195 + Interview Questions in Useful Theorems In Circuit Analysis in Network Theory Page 4 InterviewSolution

151.	The following circuit satisfies Reciprocity Theorem.(a) True(b) FalseI had been asked this question by my school principal while I was bunking the class.This question is from Reciprocity Theorem topic in division Useful Theorems in Circuit Analysis of Network Theory
Answer» CORRECT answer is (a) True For EXPLANATION: The ratio of response to excitation before the source is replaced is equal to 0.0715. And the ratio of response to excitation before the source is replaced is equal to 0.0715. So, the circuit satisfies the Reciprocity THEOREM.

Discussion

152.	The circuit which satisfies Reciprocity Theorem is called?(a) Short circuit(b) Open circuit(c) Linear circuit(d) Non-linear circuitThe question was posed to me in an interview for internship.The doubt is from Reciprocity Theorem in portion Useful Theorems in Circuit Analysis of Network Theory
Answer» Correct option is (C) Linear circuit To EXPLAIN: The circuit which satisfies RECIPROCITY Theorem is called linear circuit. A linear circuit is an electronic circuit in which, for a SINUSOIDAL input voltage of frequency f, any steady-state output of the circuit (the current through any component, or the voltage between any two points) is also sinusoidal with frequency f.

Discussion

153.	Find the current through the 2Ω(c-d) resistor in the circuit shown below.(a) 0.143(b) 1.43(c) 14.3(d) 143The question was asked during an online interview.The origin of the question is Reciprocity Theorem topic in section Useful Theorems in Circuit Analysis of Network Theory
Answer» The correct choice is (B) 1.43 To explain: TOTAL resistance in the circuit = 2+[3\|\|(2+2│├\|2)]=3.5Ω. The current DRAWN by the circuit(It)=20/3.5=5.71Ω. The current drawn by 2Ω RESISTOR = 1.43A.

Discussion

154.	For the Reciprocity Theorem to satisfy the ratio of response to excitation before and after the source is replaced should be?(a) different(b) same(c) before source is replaced is greater than after the source is replaced(d) before source is replaced is less than after the source is replacedThe question was posed to me in an internship interview.My enquiry is from Reciprocity Theorem in section Useful Theorems in Circuit Analysis of Network Theory
Answer» Correct choice is (B) same Easiest explanation: For the RECIPROCITY Theorem to satisfy the ratio of response to excitation before and after the source is replaced should be same and if that condition SATISFIES the reciprocity theorem is VALID for the given circuit.

Discussion

155.	To check for the Reciprocity Theorem we consider ______ of response to excitation.(a) ratio(b) addition(c) product(d) subtractionI had been asked this question in final exam.The origin of the question is Reciprocity Theorem in portion Useful Theorems in Circuit Analysis of Network Theory
Answer» Correct answer is (a) ratio For explanation I WOULD SAY: For the Reciprocity THEOREM to satisfy the ratio of RESPONSE to the excitation of the circuit should be equal to the ratio of response to excitation after the SOURCE is replaced.

Discussion

156.	Find the voltage drop across 5Ω resistor in the circuit shown below.(a) 33(b) 34(c) 35(d) 36The question was asked by my school teacher while I was bunking the class.Question is taken from Norton’s Theorem topic in chapter Useful Theorems in Circuit Analysis of Network Theory
Answer» Right OPTION is (d) 36 Best explanation: The voltage drop ACROSS 5Ω resistor in the circuit is the product of CURRENT and resistance => V = 5×7.16 = 35.8 ≅ 36V.

Discussion

157.	Find the current through 5Ω resistor in the circuit shown below.(a) 7(b) 8(c) 9(d) 10The question was asked during an interview.My doubt stems from Norton’s Theorem topic in portion Useful Theorems in Circuit Analysis of Network Theory
Answer» Right ANSWER is (a) 7 For explanation: To solve for Norton’s current we have to find the current PASSING through the terminals A and B. Short CIRCUITING the terminals a and b I=11.16×8.96/(5+8.96) = 7.16A.

