The distance relay with inherent directional property is known as ________relay.

Type of Relay
$$A.$$ Buchholz Relay
$$B.$$ Translay relay
$$C.$$ Carrier current, phase comparison relay
$$D.$$ Directional over Current relay
$$E.$$ Negative sequence relay

Most suited for
$$P.$$ Feeder
$$Q.$$ Transformer
$$R.$$ Radial distributed
$$S.$$ Generator
$$T.$$ Ring main distributor
$$U.$$ Long over head transmission line

In load-flow analysis, a voltage-controlled bus is treated as a load bus in subsequent iteration for a _________limit is violated.

The $$rms$$ value of the periodic waveform $$e(t),$$ shown in figure is