My Cart
Your Cart 0

    Your cart is empty.

  • Total (Amount) ₹0.00
Exam Details

Electronics & Communication Engineering (EC) 2011

Review the key details, then start the test when you are ready. You can also open the full package to see related papers.

Questions 65
Duration 180 mins
Package Electronics & Communication Engineering (EC) - Previous Year Papers

Paper pattern & analysis

Filter this paper by subject, topic or subtopic. Every graph updates from the selected questions.

Explore previous papers
Showing all 65 questions in this paper.

Subject distribution

No subject classification is available.

Topic distribution

No topic classification is available.

Subtopic distribution

No subtopic classification is available.

Difficulty distribution

Easy 64 98.5%
Hard 1 1.5%

Question type distribution

Multiple Choices 64 98.5%
Fill in the blanks 1 1.5%

Instructions

Electronics & Communication Engineering (EC) 2011 – Instructions
  • Total number of questions: 65
  • 30 questions carry one mark each
  • 35 questions carry two marks each
  • Negative marking: 1/3 of the marks allotted to the question
  • Use of calculator is allowed
  • This is a proctored examination
  • All other browser applications will be automatically closed
  • After three warnings, the examination window will close automatically

Syllabus

Full Syllabus

Sample questions from this paper

Questions are selected across the paper subjects wherever the paper contains that variety.

1
2011 · Unclassified
Electronics & Communication Engineering (EC) 2011
Q.1 – Q.25 carry one mark each.

The modes in a rectangular waveguide are denoted by TEmn/TMmn, where m and n are the eigen numbers along the larger and smaller dimensions of the waveguide respectively. Which one of the following statements is TRUE?

A
The TM₁₀ mode of the waveguide does not exist
B
The TE₁₀ mode of the waveguide does not exist
C
The TM₁₀ and the TE₁₀ modes both exist and have the same cut-off frequencies
D
The TM₁₀ and the TM₀₁ modes both exist and have the same cut-off frequencies
2
2011 · Unclassified
Electronics & Communication Engineering (EC) 2011

The Column-1 lists the attributes and the Column-2 lists the modulation systems. Match the attribute to the modulation system that best meets it.

Column-1Column-2
P. Power efficient transmission of signalsI. Conventional AM
Q. Most bandwidth efficient transmission of voice signalsII. FM
R. Simplest receiver structureIII. VSB
S. Bandwidth efficient transmission of signals with significant dc componentIV. SSB-SC
A
P-IV, Q-I, R-I, S-III
B
P-II, Q-IV, R-I, S-III
C
P-III, Q-II, R-I, S-IV
D
P-II, Q-IV, R-III, S-I
3
2011 · Unclassified
Electronics & Communication Engineering (EC) 2011

The differential equation 100 d2y/dt2 - 20 dy/dt + y = x(t) describes a system with an input x(t) and an output y(t). The system, which is initially relaxed, is excited by a unit step input. The output y(t) can be represented by the waveform

A
B
C
D
4
2011 · Unclassified
Electronics & Communication Engineering (EC) 2011

For the transfer function G(jω) = 5 + jω, the corresponding Nyquist plot for positive frequency has the form

A
B
C
D
5
2011 · Unclassified
Electronics & Communication Engineering (EC) 2011

The trigonometric Fourier series of an even function does not have the

A
dc term
B
cosine terms
C
sine terms
D
odd harmonic terms
6
2011 · Unclassified
Electronics & Communication Engineering (EC) 2011

When the output Y in the circuit below is '1', it implies that data has

A
changed from '0' to '1'
B
changed from '1' to '0'
C
changed in either direction
D
not changed