Discussion

158.	Find the current flowing between terminals A and B obtained in the equivalent Nortan’s circuit.(a) 8(b) 9(c) 10(d) 11This question was addressed to me in class test.This is a very interesting question from Norton’s Theorem in chapter Useful Theorems in Circuit Analysis of Network Theory
Answer» CORRECT answer is (d) 11 Easiest EXPLANATION: To solve for NORTON’s current we have to find the current passing through the terminals A and B. Short CIRCUITING the terminals a and b, I=100/((6×10)/(6+10)+(15×8)/(15+8))=11.16 ≅ 11A.

Discussion

159.	Find the equivalent resistance between terminals A and B obtained in the equivalent Nortan’s circuit.(a) 8(b) 9(c) 10(d) 11I got this question by my college director while I was bunking the class.My doubt is from Norton’s Theorem in section Useful Theorems in Circuit Analysis of Network Theory
Answer» The correct choice is (b) 9 The explanation is: The resistance at TERMINALS AB is the PARALLEL COMBINATION of the 10Ω resistor and the 6Ω resistor and parallel combination of the 15Ω resistor and the 8Ω resistor => R=(10×6)/(10+6)+(15×8)/(15+8)=8.96≅9Ω.

Discussion

160.	Find the equivalent resistance between terminals A and B in the following circuit.(a) 3(b) 3.03(c) 3.33(d) 3.63This question was addressed to me by my college professor while I was bunking the class.The doubt is from Norton’s Theorem topic in portion Useful Theorems in Circuit Analysis of Network Theory
Answer» Correct answer is (c) 3.33 For EXPLANATION I WOULD SAY: The resistance at terminals AB is the parallel COMBINATION of the 10Ω resistor and the 5Ω resistor => R = ((10×5))/(10+5) = 3.33Ω.

Discussion

161.	Find the current flowing between terminals A and B in the following circuit.(a) 1(b) 2(c) 3(d) 4The question was posed to me during an interview.This interesting question is from Norton’s Theorem in chapter Useful Theorems in Circuit Analysis of Network Theory
Answer» Correct choice is (d) 4 Explanation: SHORT circuiting TERMINALS A and B, 20-10(I1)=0, I1=2A. 10-5(I2), I2=2A. Current flowing through terminals A and B = 2+2 = 4A.

Discussion

162.	Find the voltage drop across 6Ω resistor in the circuit shown below.(a) 6.58(b) 7.58(c) 8.58(d) 9.58The question was posed to me in an international level competition.Query is from Norton’s Theorem topic in chapter Useful Theorems in Circuit Analysis of Network Theory
Answer» CORRECT answer is (c) 8.58 For explanation I would SAY: The voltage across the 6Ω resistor is V = 1.43×6 = 8.58V. So the current and voltage have the same VALUES both in the original CIRCUIT and Norton’s EQUIVALENT circuit.

Discussion

163.	Find the current through 6Ω resistor in the circuit shown below.(a) 1(b) 1.43(c) 2(d) 2.43This question was posed to me at a job interview.My doubt stems from Norton’s Theorem in section Useful Theorems in Circuit Analysis of Network Theory
Answer» CORRECT CHOICE is (b) 1.43 To EXPLAIN: The current passing through the 6Ω resistor and the voltage ACROSS it DUE to Norton’s equivalent circuit is I = 4×3.33/(6+3.33) = 1.43A.

Discussion

164.	Find the equivalent resistance between terminals A and B of the circuit shown below.(a) 0.33(b) 3.33(c) 33.3(d) 333The question was asked in an online quiz.The doubt is from Norton’s Theorem in chapter Useful Theorems in Circuit Analysis of Network Theory
Answer» Correct ANSWER is (b) 3.33 The best I can EXPLAIN: Norton’s resistance is equal to the parallel combination of both the 5Ω and 10Ω RESISTORS that is R = (5×10)/15 = 3.33Ω.

Discussion

165.	Find the current through 5Ω resistor in the following circuit.(a) 0.1(b) 0.2(c) 0.3(d) 0.4This question was posed to me in my homework.My enquiry is from Thevenin’s Theorem topic in portion Useful Theorems in Circuit Analysis of Network Theory
Answer» The correct ANSWER is (b) 0.2 For EXPLANATION: The EQUIVALENT THEVENIN’s circuit for the circuit shown above is I=2.7/(8.96+5)=0.193A≅0.2A.

