Besides a method of trial and error, which of the following methods is employed for solution of network problems in interconnected system ? (a) Circulating current method (b) Thevenin's theorem (c) Superposition of currents (d) Direct application of Kirehhoffs laws (e) All of the above

Besides a method of trial and error, which of the following methods is employed for solution of network problems in interconnected system ? (a) Circulating current method (b) Thevenin's theorem (c) Superposition of currents (d) Direct application of Kirehhoffs laws (e) All of the above
by

1 Answer

Answer :

(e) All of the above
by

Related questions

Which of the following methods is used for laying of underground cables ? (a) Direct laying (b) Draw-in-system (c) Solid system (d) All of the above

Description : Which of the following methods is used for laying of underground cables ? (a) Direct laying (b) Draw-in-system (c) Solid system (d) All of the above

Last Answer : (d) All of the above

To find current in a resistance connected in a network, Thevenin's theorem is used VTH = 20 V and RTH = 5 Ω.

Description : To find current in a resistance connected in a network, Thevenin's theorem is used VTH = 20 V and RTH = 5 Ω. The current through the resistance: (1) is 4 A (2) is 4 A or less (3) is less than 4 A (4) May be 4 A or less or more than 4 A

Last Answer : To find current in a resistance connected in a network, Thevenin's theorem is used VTH = 20 V and RTH = 5 Ω. The current through the resistance: is less than 4 A 

Which of the following is the demerit of a 'constant voltage transmission system' ? (a) Increase of short-circuit current of the system (b) Availability of steady voltage at all loads at the line terminals (c) Possibility of better protection for the line due to possible use of higher terminal reactants (d) Improvement of power factor at times of moderate and heavy loads (e) Possibility of carrying increased power for a given conductor size in case of long-distance heavy power transmission

Description : Which of the following is the demerit of a 'constant voltage transmission system' ? (a) Increase of short-circuit current of the system (b) Availability of steady voltage at all loads at ... of carrying increased power for a given conductor size in case of long-distance heavy power transmission

Last Answer : (a) Increase of short-circuit current of the system

Thevenin’s theorem can be applied to network containing...

Description : Thevenin’s theorem can be applied to network containing : (A) Passive elements only (B) Active elements only (C) Linear elements only (D) All of these

Last Answer : C

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

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 

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

Superposition theorem is not applicable to network containing:

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

Last Answer : A

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

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

Last 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 

Which of the following D.C. distribution system is the simplest and lowest in first cost ? (a) Radial system (b) Ring system (c) Inter-connected system (d) None of the above

Description : Which of the following D.C. distribution system is the simplest and lowest in first cost ? (a) Radial system (b) Ring system (c) Inter-connected system (d) None of the above

Last Answer : (a) Radial system

Overhead system can be designed for operation up to (a) 11 kV (b) 33 kV (c) 66 kV (d) 400 kV

Description : Overhead system can be designed for operation up to (a) 11 kV (b) 33 kV (c) 66 kV (d) 400 kV

Last Answer : (c) 66 kV

The underground system cannot be operated above (a) 440 V (b) 11 kV (c) 33 kV (d) 66 kV

Description : The underground system cannot be operated above (a) 440 V (b) 11 kV (c) 33 kV (d) 66 kV

Last Answer : (d) 66 kV

By which of the following systems electric power may be transmitted ? (a) Overhead system (b) Underground system (c) Both (a) and (b) (d) None of the above

Description : By which of the following systems electric power may be transmitted ? (a) Overhead system (b) Underground system (c) Both (a) and (b) (d) None of the above

Last Answer : (c) Both (a) and (b)

Multicore cables generally use (a) square conductors (b) circular conductors (c) rectangular conductors (d) sector-shaped conductors (e) none of the above

Description : Multicore cables generally use (a) square conductors (b) circular conductors (c) rectangular conductors (d) sector-shaped conductors (e) none of the above

Last Answer : (d) sector-shaped conductors

Due to which of the following reasons the cables should not be operated too hot ? (a) The oil may loose its viscosity and it may start drawing off from higher levels (b) Expansion of the oil may cause the sheath to burst (c) Unequal expansion may create voids in the insulation which will lead to ionization (d) The thermal instability may rise due to the rapid increase of dielectric losses with temperature (e) All of the above

Description : Due to which of the following reasons the cables should not be operated too hot ? (a) The oil may loose its viscosity and it may start drawing off from higher levels (b) Expansion of the ... instability may rise due to the rapid increase of dielectric losses with temperature (e) All of the above

Last Answer : (e) All of the above

The operating voltage of extra high tension cables is upto (a) 6.6 kV (b) 11 kV (c) 33 kV (d) 66 kV (e) 132 kV

Description : The operating voltage of extra high tension cables is upto (a) 6.6 kV (b) 11 kV (c) 33 kV (d) 66 kV (e) 132 kV

