GATE ECE Question Papers 2024: Answer Keys, Previous Years PDF

The GATE ECE question papers 2024 help students evaluate the exam pattern, identify important topics, revise the core concepts, and assist in self-assessment and adapting to the difficulty level of the GATE exam 2024.

GATE ECE Question Papers with Answer Keys PDF 2024

GATE Electronics and Communication Engineering (ECE) question papers with answer keys has been updated as the exam was concluded on Feb 11, 2024, below in the table for students to check the paper pattern, and understand the difficulty level of the exam.

Also Read: GATE 2024 Question Paper with Solutions

GATE ECE Previous Year Question Papers with Answer Keys PDF

GATE Electronics and Communication Engineering question papers with answer keys containing the most essential topics: Electronic Devices and Circuits, Networks Analysis and Synthesis, Electromagnetic Field Theory, Power Electronics, Analog Electronics, Digital Electronics, Automatic Control Systems and Communication Systems like forming one of the essential parts of the GATE syllabus.

Also Check: GATE Answer Key 2024

Top 10+ GATE ECE Questions with Solutions

Top 10+ Electronics and Communication Engineering (ECE) questions with solutions PDF containing essential topics like Networks Analysis and Synthesis, Electromagnetic Field Theory, Measurements and Instrumentation, Microprocessors, Signals and Systems and Matching Questions.

The link of the PDF of top 20+ GATE Electronics and Communication questions with solutions is linked below by clicking on it:

Q1. A certain 8-bit uniform quantization PCM system can accommodate a signal ranging from - 1 V to + V. The RMS value of the signal is V . The signal-to-quantization noise ratio is:

1. 30 dB
2. 46.91 dB
3. 40 dB
4. 49.92 dB

Ans. Option A

Q2. A rectangular waveguide, in dominant TE mode, has dimensions 10 cm x 15 cm. The cut-off frequency is

1. 10 GHz
2. 1 GHz
3. 15 GHz
4. 25 GHz

Ans. Option B

Also Read: GATE ECE Syllabus 2024: Important Topics, Question Papers

Q3.As the temperature increases, the mobility of electrons _____?

1. decreases because the number of carries increases with increased collisions
2. increases because the number of carries decreases with decreased collisions
3. remains same
4. none of the above

Ans. Option A

Q4. Consider the following

• The maximum energy of electrons liberated photo electrically is independent of light intensity
• The maximum energy of electrons liberated photo electrically varies nonlinearly with the frequency of incident light.

1. (1) is true, and (2) is false
2. (1) and (2) both are true
3. (1) is false, and (2) is true
4. (1) and (2) both are false

Ans. Option A

Also Check: GATE Response Sheet 2024

Q5. When phase-lag compensation is used in a system, then gain crossover frequency, bandwidth and undamped frequency are respectively

1. Increased, Increased, Increased
2. Increased, Increased, Decreased
3. Increased, Decreased, Decreased
4. Decreased, Decreased, Decreased

Ans. Option D

Q6. The gradient of any scalar field always yields __________.

1. a solenoidal field
2. a conservative field
3. an irrotational field
4. none of these

Ans. Option B

Also Read: GATE Negative Marking: Negative Marking System & Rules

Q7. In a flash type ADC, employing 15 comparators resolution with 10 volts reference is expected to be :

1. 0.625 V
2. 0.656 V
3. 0.525 V
4. insufficient data

Ans. Option A

Q8. The antenna current of an AM transmitter is 8 A when only the carrier is sent, but it increases to 8.93 A when a single sine wave modulates the carrier. Determine the antenna current when the per cent of modulation changes to 0.8

1. 9.19 A
2. 9.91 A
3. 10.56 A
4. 8.61 A

Ans. Option A

Also Read: GATE Exam Day Instructions 2024

Q9. A noiseless 3 KHz channel can transmit binary at the rate __________.

1. 12000 bps
2. 10000 bps
3. 6000 bps
4. 3000 bps

Ans. Option C

Q10. The specific gravity of tungsten is 13.8, and its atomic weight is 184.0. Assume that there are two free elements per atom. Then, the Fermi level or characteristic energy for the crystal in eV will be

1. 8.95 eV
2. -8.95 eV
3. 7.326 eV
4. -7.326 eV

Ans. Option C

Also Check: GATE Exam Dress Code 2024

Q11. For a given voltage, four heating coils will produce maximum heat when connected

1. all in parallel
2. all in series
3. with two parallel pairs in a series
4. one pair in parallel with the other two in series

Ans. Option A

Q12. A TV picture will be transmitted over a channel of 6 MHz bandwidth at a 35 dB S/N ratio. The capacity of the channel is

1. 50 Mbps
2. 100 Mbps
3. 36 Mbps
4. 72 Mbps

Ans. Option D

Also Check: GATE Qualifying Marks 2024

GATE Exam Pattern 2024

The organising authority has released the GATE exam pattern 2024, which is available for each of the 30 papers. The MCQ, MSQ, and NAT question types that make up the GATE 2024 paper format are combined with a 3-hour (180-minute) exam period.

• Marks for General Aptitude (15 marks) and subject questions (85 marks) will be distributed in papers AR, CY, DA, EY, GG, MA, PH, ST, XH, and XL.
• There will be sixty-five questions on the exam. The GATE maximum score is 100. 
• In both engineering and general aptitude, approximately 28% of the total marks for the papers will come from the mathematics section.

Also Read: What is a Good GATE Score 2024?