Assuming ideal elements in the circuit shown below, the voltage $${V_{ab}}$$ will be

The number of chords in the graph of the given circuit will be

A bridge circuit is shown in the figure below. Which one of the sequence given below is most suitable for balancing the bridge?

Two Sinusoidal signal $$p\left( {{\omega _1}t} \right) = A\,\sin \omega t,$$ and $$q\left( {{\omega _2}t} \right)$$ are applied to $$X$$ and $$Y$$ inputs of a dual channel $$C.R.O,$$ the lissajous figure displayed on the screen is shown below. The signal $$q\left( {{\omega _2}t} \right)$$ will be represented as