1. An arithmetic operation between integer and an integer gives integer as the result.
2. An arithmetic operation between a real and a real constant gives real constant as the result.
3. An arithmetic operation between an integer constant and a real constant is not valid.

1. It is an unpolarised instrument.
2. It has permanent magnet.
3. It has a fixed coil.
4. It has two iron vanes.

Assertion (A): The impedance of a series resonant circuit is minimum at resonance.

Reason (R): Resonance condition implies unity power factor condition.

Assertion (A): A good op-amp should have very large band width

Reason (R): An ideal op-amp should have infinite input resistance and zero output resistance

Assertion (A): Acceptor extrinsic semiconductor has higher conductivity than intrinsic semiconductor.

Reason (R): Addition of p-type impurity produces an allowable discrete energy level just above valence band.

Assertion (A): Data communication using digital data must be very accurate.

Reason (R): In analog signals redundancy is available but in digital signals redundancy is not available.