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Why superposition theorem is not valid for power?

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Description : State Superposition Theorem.

Answer : Superposition Theorem: In any linear, bilateral, multisource network the voltage across or the current through any branch is given by algebraic sum of all individual voltages or currents caused ... sources acting alone with all other sources replaced by their internal resistances if any.

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

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 : The superposition theorem is based on the concept of ?

Answer : The superposition theorem is based on the concept of Linearity.

Description : Can we apply the superposition theorem to AC circuit?

Description : Which of the following statements is incorrect ? (A) Superposition theorem is useful for Linear and Non-linear circuit analysis when several sources are present in the circuit. (B) ... purely resistive, maximum power transfer is achieved under the condition : Load Resistance = Source Resistance

Answer : Which of the following statements is incorrect ? (A) Superposition theorem is useful for Linear and Non-linear circuit analysis when several sources are present in the circuit. ... purely resistive, maximum power transfer is achieved under the condition : Load Resistance = Source Resistance

Description : The superposition theorem requires as many circuits to be solved as there are?

Answer : The superposition theorem requires as many circuits to be solved as there are sources.

Description : The superposition theorem is applicable to?

Answer : The superposition theorem is applicable to linear responses only.

Description : The concept on which Superposition theorem is based is?

Answer : The concept on which Superposition theorem is based is linearity.

Description : Superposition theorem can be applied only to circuits having?

Answer : Superposition theorem can be applied only to circuits having linear bilateral elements.

Description : State maximum power transfer theorem for DC circuit.

Answer : Maximum power transfer theorem for DC circuit: The maximum power transfer theorem states that the source or a network transfers maximum power to load only when the load resistance is equal ... removed (disconnected) ii) All internal independent sources are replaced by their internal resistances.

Description : Maximum Power Transfer Theorem 1

Answer : Maximum Power Transfer Theorem 1

Description : Superposition 

Answer : Superposition 1 : https://youtu.be/3C3daEzmtuM Superposition 2 : https://youtu.be/mURACJC2jAU Superposition 3 : https://youtu.be/nG715RGdsvk Superposition 4 : https://youtu.be/qCHpYc8tOUs ... Superposition 9 : https://youtu.be/8cA91sqz2AI Superposition 10 : https://youtu.be/2nYcmOtRmaY

Description : State the Thevenin’s theorem. Also write stepwise procedure for applying Thevenin’s theorem to simple circuits.

Answer : Thevenin's Theorem: Any two terminal circuit having number of linear impedance and sources (voltage, current, dependent, independent) can be represented by a simple equivalent circuit consisting of a single voltage ... 's equivalent circuit: Step V: Determination of Load current:

Description : Write the steps for finding the current through an element by Thevenin’s theorem.

Answer : Steps to find Thevenin's equivalent circuit, taking an example is as follows:  1. From the given circuit (fig.a),Remove RL from the terminals A and B and redraw the circuit as shown in ... (fig.d)from where it was temporarily removed earlier.  Current flowing through RL is given by 

Description : State Thevenin’s Theorem.

Answer : Any two terminal circuit having number of linear impedances and sources (voltage, current, dependent, independent) can be represented by a simple equivalent circuit consisting of a single voltage ... circuit across the two terminals, when the sources are replaced by their internal impedances. 

Description : Can you apply Thevenin's theorem in an AC circuit?

Answer : It  can  be  applied  to  AC  circuits

Description : Can we apply Norton's theorem in an AC circuit?

Description : Superposition theorem stays valid for a : -  a) LTI system b) Discrete system c) LT systems d) None of these

Answer : Superposition theorem stays valid for a : - LTI system

Description : As per Shannon’s channel capacity theorem, if samples are transmitted in ‘T’ seconds over a noisy channel which is bandlimited to ‘B’ Hz. The number of samples ‘n’ is given by (symbols/notations carry their usual meaning) A) B/T B) T/B C) 2BT D) BT/2 

Answer : As per Shannon’s channel capacity theorem, if samples are transmitted in ‘T’ seconds over a noisy channel which is bandlimited to ‘B’ Hz. The number of samples ‘n’ is given by ( ... /notations carry their usual meaning) A) B/T B) T/B C) 2BT D) BT/2 

Description : Millman's theorem yields equivalent  (1) Impedance or Resistance (3) Voltage source (2) Current source (4) Voltage or Current source

Answer : Millman's theorem yields equivalent Voltage or Current source

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

Answer : in parallel qith current source

Description : While calculating Rth in Thevenin's theorem and Norton equivalent?

Answer : While calculating Rth in Thevenin's theorem and Norton equivalent all independent sources are made dead.

Description : In Thevenin's theorem, to find Z?

Answer : In Thevenin's theorem, to find Z all independent voltage sources are short circuited and all independent current sources are open circuited.

Description : Millman's theorem yields?

Answer : Millman's theorem yields equivalent voltage or current source.

Description : Application of Norton's theorem to a circuit yields?

