Assertion (A): An encoder converts key dips to binary code.

Reason (R): An encoder has more inputs than output.

1. The collinear arms are isolated from each other.
2. On of the collinear arms is isolated from E arm.
3. On of the collinear arms is isolated from H arm.
4. E and H arms are isolated from each other.

Assertion (A): In a circuit having high inductance, reactive power may be more than apparent power.

Reason (R): Reactive power = VI sin θ.

1. simple circuitry
2. ability to track and scan simultaneously
3. ability to track many targets together
4. very fast scanning