GATE ECE 2004 | GATE ECE Year Wise Previous Years Questions

GATE ECE 2004

MCQ (Single Correct Answer)

-0.3

An AM signal and a narrow-band FM signal with identical carriers, modulating signals and modulation indices of 0.1 are added together. The resultant signal can be closely approximated by

broadband FM

SSB with carrier

DSB-SC

SSB without carrier

GATE ECE 2004

MCQ (Single Correct Answer)

-0.6

Two sinusoidal signals of same amplitude and frequencies 10 kHz and 10.1 kHz are added together. The combined signal is given to an ideal frequency detector. The output of the detector is

0.1 kHz sinusoid

20.1 kHz sinusoid

a linear function of time

a constant

GATE ECE 2004

MCQ (Single Correct Answer)

-0.3

An AM signal is detected using an envelope detector. The carrier frequency and modulating signal frequency are 1 MHz and 2 KHz respectively. An appropriate value for the time constant of the envelope detector is

500 µsec

20 µsec

0.2 µsec

1 µsec

GATE ECE 2004

MCQ (Single Correct Answer)

-0.6

Consider the signal flow graph shown in Figure. The gain $$\frac{x_5}{x_1}$$ is GATE ECE 2004 Control Systems - Signal Flow Graph and Block Diagram Question 7 English

GATE ECE 2004 Control Systems - Signal Flow Graph and Block Diagram Question 7 English

$$\frac{1-\left(be\;+\;cf\;+\;dg\right)}{abcd}$$

$$\frac{bedg}{1-\left(be\;+\;cf\;+\;dg\right)}$$

$$\frac{abcd}{1-\left(be\;+\;cf\;+\;dg\right)\;+\;bedg}$$

$$\frac{1-\left(be\;+\;cf\;+\;dg\right)\;+\;bedg}{abcd}$$

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