A laminated steel ring is wound with 200 turns. When the magnetizing current varies between 5 and 7 A, the magnetic flux varies between 760 and 800 Wb. Calculate the inductance of the coil.(a) 40H(b) 4 H(c) 4000H(d) 0.004 HThe question was asked in a job interview.I'd like to ask this question from Ferromagnetic Cored Inductor in a DC Circuit in portion Inductance in a DC Circuit of Basic Electrical Engineering

A laminated steel ring is wound with 200 turns. When the magnetizing c

1.	A laminated steel ring is wound with 200 turns. When the magnetizing current varies between 5 and 7 A, the magnetic flux varies between 760 and 800 Wb. Calculate the inductance of the coil.(a) 40H(b) 4 H(c) 4000H(d) 0.004 HThe question was asked in a job interview.I'd like to ask this question from Ferromagnetic Cored Inductor in a DC Circuit in portion Inductance in a DC Circuit of Basic Electrical Engineering
Answer» CORRECT answer is (c) 4000H Easy explanation: From the formula of INCREMENTAL INDUCTANCE, we know that: L=(Change in flux/Change in CURRENT)*Number of turns Substituting the values from the given question, we get L = 4000 H.

Discussion

No Comment Found

Related InterviewSolutions

Find the value of x if the Mutual inductance is 20H, the inductance of coil 1 is xH and the inductance of coil 2 is 8H. The coupling coefficient is 5.(a) 2H(b) 4H(c) 6H(d) 8HThe question was posed to me during an internship interview.My question comes from Coupling Coefficient in chapter Inductance in a DC Circuit of Basic Electrical Engineering
Which, among the following, is the correct formula to find the coupling coefficient?(a) k=M/sqrt(L1L2)(b) k=M/sqrt(L1^2)(c) k=M/sqrt(L2^2)(d) k=M/(L1L2)The question was posed to me by my school teacher while I was bunking the class.The above asked question is from Coupling Coefficient in portion Inductance in a DC Circuit of Basic Electrical Engineering
If the flux linkage in coil 1 is 3Wb and it has 500 turns and the current in coil 2 is 2A, calculate the mutual inductance.(a) 750H(b) 500H(c) 450H(d) 900HThis question was posed to me in an online quiz.My doubt is from Mutual Inductance topic in chapter Inductance in a DC Circuit of Basic Electrical Engineering
Initially, when the switch in a series RL circuit is closed, the current in the inductor is?(a) Maximum(b) Minimum(c) Zero(d) InfinityI got this question during a job interview.My query is from Transients in LR Networks in portion Inductance in a DC Circuit of Basic Electrical Engineering
If the switch is opened at t=0, what is the current in the circuit?(a) 0A(b) 1A(c) 2A(d) 3AThe question was posed to me during an interview.The origin of the question is Transients in LR Networks topic in portion Inductance in a DC Circuit of Basic Electrical Engineering
A coil has a resistance of 4 ohms and an inductance of 2H. It is connected to a 20V dc supply. Calculate the final value of the current in the circuit.(a) 5A(b) 10A(c) 15A(d) 20AThe question was posed to me at a job interview.The question is from Analysis of Growth & Decay in section Inductance in a DC Circuit of Basic Electrical Engineering
What is the expression for voltage in the given circuit?(a) V=60e^-0.5t(b) V=30e^-0.5t(c) V=60e^-2t(d) V=30e^-2tThe question was posed to me by my college director while I was bunking the class.My doubt is from Transients in LR Networks in chapter Inductance in a DC Circuit of Basic Electrical Engineering
What is the energy stored in the magnetic field if the current in a coil has a constant inductance of L henrys grows at a uniform rate?(a) LI/2(b) LI^2/2(c) L/2I(d) L/2I^2The question was posed to me in an interview.My question comes from Energy Stored in an Inductor in chapter Inductance in a DC Circuit of Basic Electrical Engineering
Initially, when the switch in a series RL circuit is closed, the inductor acts as?(a) Open circuit(b) Short circuit(c) Resistor(d) CapacitorThis question was addressed to me by my school principal while I was bunking the class.Query is from Transients in LR Networks topic in section Inductance in a DC Circuit of Basic Electrical Engineering
At steady state, the current in the inductor is?(a) Maximum(b) Minimum(c) Zero(d) InfinityI had been asked this question during a job interview.Enquiry is from Transients in LR Networks in portion Inductance in a DC Circuit of Basic Electrical Engineering

Discussion

No Comment Found

Related InterviewSolutions

Reply to Comment