Electric Circuits Objective Questions – Set 17

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

Which quantity consists of a unit 1KWh ?

Active element of electrical circuit is

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

Which of following statements is incorrect?

The basic circuit elements are

The resistivity of the conductor depends on

For a voltage source

Constant voltage source is

A practical current source is represented by

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

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

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

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

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

Internal resistance of ideal voltage source is

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 ?

1 F is theoretically equal to

Which quantity should be measured by the voltmeter ?

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

Ideal current source have

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

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

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

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

Super position theorem is not applicable for

The minimum requirement for causing flow of electric current flow

An ideal voltage source should have

Nodal analysis can be applied for

A dependent source