Last Answer : (d) 66 kV

If variable part of annual cost on account of interest and depreciation on the capital outlay is equal to the annual cost of electrical energy wasted in the conductors, the total annual cost will be minimum and the corresponding size of conductor will be most economical. This statement is known as (a) Kelvin's law (b) Ohm's law (c) Kirchhoffs law (d) Faraday's law (e) none of the above

Description : If variable part of annual cost on account of interest and depreciation on the capital outlay is equal to the annual cost of electrical energy wasted in the conductors, the total annual cost will be minimum and the ... (b) Ohm's law (c) Kirchhoffs law (d) Faraday's law (e) none of the above

Last Answer : (a) Kelvin's law

The minimum clearance between the ground and a 220 kV line is about (a) 4.3 m (b) 5.5 m (c) 7.0 m (d) 10.5 m

Description : The minimum clearance between the ground and a 220 kV line is about (a) 4.3 m (b) 5.5 m (c) 7.0 m (d) 10.5 m

Last Answer : (c) 7.0 m

The material commonly used for sheaths of underground cables is (a) lead (b) rubber (c) copper (d) iron

Description : The material commonly used for sheaths of underground cables is (a) lead (b) rubber (c) copper (d) iron

Last Answer : (a) lead

The material generally used for armour of high voltage cables is (a) aluminium (b) steel (c) brass (d) copper

Description : The material generally used for armour of high voltage cables is (a) aluminium (b) steel (c) brass (d) copper

Last Answer : (b) steel

In transmission lines the crossarms are made of (a) copper (b) wood (c) R.C.C. (d) steel

Description : In transmission lines the crossarms are made of (a) copper (b) wood (c) R.C.C. (d) steel

Last Answer : (d) steel

Overhead lines generally use (a) copper conductors (b) all aluminium conductors (c) A.C.S.R. conductors (d) none of these

Description : Overhead lines generally use (a) copper conductors (b) all aluminium conductors (c) A.C.S.R. conductors (d) none of these

Last Answer : (c) A.C.S.R. conductors

The material commonly used for insulation in high voltage cables is (a) lead (b) paper (c) rubber (d) none of the above

Description : The material commonly used for insulation in high voltage cables is (a) lead (b) paper (c) rubber (d) none of the above

Last Answer : (b) paper

Distribution lines in India generally use (a) wooden poles (b) R.C.C. poles (c) steel towers (d) none of the above

Description : Distribution lines in India generally use (a) wooden poles (b) R.C.C. poles (c) steel towers (d) none of the above

Last Answer : (b) R.C.C. poles

High voltage transmission lines use (a) suspension insulators (b) pin insulators (c) both (a) and (b) (d) none of the above

Description : High voltage transmission lines use (a) suspension insulators (b) pin insulators (c) both (a) and (b) (d) none of the above

Last Answer : (a) suspension insulators

The distributors for residential areas are (a) single phase (b) three-phase three wire (c) three-phase four wire (d) none of the above

Description : The distributors for residential areas are (a) single phase (b) three-phase three wire (c) three-phase four wire (d) none of the above

Last Answer : (c) three-phase four wire

Most of the high voltage transmission lines in India are (a) underground (b) overhead (c) either of the above (d) none of the above

Description : Most of the high voltage transmission lines in India are (a) underground (b) overhead (c) either of the above (d) none of the above

Last Answer : (b) overhead

The voltage of the single phase supply to residential consumers is (a) 110 V (b) 210 V (c) 230 V (d) 400 V

Description : The voltage of the single phase supply to residential consumers is (a) 110 V (b) 210 V (c) 230 V (d) 400 V

Last Answer : (c) 230 V

A booster is a (a) series wound generator (b) shunt wound generator (c) synchronous generator (d) none of the above

Description : A booster is a (a) series wound generator (b) shunt wound generator (c) synchronous generator (d) none of the above

Last Answer : (a) series wound generator

The operating voltage of supertension cables is up to (a) 3.3 kV (b) 6.6 kV (c) 11 kV (d) 33 kV

Description : The operating voltage of supertension cables is up to (a) 3.3 kV (b) 6.6 kV (c) 11 kV (d) 33 kV

Last Answer : (d) 33 kV

The operating voltage of high voltage cables is up to (a)l.lkV (b)3.3kV (c)6.6kV (d)llkV

Description : The operating voltage of high voltage cables is up to (a)l.lkV (b)3.3kV (c)6.6kV (d)llkV

Last Answer : (d)llkV

The square root of the ratio of line impedance and shunt admittance is called the (a) surge impedance of the line (b) conductance of the line (c) regulation of the line (d) none of the above

Description : The square root of the ratio of line impedance and shunt admittance is called the (a) surge impedance of the line (b) conductance of the line (c) regulation of the line (d) none of the above

