Electronics and Communication Engineering - Exam Questions Papers

Why should I learn to solve Electronics and Communication Engineering questions and answers section on "Exam Questions Papers"?

Learn and practise solving Electronics and Communication Engineering questions and answers section on "Exam Questions Papers" to enhance your skills so that you can clear interviews, competitive examinations, and various entrance tests (CAT, GATE, GRE, MAT, bank exams, railway exams, etc.) with full confidence.

Where can I get the Electronics and Communication Engineering questions and answers section on "Exam Questions Papers"?

IndiaBIX provides you with numerous Electronics and Communication Engineering questions and answers based on "Exam Questions Papers" along with fully solved examples and detailed explanations that will be easy to understand.

Where can I get the Electronics and Communication Engineering section on "Exam Questions Papers" MCQ-type interview questions and answers (objective type, multiple choice)?

Here you can find multiple-choice Electronics and Communication Engineering questions and answers based on "Exam Questions Papers" for your placement interviews and competitive exams. Objective-type and true-or-false-type questions are given too.

How do I download the Electronics and Communication Engineering questions and answers section on "Exam Questions Papers" in PDF format?

You can download the Electronics and Communication Engineering quiz questions and answers section on "Exam Questions Papers" as PDF files or eBooks.

How do I solve Electronics and Communication Engineering quiz problems based on "Exam Questions Papers"?

You can easily solve Electronics and Communication Engineering quiz problems based on "Exam Questions Papers" by practising the given exercises, including shortcuts and tricks.

1.
In the following non planar graph number of independent loop equations are
8
12
7
5
Answer: Option
Explanation:

Number of independent loop equations are given by,

L = B - N + 1

where L : No. of loop equations

B : No. of branches = 12

N : No. of nodes = 8

L = 12 - 8 + 1 = 5.


2.
A transmission line has a characteristic impedance of 50 Ω and a resistance of 0.1 Ω/m, if the line is distortion less, the attenuation constant (in Np/m) is
500
5
0.014
0.002
Answer: Option
Explanation:

Distortion less

a = RG and Z0 = RG

.


3.
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:
30 dB
46.91 dB
40 dB
49.92 dB
Answer: Option
Explanation:

(SNR)dB = 1.76 + 6.02n

n = 8

Thus (SNR)dB = 1.76 + 6.02 x 8 = 49.92 dB.


4.
A rectangular waveguide, in dominant TE mode, has dimensions 10 cm x 15 cm. The cut off frequency is
10 GHz
1 GHz
15 GHz
25 GHz
Answer: Option
Explanation:

For TE10 mode


5.
A radar receiver has a noise figure of 10 dB at 300 K having a bandwidth of 2.5 MHz. The minimum power it can receive is
3.45 x 10-15 W
1.38 x 10-15 W
7.5 x 10-15 W
93.15 x 10-15 W
Answer: Option
Explanation:

Pm = kT0Δf(F - 1) = 93.15 x 10-15 W.