Explain the suitable example to convert a practical current source into equivalent voltage source.

1 Answer

Answer :

image

The open- circuit voltage across terminals A and B is

Voc = drop across R

 =5x2=10V

Hence, voltage source has a voltage of 10V and the same resistance of 2Ω

Related questions

Description : Draw – (i) Practical voltage source (ii) Ideal current source

Last Answer : i) Practical voltage source  ii) Ideal current source Where, Is = Current Source Rs = internal resistance of source

Description : An a.c series circuit has resistance of 10ohm, inductance of 0.1H and capacitance of 10µf, voltage applied to circuit is 200V. find (i) Resonant frequency (ii) Current at resonance (iii) Power at resonance 

Last Answer : Solution: For RLC series circuit

Description : Two unpedauces given by Z1 = 10 + j5 and Z2 = 8 + j9 are joined in parallel and connected across a voltage of V = 200 + j0. Calculate the circuit current and branch currents. Draw the vector diagram.

Last Answer : Solution: Given, Z1=10+j5, Z2=8+j9, V=200+j0

Description : For R-C series circuit draw (i) Circuit diagram (ii) Vector diagram (iii) Waveform of voltage and current

Last Answer : i) Circuit diagram ii)Vector diagram iii)Waveform of voltage and current

Description : Find the Norton equivalent resistance for the network shown in Fig No. 2

Last Answer : Solution: To find Norton’s equivalent resistance removing voltage source and current source. Voltage source is replaced by short circuit and current source is replaced by open circuit so, we get circuit as

Description : Use mesh analysis to calculate ammeter current in Fig No. 1

Last Answer : Solution:

Description : A series combination of resistance 100 ohm and capacitance 50µf is connected in series to a 230 V, 50HZ supply. Calculate (i) Capacitive reactance (ii) Current (iii) Power factor (iv) Power consumed 

Last Answer : For RC series circuit

Description : State super position theorem. Write steps to find current in an element using super position theorem.

Last Answer : Statement of superposition theorem: In any linear network containing two or more sources, the current in any element is equal to algebraic sum of the current caused by individual source acting ... . Add algebraically the voltage drops and branch currents to obtain combined effect of all sources.

Description : Compare series and parallel resonance on the basis of (i) Resonating frequency (ii) Impedance (iii) Current (iv) Magnification

Last Answer : S. No . Parameter Series Circuit Parallel Circuit 1 Resonating frequency 2 Impedance Minimum, Z = R Maximum, Z = L/CR 3 Current Maximum, I ... , I = V/(L/CR)  4 Magnification Voltage magnification takes place Current magnification takes place

Description : Explain the concept of initial and final conditions in switching circuits for elements R and L. 

Last Answer : Concept of Initial and final condition in switching circuits for R:  Consider a resistor is connected to a voltage source, using a switch as shown in fig below The switch is closed ... of value Io in parallel with short circuit.(I0 is the current in inductor just before switching)

Description : Derive an expression for delta to star transformation. 

Last Answer : For delta network the resistance between the terminals 1 and 2 consists of R12 in parallel with  (R23+R31) Hence ,the resistance between the terminals 1 and 2 is In case of star network the ... equation( ii) from( i),we get Adding equations (iii) and( iv),we have 

Description : Derive an expression for resonant frequency of series RLC circuit.

Last Answer : At resonance frequency in RLC series circuit, we have inductive reactance is equal to capacitive reactance i.e.  Where fr is the resonant frequency in RLC series circuit. 

Description : Write equation of short circuit Y parameters.

Last Answer : The equation of short circuit Y parameters.

Description : State maximum power transfer theorem. 

Last Answer : The maximum power transfer theorem states that the maximum amount of power will be delivered to the load resistance when the load resistance is equal to the Thevenin/ Norton resistance of the network supplying the power ... draws maximum power. Also find the value of the maximum power.

Description : State condition for resonance in R-L-C series circuit.

Last Answer : The condition for resonance in R-L-C series circuit. i) Inductive Reactance should be equal to capacitive reactance. That is XL = XC ii) The power factor of the circuit is Cos ɸ = 1 iii)The voltage and ... and given by I =V/R. v)Impedance of the circuit is minimum and given by Z =R.

Description : Write equation of resultant impedance in R-L circuit. 