Discussion

166.	Find the equivalent thevenin’s resistance between terminals A and B in the circuit shown below.(a) 6(b) 7(c) 8(d) 9I have been asked this question in final exam.My query is from Thevenin’s Theorem topic in portion Useful Theorems in Circuit Analysis of Network Theory
Answer» Correct choice is (d) 9 To EXPLAIN: To FIND Rth, two voltage SOURCES are removed and REPLACED with short CIRCUIT => Rab=(6×10)/(6+10)+(8×15)/(8+15)=8.96≅9V.

Discussion

167.	Find the current flowing between terminals A and B of the circuit shown below.(a) 1(b) 2(c) 3(d) 4I had been asked this question at a job interview.This interesting question is from Norton’s Theorem topic in portion Useful Theorems in Circuit Analysis of Network Theory
Answer» Right ANSWER is (d) 4 For explanation: The MAGNITUDE of the current in Norton’s EQUIVALENT circuit is equal to the current passing through the short circuited terminals that are I=20/5=4A.

Discussion

168.	Find the equivalent thevenin’s resistance between terminals A and B in the following circuit.(a) 6(b) 6.25(c) 6.5(d) 6.75I got this question during an internship interview.Question is taken from Thevenin’s Theorem topic in chapter Useful Theorems in Circuit Analysis of Network Theory
Answer» RIGHT choice is (d) 6.75 The explanation: To find Rth, two voltage SOURCES are REMOVED and REPLACED with short circuit => Rth=(10×6)/(10+6)+3=6.75Ω.

Discussion

169.	Determine the equivalent thevenin’s voltage between terminals ‘a’ and ‘b’ in the circuit shown below.(a) 0.7(b) 1.7(c) 2.7(d) 3.7This question was posed to me in examination.The above asked question is from Thevenin’s Theorem in division Useful Theorems in Circuit Analysis of Network Theory
Answer» The CORRECT option is (c) 2.7 For explanation I would say: The VOLTAGE at TERMINAL a is Va=(100×6)/16=37.5V, The voltage at terminal b isVb=(100×8)/23=34.7V. So the voltage across the terminals AB is Vab=Va-Vb=37.5-34.7=2.7V.

Discussion

170.	Find the equivalent thevenin’s resistance between terminals A and B in the circuit shown below.(a) 333(b) 33.3(c) 3.33(d) 0.333I have been asked this question in unit test.My query is from Thevenin’s Theorem in chapter Useful Theorems in Circuit Analysis of Network Theory
Answer» CORRECT choice is (c) 3.33 Explanation: To find Rth, TWO VOLTAGE sources are removed and REPLACED with short circuit. The resistance at terminals AB then is the parallel combination of the 10Ω RESISTOR and 5Ω resistor =>Rth=(10×5)/15=3.33Ω.

Discussion

171.	Determine the equivalent thevenin’s voltage between terminals A and B in the circuit shown below.(a) 0.333(b) 3.33(c) 33.3(d) 333This question was posed to me by my college professor while I was bunking the class.The query is from Thevenin’s Theorem in chapter Useful Theorems in Circuit Analysis of Network Theory
Answer» The correct ANSWER is (c) 33.3 To explain: LET US find the voltage drop across TERMINALS A and B. 50-25=10I+5I => I=1.67A. Voltage drop across 10Ω resistor = 10×1.67=16.7V. So, Vth=VAB=50-V=50-16.7=33.3V.

Discussion

172.	Determine the equivalent thevenin’s voltage between terminals A and B in the circuit shown below.(a) 5(b) 15(c) 25(d) 35The question was asked by my school principal while I was bunking the class.This intriguing question comes from Thevenin’s Theorem in chapter Useful Theorems in Circuit Analysis of Network Theory
Answer» Correct option is (C) 25 Easy explanation: Current through 3Ω RESISTOR is 0A. The current through 6Ω resistor =(50-10)/(10+6)=2.5A. The voltage drop ACROSS 6Ω resistor = 25×6=15V. So the voltage across TERMINALS A and B = 0+15+10 = 25V.

Discussion

173.	Consider the circuit shown below. Find the thevenin’s resistance between terminals A and B.(a) 1(b) 2(c) 1.7(d) 2.7I had been asked this question by my college director while I was bunking the class.Query is from Thevenin’s Theorem in section Useful Theorems in Circuit Analysis of Network Theory
Answer» The CORRECT choice is (C) 1.7 The explanation: The RESISTANCE into the OPEN CIRCUIT terminals is equal to the thevenin’s resistance => Rth = (12×2)/14 = 1.71Ω.

