A.C. Fundamentals | Circuits and Circuit Theory

The frequency of an alternating current is____________?

Byadmin December 11, 2018July 18, 2021

The frequency of an alternating current is____________?

A. the speed with which the alternator runs
B. the number of cycles generated in one minute
C. the number of waves passing through a point in one second
D. the number of electrons passing through a point in one second

A.C. Fundamentals | Circuits and Circuit Theory

In series resonant circuit, increasing inductance to its twice value and reducing capacitance to its half value__________?

In series resonant circuit, increasing inductance to its twice value and reducing capacitance to its half value__________?

A. will change the maximum value of current at resonance
B. will change the resonance frequency
C. will change the impedance at resonance frequency
D. will increase the selectivity of the circuit

Read More In series resonant circuit, increasing inductance to its twice value and reducing capacitance to its half value__________?
A.C. Fundamentals | Circuits and Circuit Theory

The product of apparent power and cosine of the phase angle between circuit voltage and current is

The product of apparent power and cosine of the phase angle between circuit voltage and current is

A. true power
B. reactive power
C. volt-amperes
D. instantaneous power

Read More The product of apparent power and cosine of the phase angle between circuit voltage and current is
A.C. Fundamentals | Circuits and Circuit Theory

Aphasoris________?

Aphasoris________?

A. a line which represents the magnitude and phase of an alternating quantity
B. a line representing the magnitude and direction of an alternating quantity
C. a coloured tag or band for distinction between different phases of a 3-phase supply
D. an instrument used for measuring phases of an unbalanced 3-phase load

Read More Aphasoris________?
A.C. Fundamentals | Circuits and Circuit Theory

In a series L-C circuit at the resonant frequency the__________?

In a series L-C circuit at the resonant frequency the__________?

A. current is maximum
B. current is minimum
C. impedance is maximum
D. voltage across C is minimum

Read More In a series L-C circuit at the resonant frequency the__________?
A.C. Fundamentals | Circuits and Circuit Theory

All definitions of power factor of a series R-L-C circuit are correct except__________?

All definitions of power factor of a series R-L-C circuit are correct except__________?

A. ratio of net reactance and impedance
B. ratio of kW and kVA
C. ratio of J and Z
D. ratio of W and VA

Read More All definitions of power factor of a series R-L-C circuit are correct except__________?
A.C. Fundamentals | Circuits and Circuit Theory

A pure capacitor connected across an A.C. voltage consumed 50 W. This is due to________?

A pure capacitor connected across an A.C. voltage consumed 50 W. This is due to________?

A. the capacitive reactance in ohms
B. the current flowing in capacitor
C. the size of the capacitor being quite big
D. the statement is incorrect

Read More A pure capacitor connected across an A.C. voltage consumed 50 W. This is due to________?

Similar Posts