-ts001.png
File size:
7.7 KB
Views:
204
RRITESH KAKKAR likes this.
18. ### RRITESH KAKKAR Thread Starter Senior Member

Jun 29, 2010
2,831
89

How to know there is no output seen?
so, one does not know whether circuit working or not?

19. ### #12 Expert

Nov 30, 2010
16,033
6,545
4 outputs are seen. They are labeled as 12A after each amp meter.
YOU don't know, but only because you can't read the labels.

20. ### Hypatia's Protege Distinguished Member

Mar 1, 2015
2,722
1,166
Aye! That was my principal issue with the 'rectangular' blocks!