Discussion

174.	Consider the circuit shown below. Find the current flowing through 24Ω resistor.(a) 0.33(b) 0.66(c) 0(d) 0.99The question was asked in an internship interview.The question is from Thevenin’s Theorem topic in portion Useful Theorems in Circuit Analysis of Network Theory
Answer» The correct choice is (a) 0.33 The explanation: The EQUIVALENT THEVENIN’s MODEL of the circuit shown is I=8.57/(2.4+1.71)=0.33A.

Discussion

175.	Consider the circuit shown below. Find the equivalent Thevenin’s voltage between nodes A and B.(a) 8(b) 8.5(c) 9(d) 9.5I have been asked this question in an interview.This interesting question is from Thevenin’s Theorem in chapter Useful Theorems in Circuit Analysis of Network Theory
Answer» Correct answer is (b) 8.5 Best EXPLANATION: The THEVENIN’s voltage is EQUAL to the OPEN circuit voltage across the terminals AB that is across 12Ω resistor. Vth = 10×12/14 = 8.57V.

Discussion

176.	Find the voltage across 2Ω resistor in the circuit shown below using Superposition theorem.(a) 1(b) 2(c) 3(d) 4The question was asked during a job interview.Enquiry is from Superposition Theorem in portion Useful Theorems in Circuit Analysis of Network Theory
Answer» Correct ANSWER is (C) 3 To elaborate: The voltage across 2Ω resistor is the algebraic sum of the voltages obtained by considering individual sources. V = 1.5+1.5 = 3V.

Discussion

177.	Find the voltage across 2Ω resistor due to 20V source in the following circuit.(a) 0.5(b) 0(c) 1(d) 1.5The question was posed to me in an interview.My query is from Superposition Theorem in portion Useful Theorems in Circuit Analysis of Network Theory
Answer» Correct CHOICE is (d) 1.5 Explanation: The VOLTAGE at node A is (V-20)/20+(V-10)/10+V/2=0 => V=3.07V. Now short circuiting 20V SOURCE, (V-10)/10+V/20+V/2=0 => V=1.5V.

Discussion

178.	Find the voltage across 2Ω resistor due to 20V source in the circuit shown below.(a) 1(b) 1.5(c) 2(d) 2.5This question was posed to me in an online quiz.My question is taken from Superposition Theorem topic in portion Useful Theorems in Circuit Analysis of Network Theory
Answer» Right option is (b) 1.5 The explanation: The voltage at NODE A in the figure is (V-20)/20+(V-10)/10+V/2=0 => V=3.07V. Now SHORT circuiting 10V SOURCE, (V-20)/20+V/2+V/10=0 => V=1.5V.

Discussion

179.	In the figure shown below. Find the voltage across 2Ω resistor due to all source using Superposition theorem.(a) 3.41(b) -3.41(c) 3.14(d) -3.14This question was posed to me during an interview.This intriguing question comes from Superposition Theorem in chapter Useful Theorems in Circuit Analysis of Network Theory
Answer» Right answer is (b) -3.41 For explanation: The ALGEBRAIC sum of all the voltages obtained by CONSIDERING individual sources is the VOLTAGE across 2Ω RESISTOR. V = 0.97-2.92-1.46 = -3.41V.

Discussion

180.	Find the voltage across 2Ω resistor due to 2A source in the following figure.(a) -1(b) 1(c) 1.46(d) -1.46This question was posed to me during an online exam.Asked question is from Superposition Theorem in section Useful Theorems in Circuit Analysis of Network Theory
Answer» Correct CHOICE is (d) -1.46 Easiest EXPLANATION: SHORT circuiting both 10V, 20V sources, The CURRENT through 2Ω resistor is 2× 5/(5+8.67)=0.73A. The voltage across 2Ω resistor is -0.73×2 = -1.46V.

Discussion

181.	Find the voltage across 2Ω resistor due to 20V source in the following figure.(a) -2.92(b) 2.92(c) 1.92(d) -1.92This question was posed to me during an internship interview.Question is taken from Superposition Theorem topic in portion Useful Theorems in Circuit Analysis of Network Theory
Answer» The correct ANSWER is (a) -2.92 The best explanation: Short CIRCUITING 10V SOURCE, open circuiting 2A source, The voltage at node A is (V-20)/7+V/20+V/10=0 => V = 9.76V. Now the voltage across 2Ω resistor is (V-20)/7×2=-2.92V.

