8 - Alternating Current Questions Answers

Thanks in advance for the solution. 
Asked By: TUSHAR GUPTA
is this question helpfull: 1 0 submit your answer
Joshi sir comment
Asked By: TUSHAR GUPTA
is this question helpfull: 0 0 submit your answer
Joshi sir comment
Sir please post the solution, thanks. 
Asked By: TUSHAR GUPTA
is this question helpfull: 0 0 submit your answer
Asked By: TUSHAR GUPTA
is this question helpfull: 0 0 submit your answer
Joshi sir comment
SIR the answer is given only D could you pls explain
Asked By: AYUSH PAINE
is this question helpfull: 1 0 submit your answer
Joshi sir comment

XC=50Ω and XL=100Ω are in parallel.  Resultant is 100Ω capacitance.  Now 100Ω capacitance and 100Ω inductance give reactance 0Ω and resistance is 100Ω. So only option D is correct. 

is impedence as same as resistanace in a circuit // and // are capacitive reactance and inductive reactance constant values(i.e. independant of value of current in ac circuit at any time)  ?? 

Asked By: AAYUSH TANEJA
is this question helpfull: 2 0 submit your answer
Joshi sir comment

Write the question with correct symbols

 

yes it is equivalent to resistance for that circuit

chock coil is used to

1) increase current

2) increase voltage

3) decrease current

4) decrease voltage

here we know power= IV  & chock coil is used to reduce the power loss , so here what vyl be the answer

Asked By: SARIKA SHARMA
is this question helpfull: 4 0 submit your answer
Joshi sir comment

chock coil in ac is the device equivalent to rheostat in dc, so it is used to increase current.

can you give me an idea of solving the parallel LC circuit? Also to find the phase difference between the I and E?

Asked By: NIKHIL VARSHNEY
is this question helpfull: 6 0 submit your answer
Joshi sir comment

1st make a 3 line circuit in which ac source, resistor with an inductor and resistor with a capacitor will be there in the three lines then divide total  current "I"

from AC into the two legs, equations will be 

e = L di1/dt + i1R  (1)

e =q2 / C + i2 R     (2)                                        here dq2 / dt = i2

now solve

 

Login Here

Username / Email :

Password :

Register | Forget Password