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Q1. | A delta circuit has each element of value R/2. The equivalent elements of star circuit with be |

A. | R/6 [Correct Answer] |

B. | R/3 [Wrong Answer] |

C. | 2R [Wrong Answer] |

D. | 3R [Wrong Answer] |

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Explanation:-
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**Also Read Similar Questions Below :**

⇒ The circuit whose properties are same in either direction is known as

unilateral circuit

bilateral circuit

irreversible circuit

reversible circuit

⇒ Application of Norton's theorm to a circuit yields

equivalent current source and impedance in series

equivalent current source and impedance in parallel

equivalent impedance

equivalent current source

⇒ In a balanced Wheatstone bridge, if the positions of detector and source are interchanged, the bridge will still remain balanced. This inference can be drawn from

reciprocity theorem.

duality theorem.

compensation theorem.

equivalence theorem.

⇒ A network which contains one or more than one source of e.m.f. is known as

linear network

non-linear network

passive network

active network

⇒ A capacitor is generally a

bilateral and active component

active, passive, linear and nonlinear component

linear and bilateral component

non-linear and active component

⇒ To neglect a voltage source, the terminals across the source are

open-circuited.

short-circuited.

replaced by some resistance.

replaced by inductor.

⇒ A passive network is one which contains

only variable resistances

only some sources of e.m.f. in it

only two sources of e.m.f. in it

no source of e.m.f. in it

⇒ The number of possible ordered trees with 3 nodes A, B, C is

6

8

10

12

⇒ A network having one or more than one source of emf is known as____ network.

passive

active

linear

nonlinear

⇒ While calculating R

_{th}in Thevenin's theorem and Norton equivalent

all independent sources are made dead

only current sources are made dead

only voltage sources are made dead

all voltage and current sources are made dead

⇒ Superposition theorem is applicable for:

Linear circuits only.

Non-linear circuits only.

Linear and non-linear circuits both.

None of these.

⇒ Kirchhoff's law is not applicable to circuits with

lumped parameters

passive elements

distributed parameters

non-linear resistances

⇒ Which of the following theorems is applicable for both linear and nonlinear circuits ?

Superposition.

Thevenin's.

Norton's.

None of these.

⇒ The poles and zeroes of an all-pass network are located in which part of the s-plane?

Poles and zeroes are in the right half s-plane.

Poles and zeroes are in the left half s-plane.

Poles in right half and zeroes in left half of s-plane.

Poles in the left half and zeroes in right half of s-plane.

⇒ A delta circuit has each element of value R/2. The equivalent elements of star circuit with be

R/6

R/3

2R

3R

⇒ For a linear network containing generators and impedances, the ratio of the voltage to the current produced in other loop is the same as the ratio of voltage and current obtained if the positions of the voltage source and the ammeter measuring the cuiTent are interchanged. The network theorem is known as

Millman's theorem.

Norton's theorem.

Tellegen's theorem.

Reciprocity theorem.

⇒ Ideal voltage source have

zero internal resistance.

infinite internal resistance.

low value of current.

large value of emf.

⇒ "Maximum power output is obtained from a network when the load resistance is equal to the output resistance of the network as seen from the terminals of the load".

The above statement is associated with

Millman's theorem

Thevenin's theorem

Superposition theorem

Maximum power transfer theorem

⇒ The first and the last critical frequencies (singularities) of a driving point impedance function of a passive network having two kinds of elements, are a pole and a zero respectively. The above property will be satisfied by

RL network only.

RC network only

LC network only

RC as well as RL networks

⇒ If a circuit does not contain any source of energy or e.m.f. it is known as

unilateral circuit

bilateral circuit

passive network

active network

⇒ A dependent source

may be a current source or a voltage source

is always a voltage source

is always a current source

neither a current source nor a voltage source

⇒ A constant current source supplies a current of 300 mA to a load of 1 kω. When the load is changed to 100 ω, the load current will be

3 A

300 mA

30 mA

100 mA

⇒ Which of the following is not a nonlinear element?

Gas diode

Heater coil

Tunnel diode

Electric arc

⇒ "Any number of current sources in parallel may be replaced by a single current source whose current is the algebraic sum of individual source currents and source resistance is the parallel combination of individual source resistances".

The above statement is associated with

Thevenin's theorem

Millman's theorem

Maximum power transfer theorem

None of the above

⇒ A closed path made by several branches of the network is known as

branch

loop

circuit

junction

⇒ The number of independent equations to solve a network is equal to

the number of chords

the number of branches

sum of the number of branches and chords

sum of number of branches, chords and nodes

⇒ According to Kirchhoff's voltage law, the algebraic sum of all IR drops and e.m.fs. in any closed loop of a network is always

negative

positive

determined by battery e.m.fs.

zero

⇒ Efficiency of power transfer when maximum transfer of power occurs is

100%

80%

75%

50%

⇒ Kirchhoff's current law states that

net current flow at the junction is positive

algebraic sum of the currents meeting at the junction is zero

no current can leave the junction without some current entering it.

total sum of currents meeting at the junction is zero

⇒ Superposition theorem is not applicable for

voltage calculations

bilateral elements

power calculations.

passive elements