Discussion

182.	Consider the circuit shown below. Find the voltage across 2Ω resistor due to the 10V voltage source using Superposition theorem.(a) 0(b) 1(c) 2(d) 3The question was posed to me during an interview for a job.I'm obligated to ask this question of Superposition Theorem topic in section Useful Theorems in Circuit Analysis of Network Theory
Answer» Correct choice is (b) 1 The explanation: Short circuiting 20V source, OPEN circuiting 2A source, Voltage at NODE A is (V-10)/10+V/20+V/7=0 => V=3.41V. => The voltage across 2Ω resistor isV/(7)×2=0.97V≅1V.

Discussion

183.	In the circuit shown, find the current through 4Ω resistor using Superposition theorem.(a) 4(b) 5(c) 6(d) 7I have been asked this question during an internship interview.The above asked question is from Superposition Theorem topic in portion Useful Theorems in Circuit Analysis of Network Theory
Answer» The correct OPTION is (B) 5 To elaborate: Considering the voltage source 20V, 5A current source is OPEN circuited. Now current through 3Ω resistor is20/(5+4)=2.22A. Now considering the current source 5A, 20V voltage source is short circuited. No current through 3Ω resistor IS5 × 5/(4+5)=2.78A. Now finally the current through 3Ω resistor is 2.22 + 2.78 = 5A.

Discussion

184.	In Superposition theorem, while considering a source, all other current sources are?(a) short circuited(b) change its position(c) open circuited(d) removed from the circuitThe question was asked in final exam.My question is from Superposition Theorem in division Useful Theorems in Circuit Analysis of Network Theory
Answer» RIGHT choice is (c) open circuited Easy explanation: In Superposition theorem, while considering a source, all other CURRENT sources are open circuited. Superposition theorem is not valid for power responses. It is APPLICABLE only for COMPUTING voltage and current responses.

Discussion

185.	In Superposition theorem, while considering a source, all other voltage sources are?(a) open circuited(b) short circuited(c) change its position(d) removed from the circuitThe question was posed to me during an interview for a job.The doubt is from Superposition Theorem topic in division Useful Theorems in Circuit Analysis of Network Theory
Answer» Right CHOICE is (b) SHORT circuited Explanation: In Superposition theorem, while CONSIDERING a source, all other VOLTAGE sources are short circuited. This theorem is valid for linear SYSTEMS.

Discussion

186.	Find the equivalent resistance between node 1 and node 2 in the star connected circuit shown below.(a) 2(b) 29(c) 30(d) 31This question was addressed to me in unit test.This intriguing question originated from Star-Delta Transformation in chapter Useful Theorems in Circuit Analysis of Network Theory
Answer» The correct option is (b) 29 To elaborate: The EQUIVALENT RESISTANCE between node 1 and node 3 in the star connected circuit is R =(10×10+10×11+11×10)/11=29Ω.

Discussion

187.	Find the equivalent resistance between node 1 and node 3 in the star connected circuit shown below.(a) 30(b) 31(c) 32(d) 33The question was asked in an interview for job.Enquiry is from Star-Delta Transformation in division Useful Theorems in Circuit Analysis of Network Theory
Answer» CORRECT choice is (C) 32 To elaborate: The EQUIVALENT RESISTANCE between node 1 and node 3 in the star connected circuit is R =(10×10+10×11+11×10)/10=32Ω.

Discussion

188.	Find the equivalent resistance at node C in the delta connected circuit shown below.(a) 3.66(b) 4.66(c) 5.66(d) 6.66This question was posed to me in class test.I'd like to ask this question from Star-Delta Transformation in chapter Useful Theorems in Circuit Analysis of Network Theory
Answer» Right option is (B) 4.66 The explanation is: PERFORMING DELTA to star TRANSFORMATION we obtain the equivalent resistance at NODE A isR =(12×13)/(11+12+13)=4.66Ω.

