A resistance of 7 ohm is connected in series with an inductance of 31.8mH. The circuit is connected to a 100V 50Hz sinusoidal supply. Calculate the voltage across the resistor.(a) 31.8V(b) 57.4V(c) 67.3V(d) 78.2VI got this question in my homework.Question is from Resistance and Inductance in Series topic in portion Single Phase Series Circuits of Basic Electrical Engineering

A resistance of 7 ohm is connected in series with an inductance of 31.

1.	A resistance of 7 ohm is connected in series with an inductance of 31.8mH. The circuit is connected to a 100V 50Hz sinusoidal supply. Calculate the voltage across the resistor.(a) 31.8V(b) 57.4V(c) 67.3V(d) 78.2VI got this question in my homework.Question is from Resistance and Inductance in Series topic in portion Single Phase Series Circuits of Basic Electrical Engineering
Answer» The correct ANSWER is (b) 57.4V Easiest EXPLANATION: XL=2πfL = 10 ohm. Z^2=(R^2+XL^2) Therefore, the total impedance Z = 12.2ohm. V=IZ, therefore I=V/Z=100/12.2 = 8.2A.Voltage ACROSS resistor = 8.27 = 57.4V.

Discussion

No Comment Found

Related InterviewSolutions

What is the relation between reactance, resistance and impedance?(a) Z=R+jX(b) Z=R+X(c) Z=R-X(d) Z=R-jXI got this question in an interview.My doubt stems from Current and Voltage in a Capacitive Circuit topic in division Single Phase Series Circuits of Basic Electrical Engineering
For an RL circuit, the phase angle is always ________(a) Positive(b) Negative(c) 0(d) 90The question was asked in a national level competition.My doubt stems from Resistance and Inductance in Series in chapter Single Phase Series Circuits of Basic Electrical Engineering
What is the resonance frequency of ac circuit?(a) 1/√LC(b) √(L/C)(c) √LC(d) LCI got this question by my college professor while I was bunking the class.Question is taken from Alternating Current in a Capacitive Circuit in portion Single Phase Series Circuits of Basic Electrical Engineering
What is the frequency in resonance condition?(a) Minimum(b) Maximum(c) Cannot be determined(d) ZeroThe question was posed to me by my college director while I was bunking the class.Enquiry is from Alternating Current in a Capacitive Circuit topic in section Single Phase Series Circuits of Basic Electrical Engineering
Find the total voltage applied in a series RLC circuit when i=3mA, VL=30V, VC=18V and R=1000 ohms.(a) 3.95V(b) 51V(c) 32.67V(d) 6.67VThis question was addressed to me in a national level competition.My query is from Alternating Current in an RLC Circuit topic in section Single Phase Series Circuits of Basic Electrical Engineering
The combination of resistance and reactance known as ___________(a) Susceptance(b) Impedance(c) Conductance(d) AdmittanceThe question was posed to me at a job interview.This interesting question is from Current and Voltage in a Capacitive Circuit in section Single Phase Series Circuits of Basic Electrical Engineering
What is the resonance condition?(a) When XL>XC(b) When XL
What is tanϕ for RC circuit?(a) XC/R(b) XL/R(c) R/Z(d) Z/RI have been asked this question during an online exam.Query is from Alternating Current in a Capacitive Circuit in division Single Phase Series Circuits of Basic Electrical Engineering
What is impedance at resonance?(a) maximum(b) minimum(c) zero(d) cannot be determinedI got this question by my school teacher while I was bunking the class.My query is from Alternating Current in a Capacitive Circuit in chapter Single Phase Series Circuits of Basic Electrical Engineering
In an RLC series phasor, we start drawing the phasor from which quantity?(a) Voltage(b) Resistance(c) Impedance(d) CurrentThe question was asked in an internship interview.This interesting question is from Alternating Current in an RLC Circuit in chapter Single Phase Series Circuits of Basic Electrical Engineering

Discussion

No Comment Found

Related InterviewSolutions

Reply to Comment