Electric Circuits Objective Questions – Set 17

A practical current source is represented by

Current source has internal impedance connected in parallel with it whereas voltage source has internal impedance connected in __________________ with it.

If a circuit does not contain any source of energy or emf, it is known as

For determining the polarity of the voltage drop across a resistor, it is necessary to know the

The basic circuit elements are

Active element of electrical circuit is

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

Nodal analysis can be applied for

A balanced star connected load with impedance of 30j - 300 Ω is supplied from a 3 - phase, 4-wire, 173 V system, the voltages to neutral being 100j -900, 100j - 300 and 100j -1500 V. The current in neutral wire is

A star connected load has three equal impedance each of (40 + j30) Ω If the line current is 5 A then value of line voltage is

An ideal voltage source should have

A dependent source

For a voltage source

i) In star connection line current is equal to phase current. ii) In delta connection line voltage is equal to phase voltage. For a given phase connected to the particular line which of the statement is true ?

Constant voltage source is

A network consists of linear resistors and ideal voltage source. If the value of resistors are doubled, then voltage across each resistor is

With some initial change at t = 0+, a capacitot will act as

Super position theorem is not applicable for

Ideal current source have

1 F is theoretically equal to

The minimum requirement for causing flow of electric current flow

A network contains linear resistors and ideal voltage source s. If values of all the resistors are doubled, then voltage across each resistor is

Which of following statements is incorrect?

An ideal constant voltage source has _______________ internal impedance whereas a constant source has ____________ internal impedance.

Which quantity consists of a unit 1KWh ?

Which quantity should be measured by the voltmeter ?

The resistance of a strip of copper of rectangular cross section is 2 Ω. A metal of resistivity twice that of a copper is coated on its upper surface to a thickness equal to that of copper strip. The resistance of composite strip will be

Internal resistance of ideal voltage source is

The resistivity of the conductor depends on

How many coulombs of charge flow through a circuit carrying a current of 10 A in 1 minute?