Last Answer : The equation of resultant impedance in R-L circuit

Description : Define: (i) Apparent power (ii) Real power

Last Answer : (i) Apparent power It is the product of rms values of applied voltage and circuit current. Unit: volt-ampere (VA) OR kilo-volt-ampere (kVA) OR Mega-volt-ampere (MVA) S = VI = I2 Z volt ... circuit. (OR) It is the power which is actually dissipated in the circuit resistance.

Description : Nodal Analysis of Electric Circuits Example

Last Answer : Nodal Analysis of Electric Circuits Example 1 : https://youtu.be/XLS6kDQuHj0 Nodal Analysis of Electric Circuits Example 2 : https://youtu.be/OFhurvl74bA Nodal Analysis of Electric Circuits ... youtu.be/GmOozdjTVtM Nodal Analysis of Electric Circuits Example 9 : https://youtu.be/KjgfjJ7Ubb8

Description : Nodal analysis problem

Last Answer : Nodal analysis problem

Last Answer : Any electric network may be defined as a combination of a number of electric elements.

Description : Which capacitors are suitable for DC filter circuits?

Last Answer : Electrolytic capacitors are suitable for DC filter circuits.

Description : A network that consists of at least a voltage source or current source is called A) Active network B) Ideal network C) Sourced network D) Outsourced network

Last Answer : A network that consists of at least a voltage source or current source is called Active network

Description : Explain with neat diagram series and parallel magnetic circuits. 

Last Answer : Series magnetic circuit: When different magnetic materials having different lengths, cross sectional areas and permeability are connected one after another, in which same flux is established in different sections, then it is called series ... flux, Φ = Φ1 + Φ2  Path 1: BAFE  Path 2: BACD

Description : Which of the following circuits converts any arbitrary waveform into square waveform? A) Hartley oscillator B) Schmitt trigger C) Differentiator D) RC phase shift oscillator 

Last Answer : Which of the following circuits converts any arbitrary waveform into square waveform? A) Hartley oscillator B) Schmitt trigger C) Differentiator D) RC phase shift oscillator 

Description : Basic Op Amp Circuits

Last Answer : In this chapter we will be examining some common uses of op amps. Where Chapter Three focused on the theory of negative feedback in a more abstract way, this chapter zeroes in on the practical ... on using op amps with a single polarity power supply and how to increase the available output current.

Description : Compare Asynchronous sequential and synchronous sequential circuits.

Last Answer : SR. NO. ASYNCHRONOUS SEQUENTIAL CIRCUIT SYNCHRONOUS SEQUENTIAL CIRCUITS. 1 Output can be changed at any instant of time by changing the input Output changes at discrete ... the counter change state simultaneously. This is because all the flip-flops are clocked simultaneously.

Description : Series rc circuits

Last Answer : Series rc circuits

Description : Circuits with XL Alone

Last Answer : Circuits with XL Alone X L values in series let two inductive reactances X L 1 and X L 2 are connected in series and has value 50 ohm and 50 ohm respectively. 100 volts A C ... phasor. And it is taken horizontal. Phase angle between inductive current and voltage is same 90 degree.

Description : AC Circuits with Resistance but No Reactance

Last Answer : AC Circuits with Resistance but No Reactance AC Circuits with Resistance but No Reactance Series resistances let two resistances R 1 and R 2 are connected in series as shows in figure and there ... voltage. Voltage V A is common to both the branch hence voltage V A is common reference.

Description : What is the need of polarity marking in polyphase AC circuits?

Last Answer : Need of Polarity Marking in Polyphase AC Circuits: i) Polarity marking of terminals provides reference polarity for better understanding of system, even if the polarity of ac voltage changes ... of current transformers in relay protection circuit and getting desired performance is very difficult.

Description : State superposition theorem applied to D.C. circuits.

Last Answer : Superposition Theorem applied to D.C. circuits: Superposition theorem states that in any linear, bilateral, multisource network, the response (voltage across any element or current through any ... each source acting alone, while the other sources are replaced by their internal resistances.

Description : State two advantages of digital circuits.

Last Answer : Advantages of Digital Circuits: i) Digital circuits are easier to design. ii) Information storage is easy. iii) Accuracy and precision are greater. iv) Less affected by noise. v) Reliability is more

Description : Which of the following is true at resonance in LC circuits? A) The series impedance of the two elements is at a maximum and the parallel impedance is at minimum B) The series impedance of the ... D) The series impedance of the two elements is at a minimum and the parallel impedance is at maximum

Last Answer : Which of the following is true at resonance in LC circuits? A) The series impedance of the two elements is at a maximum and the parallel impedance is at minimum B) The series impedance of ... D) The series impedance of the two elements is at a minimum and the parallel impedance is at maximum

Description : Asynchronous circuits are usually faster than synchronous circuits because

Last Answer : Asynchronous circuits are usually faster than synchronous circuits because they are free running and do not depend on the frequency of the clock

Description : An air gap is usually inserted in magnetic circuits to?