Last Answer : (a) surge impedance of the line

The phenomenon qf rise in voltage at the receiving end of the open-circuited or lightly loaded line is called the (a) Seeback effect (b) Ferranti effect (c) Raman effect (d) none of the above

Description : The phenomenon qf rise in voltage at the receiving end of the open-circuited or lightly loaded line is called the (a) Seeback effect (b) Ferranti effect (c) Raman effect (d) none of the above

Last Answer : (b) Ferranti effect

310 km line is considered as (a) a long line (b) a medium line (c) a short line (d) any of the above

Description : 310 km line is considered as (a) a long line (b) a medium line (c) a short line (d) any of the above

Last Answer : (a) a long line

Which of the following are the constants of the transmission lines ? (a) Resistance (b) Inductance (c) Capacitance (d) All of the above

Description : Which of the following are the constants of the transmission lines ? (a) Resistance (b) Inductance (c) Capacitance (d) All of the above

Last Answer : (d) All of the above

The corona is considerably affected by which of the following ? (a) Size of the conductor (b) Shape of the conductor (c) Surface condition of the conductor (d) All of the above

Description : The corona is considerably affected by which of the following ? (a) Size of the conductor (b) Shape of the conductor (c) Surface condition of the conductor (d) All of the above

Last Answer : (d) All of the above

The usual spans with R.C.C. poles are (a) 40—50 meters (b) 60—100 meters (c) 80—100 meters (d) 300—500 meters

Description : The usual spans with R.C.C. poles are (a) 40—50 meters (b) 60—100 meters (c) 80—100 meters (d) 300—500 meters

Last Answer : (c) 80—100 meters

Galvanised steel wire is generally used as (a) stay wire (b) earth wire (c) structural components (d) all of the above

Description : Galvanised steel wire is generally used as (a) stay wire (b) earth wire (c) structural components (d) all of the above

Last Answer : (d) all of the above

Which of the following materials is not used for transmission and distribution of electrical power ? (a) Copper (b) Aluminium (c) Steel (d) Tungsten

Description : Which of the following materials is not used for transmission and distribution of electrical power ? (a) Copper (b) Aluminium (c) Steel (d) Tungsten

Last Answer : (d) Tungsten

The wooden poles well impregnated with creosite oil or any preservative compound have life (a) from 2 to 5 years (b) 10 to 15 years (c) 25 to 30 years (d) 60 to 70 years

Description : The wooden poles well impregnated with creosite oil or any preservative compound have life (a) from 2 to 5 years (b) 10 to 15 years (c) 25 to 30 years (d) 60 to 70 years

Last Answer : (c) 25 to 30 years

are the conductors, which connect the consumer's terminals to the distribution (a) Distributors (b) Service mains (c) Feeders (d) None of the above

Description : are the conductors, which connect the consumer's terminals to the distribution (a) Distributors (b) Service mains (c) Feeders (d) None of the above

Last Answer : (b) Service mains

State Thevenin’s Theorem:

Description : State Thevenin’s Theorem:

Last Answer : According to thevenin's theorem, the current flowing through a load resistance Connected across any two terminals of a linear active bilateral network is the ratio open circuit voltage (i.e. the voltage across ... resistance and internal resistance of the network. It is given by Voc / (Ri + RL).

State and explain Thevenin’s theorem

Description : State and explain Thevenin’s theorem

Last Answer : Thevenin's Theorem states that Any linear circuit containing several voltages and resistances can be replaced by just one single voltage in series with a single resistance connected across the load . ... Thevenin's equivalent resistance Rth forms Thevenin's equivalent circuit as shown below.

State and explain Thevenin’s theorem with suitable example.

Description : State and explain Thevenin’s theorem with suitable example.

Last Answer : Statement: Any network containing active and/or passive elements and one or more dependent and/or independent voltage/or current sources can be replaced by an equivalent network containing a voltage source ( ... given by IL =VTH/ (RTH+RL) figures above illustrate the concept of Thevenin s theorem

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

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

Last 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:

State Thevenin’s Theorem.

Description : State Thevenin’s Theorem.

Last 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. 

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

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

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

In Thevenin's theorem, to find Z?

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

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

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

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

Last Answer : It  can  be  applied  to  AC  circuits

Castigliano's first theorem is applicable (A) For statically determinate structures only (B) When the system behaves elastically (C) Only when principle of superposition is valid(D) None of the above

Description : Castigliano's first theorem is applicable (A) For statically determinate structures only (B) When the system behaves elastically (C) Only when principle of superposition is valid (D) None of the above

Last Answer : (C) Only when principle of superposition is valid

State and explain superposition theorem.

Description : State and explain superposition theorem.

Last 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.

State superposition theorem with suitable example

Description : State superposition theorem with suitable example

Last 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.