Discussion

189.	Find the equivalent resistance at node A in the delta connected circuit shown in the figure below.(a) 1(b) 2(c) 3(d) 4I have been asked this question during an interview.I'm obligated to ask this question of Star-Delta Transformation in chapter Useful Theorems in Circuit Analysis of Network Theory
Answer» The correct answer is (d) 4 To explain: PERFORMING DELTA to star transformation we obtain the equivalent RESISTANCE at NODE A is R =(11×12)/(11+12+13)=4Ω.

Discussion

190.	If the resistors of star connected system are R1, R2, R3 then the resistance between 3 and 1 in delta connected system will be?(a) (R1R2 + R2R3 + R3R1)/R1(b) (R1R2 + R2R3 + R3R1)/R3(c) (R1R2 + R2R3 + R3R1)/R2(d) (R1R2 + R2R3 + R3R1)/(R3+R1)This question was addressed to me during an interview for a job.The query is from Star-Delta Transformation in division Useful Theorems in Circuit Analysis of Network Theory
Answer» The correct option is (c) (R1R2 + R2R3 + R3R1)/R2 The explanation is: After transformation to delta, the resistance between 2 and 3 in delta connected system will be (R1R2 + R2R3 + R3R1)/R2 and this resistance lies between R1, R3 in delta connection.

Discussion

191.	If the resistors of star connected system are R1, R2, R3 then the resistance between 1 and 2 in delta connected system will be?(a) (R1R2 + R2R3 + R3R1)/R3(b) (R1R2 + R2R3 + R3R1)/R1(c) (R1R2 + R2R3 + R3R1)/R2(d) (R1R2 + R2R3 + R3R1)/(R1+R2)The question was posed to me by my college professor while I was bunking the class.I'm obligated to ask this question of Star-Delta Transformation topic in section Useful Theorems in Circuit Analysis of Network Theory
Answer» Correct OPTION is (a) (R1R2 + R2R3 + R3R1)/R3 To explain: After TRANSFORMATION to delta, the resistance between 1 and 2 in delta connected system will be (R1R2 + R2R3 + R3R1)/R3 and this resistance LIES between R1, R2 in delta connection.

Discussion

192.	If the resistors of star connected system are R1, R2, R3 then the resistance between 2 and 3 in delta connected system will be?(a) (R1R2 + R2R3 + R3R1)/R3(b) (R1R2 + R2R3 + R3R1)/R2(c) (R1R2 + R2R3 + R3R1)/R1(d) (R1R2 + R2R3 + R3R1)/(R3+R2)I had been asked this question during an online exam.The origin of the question is Star-Delta Transformation in chapter Useful Theorems in Circuit Analysis of Network Theory
Answer» RIGHT OPTION is (c) (R1R2 + R2R3 + R3R1)/R1 To explain: After TRANSFORMATION to delta, the resistance between 2 and 3 in delta connected system will be(R1R2 + R2R3 + R3R1)/R1 and this resistance lies between R3, R2 in delta CONNECTION.

Discussion

193.	If a resistor Rx is connected between nodes X and Y, Ry between X and Y, Rz between Y and Z to form a delta connection, then after transformation to star, the resistance at node Z is?(a) RyRx/(Rx+Ry+Rz)(b) RyRx/(Rx+Ry+Rz)(c) RzRy/(Rx+Ry+Rz)(d) (Rz+Rx)/(Rx+Ry+Rz)I have been asked this question by my school teacher while I was bunking the class.My enquiry is from Star-Delta Transformation in chapter Useful Theorems in Circuit Analysis of Network Theory
Answer» Correct option is (C) RzRy/(Rx+RY+RZ) Explanation: After transformation to STAR, the resistor at node Y is RzRy/(Rx+Ry+Rz) and this resistance lies between Rz, Ry in star connection.

Discussion

194.	If a resistor Rx is connected between nodes X and Y, Ry between X and Y, Rz between Y and Z to form a delta connection, then after transformation to star, the resistance at node Y is?(a) RzRy/(Rx+Ry+Rz)(b) RzRx/(Rx+Ry+Rz)(c) RxRy/(Rx+Ry+Rz)(d) (Rz+Ry)/(Rx+Ry+Rz)I had been asked this question during an online interview.Query is from Star-Delta Transformation in section Useful Theorems in Circuit Analysis of Network Theory
Answer» CORRECT choice is (b) RzRx/(Rx+Ry+Rz) Explanation: After TRANSFORMATION to STAR, the resistor at NODE Y is RzRx/(Rx+Ry+Rz) and this resistance LIES between Rx, Rz in star connection.

