1. In 8085 address and data buses are multiplexed.
2. In Z 80 address and data buses are multiplexed
3. In Z 80 address and data buses are not multiplexed.
4. Z 80 has 16 bit address bus and 8 bit data bus.

Assertion (A): A series RLC circuit resonates when excited by variable frequency source.

Reason (R): Resonant frequency is geometric mean of half power frequencies.

1. It is a transducer
2. Its performance is essentially frequency sensitive
3. It is a reciprocal device
4. With increase in its effective aperture area, width of the radiated beam increases.

Assertion (A): In FM all power amplifiers can be operated in class C

Reason (R): FM is a constant amplitude modulation system.

1. The sign of a floating point number depends on the sign of mantissa only.
2. If the absolute value of a number is less than 1, the sign of exponent is zero or positive.
3. With sign bit of mantissa as 0, increasing the exponent from a positive to a more positive value gives a larger floating point number.

Assertion (A): For large signal variations an amplifier circuit has to be analysed graphically

Reason (R): The output characteristics of a transistor is nonlinear.