GATE ECE format:nat PYQs & Answers — Page 16

Home
GATE
Electronics and Communication Engineering
Topics
format:nat

Questions 151–160 of 239. Imported answers require independent review unless marked reviewed.

Topic practice 239 questionsPage 16 of 24

A rectangular waveguide of width

and height

has cut-off frequencies for

and

modes in the ratio 1:2. The aspect ratio

, rounded off to two decimal places, is ______.

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

In the circuit shown,

is a 10 V square wave of period,

with

and

. The capacitor is initially uncharged at

, and the diode is assumed to be ideal. The voltage across the capacitor (

) at 3 ms is equal to ____ volts (rounded off to one decimal place).

Diagram for Electronics and Communication Engineering question 52

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

A CMOS inverter, designed to have a mid-point voltage

equal to half of

, as shown in the figure, has the following parameters:

for nMOS

for pMOS

The ratio of

is equal to ____ (rounded off to 3 decimal places).

Diagram for Electronics and Communication Engineering question 53

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

In the circuit shown, the threshold voltages of the pMOS (

) and nMOS (

) transistors are both equal to 1 V. All the transistors have the same output resistance

of 6 M

. The other parameters are listed below:

and

are the carrier mobilities, and

is the oxide capacitance per unit area. Ignoring the effect of channel length modulation and body bias, the gain of the circuit is ____ (rounded off to 1 decimal place).

Diagram for Electronics and Communication Engineering question 54

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

In the circuit shown,

and

. The other relevant parameters are mentioned in the figure.

Diagram for Electronics and Communication Engineering question 55

Ignoring the effect of channel length modulation and the body effect, the value of

is ____ mA (rounded off to 1 decimal place).

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

Consider the following amplitude modulated signal:

The ratio (accurate to three decimal places) of the power of the message signal to the power of the carrier signal is __________.

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

Consider a binary channel code in which each codeword has a fixed length of 5 bits. The Hamming distance between any pair of distinct codewords in this code is at least 2. The maximum number of codewords such a code can contain is __________.

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

A binary source generates symbols

which are transmitted over a noisy channel. The probability of transmitting

is 0.5. Input to the threshold detector is

. The probability density function

of the noise

is shown below.

Diagram for Electronics and Communication Engineering question 17

If the detection threshold is zero, then the probability of error (correct to two decimal places) is __________.

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

A p-n step junction diode with a contact potential of 0.65 V has a depletion width of 1 μm at equilibrium. The forward voltage (in volts, correct to two decimal places) at which this width reduces to 0.6 μm is ______.

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

A traffic signal cycles from GREEN to YELLOW, YELLOW to RED and RED to GREEN. In each cycle, GREEN is turned on for 70 seconds, YELLOW is turned on for 5 seconds and the RED is turned on for 75 seconds. This traffic light has to be implemented using a finite state machine (FSM). The only input to this FSM is a clock of 5 second period. The minimum number of flip-flops required to implement this FSM is ______.

You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer

GATE ECE format:nat PYQs

Question 51

Question 52

Question 53

Question 54

Question 55

Question 15

Question 16

Question 17

Question 18

Question 19