Discussion

195.	If a resistor Rx is connected between nodes X and Y, Ry between X and Y, Rz between Y and Z to form a delta connection, then after transformation to star, the resistor at node X is?(a) RxRy/(Rx+Ry+Rz)(b) RxRz/(Rx+Ry+Rz)(c) RzRy/(Rx+Ry+Rz)(d) (Rx+Ry)/(Rx+Ry+Rz)I got this question in quiz.This interesting question is from Star-Delta Transformation topic in portion Useful Theorems in Circuit Analysis of Network Theory
Answer» RIGHT choice is (a) RxRy/(RX+RY+Rz) Explanation: After transformation to star, the resistor at node X is RxRy/(Rx+Ry+Rz) and this resistance lies between Rx, Ry in star CONNECTION.

Discussion

Explore topic-wise InterviewSolutions in .

The following circuit satisfies Reciprocity Theorem.(a) True(b) FalseI had been asked this question by my school principal while I was bunking the class.This question is from Reciprocity Theorem topic in division Useful Theorems in Circuit Analysis of Network Theory

The circuit which satisfies Reciprocity Theorem is called?(a) Short circuit(b) Open circuit(c) Linear circuit(d) Non-linear circuitThe question was posed to me in an interview for internship.The doubt is from Reciprocity Theorem in portion Useful Theorems in Circuit Analysis of Network Theory

Find the current through the 2Ω(c-d) resistor in the circuit shown below.(a) 0.143(b) 1.43(c) 14.3(d) 143The question was asked during an online interview.The origin of the question is Reciprocity Theorem topic in section Useful Theorems in Circuit Analysis of Network Theory

To check for the Reciprocity Theorem we consider ______ of response to excitation.(a) ratio(b) addition(c) product(d) subtractionI had been asked this question in final exam.The origin of the question is Reciprocity Theorem in portion Useful Theorems in Circuit Analysis of Network Theory

Find the voltage drop across 5Ω resistor in the circuit shown below.(a) 33(b) 34(c) 35(d) 36The question was asked by my school teacher while I was bunking the class.Question is taken from Norton’s Theorem topic in chapter Useful Theorems in Circuit Analysis of Network Theory

Find the current through 5Ω resistor in the circuit shown below.(a) 7(b) 8(c) 9(d) 10The question was asked during an interview.My doubt stems from Norton’s Theorem topic in portion Useful Theorems in Circuit Analysis of Network Theory

Find the current flowing between terminals A and B obtained in the equivalent Nortan’s circuit.(a) 8(b) 9(c) 10(d) 11This question was addressed to me in class test.This is a very interesting question from Norton’s Theorem in chapter Useful Theorems in Circuit Analysis of Network Theory

Find the equivalent resistance between terminals A and B obtained in the equivalent Nortan’s circuit.(a) 8(b) 9(c) 10(d) 11I got this question by my college director while I was bunking the class.My doubt is from Norton’s Theorem in section Useful Theorems in Circuit Analysis of Network Theory

Find the current flowing between terminals A and B in the following circuit.(a) 1(b) 2(c) 3(d) 4The question was posed to me during an interview.This interesting question is from Norton’s Theorem in chapter Useful Theorems in Circuit Analysis of Network Theory

Find the voltage drop across 6Ω resistor in the circuit shown below.(a) 6.58(b) 7.58(c) 8.58(d) 9.58The question was posed to me in an international level competition.Query is from Norton’s Theorem topic in chapter Useful Theorems in Circuit Analysis of Network Theory

Find the current through 6Ω resistor in the circuit shown below.(a) 1(b) 1.43(c) 2(d) 2.43This question was posed to me at a job interview.My doubt stems from Norton’s Theorem in section Useful Theorems in Circuit Analysis of Network Theory

Find the equivalent resistance between terminals A and B of the circuit shown below.(a) 0.33(b) 3.33(c) 33.3(d) 333The question was asked in an online quiz.The doubt is from Norton’s Theorem in chapter Useful Theorems in Circuit Analysis of Network Theory

