GATE ECE 1987 | GATE ECE Year Wise Previous Years Questions

GATE ECE 1987

MCQ (Single Correct Answer)

-0.3

A ripple counter using negative edge-triggered D-flip flops is shown in Fig.1. The flip-flops are cleared to '0' by a '0' at the R input. The feedback logic is to be designed to obtain the count sequence shown in the same figure. The correct feedback logic is: GATE ECE 1987 Digital Circuits - Sequential Circuits Question 9 English 1

GATE ECE 1987 Digital Circuits - Sequential Circuits Question 9 English 1

GATE ECE 1987 Digital Circuits - Sequential Circuits Question 9 English 2

$$F\, = \overline {{Q_2}{Q_1}\overline {{Q_0}} } $$

$$F\, = \,{Q_2}\,\overline {{Q_1}} \overline {{Q_0}} $$

$$F\, = \,\overline {{Q_2}} \overline {{Q_1}} {Q_0}$$

$$F\, = \,\overline {{Q_2}} \overline {{Q_1}} \overline {{Q_0}} $$

GATE ECE 1987

MCQ (Single Correct Answer)

-0.3

Choose the correct statements relating to the circuit of figure GATE ECE 1987 Digital Circuits - Sequential Circuits Question 5 English

For V_i = -2V, P=0

For V_i = +3V, P=0

For V_i = 0V, P=0 always

For V_i = 0V, P can be either 0 or 1.

GATE ECE 1987

MCQ (Single Correct Answer)

-0.6

For an electromagnetic wave incident from one medium to a second medium, total reflection takes place when

The angle of incidence is equal to the Brewster angle with E field perpendicular to the plane of incidence.

The angle of incidence is equal to the Brewster angle with E field parallel to the plane of incidence.

The angle of incidence is equal to the critical angle with the wave moving from the denser medium to a rarer medium.

The angle of incidence is equal to the critical angle with the wave moving from a rarer medium to a denser medium.

GATE ECE 1987

MCQ (Single Correct Answer)

-0.6

A transmission line of pure resistive characteristic impedance is terminated with an unknown load. The measured value of VSWR on the line is equal to 2 and a voltage minimum point is found to be at the load. The load impedance is then

complex

Purely capacitive

Purely resistive

Purely inductive

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