Assertion (A): Schottky transistors are preferred over normal transistors in digital circuits

Reason (R): A Schottky transistor when used as a switch, between cutoff and active region.

Assertion (A): Tristate logic is used for bus oriented systems

Reason (R): The outputs of a tristate logic are 0, 1 and indeterminant.

1. To provide telephone communication to a large number of telephone users within the area of a metropolitan only
2. To use minimum amount of frequency spectrum
3. To permit hand held as well as vehicle operation of telephone

1. using thin gate oxide
2. reducing the substrate concentration
3. increasing the substrate concentration.

Assertion (A): L[af₁(t) + bf₂(t)] = aF₁(s) - bF₂(s)

Reason (R): Initial value theroem enables us to find the value of f(t) at t = 0 directly from F(s)

Assertion (A): The dual of a circuit can be drawn by window-dot method.

Reason (R): The principle of duality is of great help in circuit analysis.

1. It supports many arithmetic functions like SUM, ABS, EXP, INT, MOD etc.
2. It supports many trigonometric functions.
3. It supports IRR function to calculate interest rate.
4. It supports PV function to calculate the present value of future receipts.