A 7-bit hamming (even parity checker) 0001001 for a BCD digit is known to have errors. The BCD encoded digit is

1.  9

2.  5

3.  3

4.  0

View Answer  
4
Correct Answer :

9


Explanation :
No Explanation available for this question

RMS quantization error in a 64 step binary PCM system with a reference scale from 0 to 6.4 volts will be

1.  0.01 volt

2.  0.03 volt

3.   0.02 volt

4.   0.04volt

View Answer  
4
Correct Answer :

0.03 volt


Explanation :
No Explanation available for this question

What is the S/N ratio in a binary PCM system with average input noise as 50 mV, reference scale from 0 to 1.6 volts step size as 0.1 volt and base-band signal applied to system is band limited to 8 kHz and transmission band width as 32 kHz,

1.  1

2.  3

3.  2

4.   4

View Answer  
4
Correct Answer :

2


Explanation :
No Explanation available for this question

If number of bits in a PCM system in increased from n to n+1, then signal-to-quantization noise ratio will increase by a factor

1.  (n+1)/n

2.  (n+1)2/n2

3.  2

4.  4

View Answer  
4
Correct Answer :

4


Explanation :
No Explanation available for this question

Output S/N PCM sampling at 8000 sample/second and using 6 bits/word for transmission, is

1.  12dB

2.  24dB

3.  18 dB

4.   dB

View Answer  
4
Correct Answer :

dB


Explanation :
No Explanation available for this question

When compression parameter, u is 285 minimum signal noise ratio required as 50 dB, 1024 quantizing levels, then L is

1.  1002

2.  1008

3.  1006

4.  1012

View Answer  
4
Correct Answer :

1012


Explanation :
No Explanation available for this question

Probability of error for a base band PCM system with a matched filter at receiver with ±5 volt bipolar pulses of duration 72 µ. sec and noise spectral density=1x10-4 volts2/Hz, will be

1.  0.95x10-5

2.  1.15x10-5

3.  1.05x10-5

4.   1.25x10-5

View Answer  
4
Correct Answer :

1.15x10-5


Explanation :
No Explanation available for this question

Quantization bit rate for a an analog input signal with a bandwidth of 3.4 kHz in a delta modulator with a signal to quantization noise ratio of 25 dB, will be

1.  48 kb/s

2.  68 kb/s

3.  58 kb/s

4.  78 kb/s

View Answer  
4
Correct Answer :

68 kb/s


Explanation :
No Explanation available for this question

What is the bit error for a non-coherent FSK system modulated by a PCM signal bit stream and operating at 10 MHz Frequency deviation is 850 Hz, system data rate is 100 bits/sec peak to peak carrier amplitude is 2 volts and double noise spectral density is 1.0x10-4 volts/Hz.

1.  2.74x10-6

2.  4.742x10-6

3.  3.74 x 10-6

4.   5.74 x 10-6

View Answer  
4
Correct Answer :

5.74 x 10-6


Explanation :
No Explanation available for this question

What is the average probability of error in a coherent FSK(1 bit decoding) system transmitting binary data @2.5x106 bits/sec, while Gaussian noise of zero mean and spectral density of required signal is 1 µV

1.  0.55x10-3

2.  0.75x10-3

3.  0.65 x10-3

4.  0.85 x10-3

View Answer  
4
Correct Answer :

0.85 x10-3


Explanation :
No Explanation available for this question
Previous Next

Interview Questions

MongoDB
Java Script
Node JS
PHP
JQuery
Python