Last Answer : An air gap is usually inserted in magnetic circuits to prevent saturation.

Description : In AC. circuits, laminated iron is invariably used in order to?

Last Answer : In AC. circuits, laminated iron is invariably used in order to reduce eddy current loss.

Description : Explain the architecture of Bluetooth technology with suitable diagram.

Last Answer : Bluetooth is short range wireless technology. Range of Bluetooth is 10 meters. Bluetooth Architecture defines 2 types of networks. 1)Piconet 2)Scatternet Piconet: - It is a Bluetooth network that ... . This node is called bridge slave. This node cannot be the master of two piconets.

Description : Explain PAN with suitable diagram. Differentiate between PAN and CAN.

Last Answer : A personal area network(PAN) is a network organized around an individual person. A PAN can also be used for communication among personal devices themselves(interpersonal communication).PAN network can be ... used for personal communication. 4. CAN is mainly used for corporate campuses.

Description : A linear network has a current input 4cos(ω t + 20º)A and a voltage output 10 cos(ωt +110º) V. Determine the associated impedance.

Last Answer : Solution

Description : A network is said to be under resonance when the voltage and the current at the network input terminals are (A) in phase (B) out of phase (C) in phase quadrature (D) in phase, and have equal magnitudes

Last Answer : A network is said to be under resonance when the voltage and the current at the network input terminals are in phase

Description : The terminal characteristics of a dc generator suitable for electric welders is (A) separately excited generator (B) shunt generator (C) series generator (D) differentially compounded generator

Last Answer : The terminal characteristics of a dc generator suitable for electric welders is differentially compounded generator

Description : N resistors of each of resistance R when connected in series offer an equivalent resistance of 50 ohm and when reconnected in parallel the effective resistance is 2 ohm the value of R is

Last Answer : 25 ohms

Description : Norton’s theorem states that a complex network connected to a load can be replaced with an equivalent impedance (A) in series with a current source (B) in parallel with a voltage source (C) in series with a voltage source (D) in parallel with a current source

Last Answer : in parallel qith current source

Description : A network consists of several inductances connected in parallel. The equivalent inductance of the network is given by (A) the sum of the individual inductances. (B) the reciprocal of the ... of individual inductances. (D) the reciprocal of the sum of reciprocals of individual inductances.

Last Answer : A network consists of several inductances connected in parallel. The equivalent inductance of the network is given by the reciprocal of the sum of reciprocals of individual inductances.

Description : Discuss hybrid topology with suitable diagram. 

Last Answer : Discuss hybrid topology with suitable dig. Hybrid topology is one that uses two or more basic topologies together Fig.1 depicts this. In this case, the bus, star & ring topologies are used to ... many networks are quite complex but they can be reduced to some form of hybrid topology.

Description : State various effects of electric current and explain any one.

Last Answer : Effects of Electric Current:  1. Magnetic Effect: When a current is passed through a conductor, magnetic field is produced round the conductor. Due to this field when current carrying ... The rise in temperature is converted into elongation of hot wire element causes displacement of pointer. 

Description : Explain connectionless and connection oriented protocol. Give the example for each type.

Last Answer : Connection less protocol: These protocols do not establish a connection between devices. It is manually achieved by transmitting information in one direction, from source to destination without checking to ... SMTP establish a TCP connection between Sender And port number 25 of receiver

Description : Explain sub-netting and super-netting with example.

Last Answer : Sub-netting:subnet mask is a net mask with the only real difference being that breaking a larger network into smaller parts and each smaller section will use different sets of address ... address) AND 11111111.11111111.11111100.00000000 (supernet mask) Returns 11000000.10101000.01000000.00000000

Description : Explain encapsulation with example.

Last Answer : Each layer in the layered architecture provides service to the layers which are directly above and below it. The outgoing information will travel down through the layers to the lowest layer. While ... to each packet obtained from layer 3 and pass it to layer 1 for physical transmission. 

Description : A network contains linear resistors and ideal voltage sources. If values of all the resistors are doubled then the voltage across each resistor will

Last Answer : A network contains linear resistors and ideal voltage sources. If values of all the resistors are doubled then the voltage across each resistor will not change