Answer : Application of Norton's theorem to a circuit yields equivalent current source and impedance in series.

Answer : According to Lami's theorem if three forces acting at a point are in equilibrium, each force is proportional to the sine of the angle between the other two.

Description : Why is AC better for long distance power transmission than DC ?

Answer : ac is more economical to transmit for long distances . wires can be made smaller by step up transformer .. since major cost are wires to transmit .. then at the end of distance step down transformer is used for commercial use.

Description : Superposition theorem is not applicable to network containing: (1) Non linear element (2) Dependent voltage source (3) Dependent current source (4) Transformer. 

Answer : A

Description : Why engine power is measured in horsepower (HP) ?

Answer : James Watt compared engine output with that of work done by a horse. WD by horse = 746W.

Description : Why don't we burry power lines underground ?

Answer : Because conductor used for power transmission are not insulated and if we do so it create phase to ground fault causing interruptions to supply.

Description : Why capacitors are used to improve power factor?

Answer :  Capacitors generate reactive power instead of that drawn from source which is required by inductive loads.so it reduce the reactive current which is drawn from source to be drawn from capacitor.This control in Electric bills cost.

Description : State why nuclear power plants are used as base load plants and diesel power plants as a peak load plant. 

Answer : 1. Because of following points Nuclear power plant used as base load power plant:-  1. Nuclear power plants is very economical for producing bulk amount of electric power 2. Nuclear power plant is reliable ... . The plants can be put on load easily. 4. Diesel engines take less time to make OFF.

Description : Explain the term reactive power. Why it is sometimes essential to measure reactive power?

Answer : Reactive power: The reactive power (Q) is defined as the product of voltage(V), current (I) and sine of angle between voltage(V) and current( I) Therefore Reactive power Q = V I ... power so that corrective measures can be taken accordingly to maintain systems power factor near to the unity.

Answer : MOSFET have high current losses due to High on state resistance. Hence MOSFET is used for low power applications.

Description : In applying superposition theorem, to determine branch currents and voltages   (a) all current and voltage sources are shorted. (b) only current sources are open circuited. (c) only voltage sources are shorted. (d) voltage sources are shorted and current sources are open circuited. 

Answer : Thesuperposition theoremforelectrical circuitsstates that for a linear system the response (voltageorcurrent) in any branch of a bilaterallinear circuithaving more than one independent source equals the ... alone, where all the other independent sources are replaced by their internalimpedances.

Answer : Because of following advantages concentrating type collector are used in solar power plant: -  1. Temperature: Temperature obtained is high because absorber area is less and collector/reflector area ... results: As tracking system is used better results are obtain than flat type collector.

Description : Why high voltage can reduce power loss?

Answer : when voltage has increased due to reduced current flow, thus power loss given by ( I^2R) will be low due to reduced current(I^2) provided that resistance (R) is constant.

Description : Why high voltage is used in power transmission?

Answer : The primary reason that power is transmitted at high voltages is to increase efficiency. ... The lower current that accompanies high voltage transmissionreduces resistance in the conductors aselectricity flows ... This means that thin, light-weight wires can beused in long-distance transmission.

Description : Why do we need to correct power factor?

Description : Why the power factor of semiconverter is better than full converter?

Answer : Power factor of semiconverter is better than full converter

Answer : Because it has a higher switching frequency and heat tolerance.

Answer : Rectifier is use in power supply to convert Alternating current (AC) to Direct Current (DC) .

Answer : Power quality is important because the electrical appliances will works better and will be safer and less loss in energy. Low energy waste and improves stability of power system .

Description : "Hydro electric power station are not perennial power station". Justify.

Answer : Justification: The water utilized by the hydro power plants comes mostly from storage dams/reservoirs which get filled up during the monsoon rainy season. Such reservoirs are utilized for supplying ... are important. Hence "Hydro electric power stations are not perennial power station" 

Description : State and explain superposition theorem.

Answer : Superposition theorem states that: In a linear circuit with several sources the voltage and current responses in any branch is the algebraic sum of the voltage and current responses due to each source acting ... branch to find the response on the branch due to the combined effect of all the sources.

Description : State superposition theorem with suitable example

Answer : Superposition theorem: Superposition theorem states that in any linear network containing two or more sources, the response (current) in any element is equal to the algebraic sum of the ... by individual sources acting alone, while the other sources are replaced by their internal resistances.

Description : In application of superposition theorem, one is required to solve as many circuits as there are  1. Nodes 2. Branches 3. Meshes 4. Sources 

Answer : In application of superposition theorem, one is required to solve as many circuits as there are Sources 

Description : State the types of radioactive waste generated in a nuclear power station. Explain the methods employed for their disposal.

Answer : Types of radioactive waste: The waste produced in nuclear power plant is in the form of solid, liquid & gases, 1. Solid Waste Disposal:-  Solid wastes removed from the reactor are very ... are measured. If it is safe then released to atmosphere at high level through large height chimney.

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