1. Rotor of control transformer is either disc shaped or umbrella shaped
2. Rotor of transmitter has low magnetic reluctance
3. Transmitter and control transformer pair act as error detector

Assertion (A): In a parallel in-serial out shift register data is loaded one bit-at a time

Reason (R): A serial in-serial out shift register can be used to introduce a time delay.

1. Roots of the characteristic equation of the system are real and negative
2. Area within the impulse response is finite

1. It is dimensionless.
2. It is equal to 1 for vacuum.
3. It is equal to 1 for all substances.

Assertion (A): A class C chopper can operate in first and second quadrants

Reason (R): A class B chopper operates only in second quadrant.

Assertion (A): A p-n junction is used as rectifier.

Reason (R): A p-n junction has low resistance in forward direction and high resistance in reverse direction.