GATE EE 1998 | GATE EE Year Wise Previous Years Questions

GATE EE 1998

MCQ (Single Correct Answer)

-0.6

For block diagram shown in Figure $$C(s)/R(s)$$ is given by GATE EE 1998 Control Systems - Block Diagram and Signal Flow Graph Question 11 English

$${{{G_1}{G_2}{G_3}} \over {1 + {H_2}{G_2}{G_3} + {H_1}{G_1}{G_2}}}$$

$${{{G_1}{G_2}{G_3}} \over {1 + {G_1}{G_2}{G_3} + {H_1}{H_2}}}$$

$${{{G_1}{G_2}{G_3}} \over {1 + {G_1}{G_2}{G_3}{H_1} + {G_1}{G_2}{G_3}{H_2}}}$$

$${{{G_1}{G_2}{G_3}} \over {1 + {G_1}{G_2}{G_3}{H_1}}}$$

GATE EE 1998

Subjective

-0

Match the following GATE EE 1998 Digital Electronics - Combinational Circuits Question 11 English

GATE EE 1998

Subjective

-0

In a digital combinational circuit with $$4$$ inputs $$(A, B, C, D),$$ it is required to obtain an output of logical $$1$$ only for the input combination

$$(A = 1; B = C = D = 0).$$ It is known that the following combinations of input are forbidden:

$$ABCD = 1010, 1011, 1100, 1101, 1110, 1111$$
Evaluate the logical expression for the output and realize the same with two input $$NAND$$ gates. Assume that complements of inputs are not available.

GATE EE 1998

MCQ (Single Correct Answer)

-0.3

The open collector outputs of two$$2$$-inputs $$NAND$$ gates are connected to a common pull up resistor. If the input to the gates are $$P,Q$$ and $$R,S$$ respectively, the output is equal to

$$\overline {PQ} \,.\,\overline {RS} $$

$$\overline {PQ} \,+\,\overline {RS} $$

$$PQ+RS$$

$$PQRS$$

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