Transformer is used to
Transformer is used to Options (a) convert AC to DC voltage (b) convert DC to AC voltage (c) obtain desired…
7 years ago
Alternating Current
The average power dissipated in a pure inductor is
The average power dissipated in a pure inductor is Options (a) VI²/4 (b) 1/2 VI (c) zero (d) VI² Correct…
7 years ago
In a circuit, L,C and R are connected in series with an alternating voltage source
In a circuit, L,C and R are connected in series with an alternating voltage source of frequency f. The current…
7 years ago
In an L-C-R series resonant circuit, the capacitance is changed from C to 4C.
In an L-C-R series resonant circuit, the capacitance is changed from C to 4C. For the same resonant frequency, the…
7 years ago
The electric current in AC circuit is given by the relation i-3 sinωt+4 cos ωt.
The electric current in AC circuit is given by the relation i-3 sinωt+4 cosωt. The rms value of the current…
7 years ago
In a circuit, the current lags behind the voltage by a phase difference of π/2.
In a circuit, the current lags behind the voltage by a phase difference of π/2. The circuit contains which of…
7 years ago
An inductor coil is connected to a 12 V battery and drawing a current 24 A. This coil
An inductor coil is connected to a 12 V battery and drawing a current 24 A. This coil is connected…
7 years ago
An alternating voltage given as, V=100√2 sin100t V is applied to a capacitor
An alternating voltage given as, V=100√2 sin100t V is applied to a capacitor of 1 μF. The current reading of…
7 years ago
An inductor 20 mH, a capacitor 50 μF and a resistor 40Ω are connected in series
An inductor 20 mH, a capacitor 50 μF and a resistor 40Ω are connected in series across a source of…
7 years ago
A small signal voltage V(t)=V₀ sin ωt is applied across an ideal capacitor C
A small signal voltage V(t)=V₀ sin ωt is applied across an ideal capacitor C Options (a) over a full cycle…
7 years ago