Find the current through 5Ω resistor in the following circuit.(a) 0.1(b) 0.2(c) 0.3(d) 0.4This question was posed to me in my homework.My enquiry is from Thevenin’s Theorem topic in portion Useful Theorems in Circuit Analysis of Network Theory

Find the equivalent thevenin’s resistance between terminals A and B in the circuit shown below.(a) 6(b) 7(c) 8(d) 9I have been asked this question in final exam.My query is from Thevenin’s Theorem topic in portion Useful Theorems in Circuit Analysis of Network Theory

Find the current flowing between terminals A and B of the circuit shown below.(a) 1(b) 2(c) 3(d) 4I had been asked this question at a job interview.This interesting question is from Norton’s Theorem topic in portion Useful Theorems in Circuit Analysis of Network Theory

Find the equivalent thevenin’s resistance between terminals A and B in the following circuit.(a) 6(b) 6.25(c) 6.5(d) 6.75I got this question during an internship interview.Question is taken from Thevenin’s Theorem topic in chapter Useful Theorems in Circuit Analysis of Network Theory

Find the equivalent thevenin’s resistance between terminals A and B in the circuit shown below.(a) 333(b) 33.3(c) 3.33(d) 0.333I have been asked this question in unit test.My query is from Thevenin’s Theorem in chapter Useful Theorems in Circuit Analysis of Network Theory

Consider the circuit shown below. Find the current flowing through 24Ω resistor.(a) 0.33(b) 0.66(c) 0(d) 0.99The question was asked in an internship interview.The question is from Thevenin’s Theorem topic in portion Useful Theorems in Circuit Analysis of Network Theory

Consider the circuit shown below. Find the equivalent Thevenin’s voltage between nodes A and B.(a) 8(b) 8.5(c) 9(d) 9.5I have been asked this question in an interview.This interesting question is from Thevenin’s Theorem in chapter Useful Theorems in Circuit Analysis of Network Theory

Find the voltage across 2Ω resistor in the circuit shown below using Superposition theorem.(a) 1(b) 2(c) 3(d) 4The question was asked during a job interview.Enquiry is from Superposition Theorem in portion Useful Theorems in Circuit Analysis of Network Theory

Find the voltage across 2Ω resistor due to 20V source in the following circuit.(a) 0.5(b) 0(c) 1(d) 1.5The question was posed to me in an interview.My query is from Superposition Theorem in portion Useful Theorems in Circuit Analysis of Network Theory

Find the voltage across 2Ω resistor due to 20V source in the circuit shown below.(a) 1(b) 1.5(c) 2(d) 2.5This question was posed to me in an online quiz.My question is taken from Superposition Theorem topic in portion Useful Theorems in Circuit Analysis of Network Theory

Find the voltage across 2Ω resistor due to 2A source in the following figure.(a) -1(b) 1(c) 1.46(d) -1.46This question was posed to me during an online exam.Asked question is from Superposition Theorem in section Useful Theorems in Circuit Analysis of Network Theory

Find the voltage across 2Ω resistor due to 20V source in the following figure.(a) -2.92(b) 2.92(c) 1.92(d) -1.92This question was posed to me during an internship interview.Question is taken from Superposition Theorem topic in portion Useful Theorems in Circuit Analysis of Network Theory

In the circuit shown, find the current through 4Ω resistor using Superposition theorem.(a) 4(b) 5(c) 6(d) 7I have been asked this question during an internship interview.The above asked question is from Superposition Theorem topic in portion Useful Theorems in Circuit Analysis of Network Theory

Find the equivalent resistance between node 1 and node 3 in the star connected circuit shown below.(a) 30(b) 31(c) 32(d) 33The question was asked in an interview for job.Enquiry is from Star-Delta Transformation in division Useful Theorems in Circuit Analysis of Network Theory

Find the equivalent resistance at node C in the delta connected circuit shown below.(a) 3.66(b) 4.66(c) 5.66(d) 6.66This question was posed to me in class test.I'd like to ask this question from Star-Delta Transformation in chapter Useful Theorems in Circuit Analysis of Network Theory

Find the equivalent resistance at node A in the delta connected circuit shown in the figure below.(a) 1(b) 2(c) 3(d) 4I have been asked this question during an interview.I'm obligated to ask this question of Star-Delta Transformation in chapter Useful Theorems in Circuit Analysis of Network Theory