Question 1

What is bit depth?

Accepted Answer

A) number of quantization level 
B) interval between two quantization levels 
C) number of possible digital values to represent each sample 
D) none of the mentioned 
A) number of quantization level 
B) interval between two quantization levels 
C) number of possible digital values to represent each sample 
D) none of the mentioned C

Question 2

In PCM the samples are dependent on

Accepted Answer

A) time 
B) frequency 
C) quanization leavel 
D) interval between quantization level 
A) time 
B) frequency 
C) quanization leavel 
D) interval between quantization level A

Question 3

__________ is often called the formant of the speech signal.

Accepted Answer

A) pitch frequency 
B) voice pitch 
C) pole frequency 
D) central frequency 
A) pitch frequency 
B) voice pitch 
C) pole frequency 
D) central frequency C

Question 4

What is the full form of ERP?

Accepted Answer

A) effective radiated power 
B) effective reflected power 
C) equivalent radiated power 
D) equivalent reflected power 
A) effective radiated power 
B) effective reflected power 
C) equivalent radiated power 
D) equivalent reflected power

Question 5

Formant vocoders use large number of control signals.

Accepted Answer

A) True 
 B)False

Question 6

Measured on the ground, the field strength of a horizontally polarized half wave dipole antenna is strongest_________

Accepted Answer

A) in one direction 
B) in two directions 
C) depends on the number of elements 
D) depends on the shape of antenna 
A) in one direction 
B) in two directions 
C) depends on the number of elements 
D) depends on the shape of antenna

Question 7

Choosing a discrete value that is near but not exactly at the analog signal level leads to

Accepted Answer

A) pcm error 
B) quantization error 
C) pam error 
D) sampling error 
A) pcm error 
B) quantization error 
C) pam error 
D) sampling error

Question 8

Channel vocoders are the time domain vocoders.

Accepted Answer

A) True 
 B)False

Question 9

Sample resolution for LPCM          bits per sample.

Accepted Answer

A) 8 
B) 16 
C) 24 
D) all of the mentioned 
A) 8 
B) 16 
C) 24 
D) all of the mentioned

Question 10

The length of the code-word obtained by encoding quantized sample is equal to

Accepted Answer

A) l=log(to the base 2)l 
B) l=log(to the base 10)l 
C) l=2log(to the base 2)l 
D) l=log(to the base 2)l/2 
A) l=log(to the base 2)l 
B) l=log(to the base 10)l 
C) l=2log(to the base 2)l 
D) l=log(to the base 2)l/2

Question 11

Cepstrum vocoder uses_________

Accepted Answer

A) wavelet transform 
B) inverse wavelet transform 
C) cosine transform 
D) inverse fourier transform 
A) wavelet transform 
B) inverse wavelet transform 
C) cosine transform 
D) inverse fourier transform

Question 12

In which waveform logic 1 is represented by equal amplitude alternating pulses?

Accepted Answer

A) unipolar rz 
B) bipolar rz 
C) rz-ami 
D) manchester coding 
A) unipolar rz 
B) bipolar rz 
C) rz-ami 
D) manchester coding

Question 13

What is the other name for half-wave dipole antenna?

Accepted Answer

A) helical antenna 
B) isotropic antenna 
C) hertz antenna 
D) maxwell antenna 
A) helical antenna 
B) isotropic antenna 
C) hertz antenna 
D) maxwell antenna

Question 14

The signals which are obtained by encoding each quantized signal into a digital word is called as

Accepted Answer

A) pam signal 
B) pcm signal 
C) fm signal 
D) sampling and quantization 
A) pam signal 
B) pcm signal 
C) fm signal 
D) sampling and quantization

Question 15

Vocoders analyse the speech signals at

Accepted Answer

A) transmitter 
B) receiver 
C) channel 
D) if filter 
A) transmitter 
B) receiver 
C) channel 
D) if filter

Question 16

The real part of an antenna's input impedance is due to_________

Accepted Answer

A) swr 
B) radiated signal 
C) reflected signal 
D) refracted signal 
A) swr 
B) radiated signal 
C) reflected signal 
D) refracted signal

Question 17

Which of the following pronunciations lead to voiced sound?

Accepted Answer

A) 'f' 
B) 's' 
C) 'sh' 
D) 'm' 
A) 'f' 
B) 's' 
C) 'sh' 
D) 'm'

Question 18

When an antenna radiates more energy in one direction than in other directions, it is called_________

Accepted Answer

A) selectivity 
B) directivity 
C) active antenna 
D) resonance 
A) selectivity 
B) directivity 
C) active antenna 
D) resonance

Question 19

In PCM encoding, quantization level varies as a function of_________

Accepted Answer

A) frequency 
B) amplitude 
C) square of frequency 
D) square of amplitude 
A) frequency 
B) amplitude 
C) square of frequency 
D) square of amplitude

Question 20

Vocoders_________          the voice at the receiver.

Accepted Answer

A) analyse 
B) synthesize 
C) modulate 
D) evaluate 
A) analyse 
B) synthesize 
C) modulate 
D) evaluate

What is bit depth?

In PCM the samples are dependent on

__________ is often called the formant of the speech signal.

What is the full form of ERP?

Formant vocoders use large number of control signals.

Measured on the ground, the field strength of a horizontally polarized half wave dipole antenna is strongest_________

Choosing a discrete value that is near but not exactly at the analog signal level leads to

Channel vocoders are the time domain vocoders.

Sample resolution for LPCM bits per sample.

The length of the code-word obtained by encoding quantized sample is equal to

Cepstrum vocoder uses_________

In which waveform logic 1 is represented by equal amplitude alternating pulses?

What is the other name for half-wave dipole antenna?

The signals which are obtained by encoding each quantized signal into a digital word is called as

Vocoders analyse the speech signals at

The real part of an antenna's input impedance is due to_________

Which of the following pronunciations lead to voiced sound?

When an antenna radiates more energy in one direction than in other directions, it is called_________

In PCM encoding, quantization level varies as a function of_________

Vocoders_________ the voice at the receiver.

Modulation and Demodulation Techniques

Information Theory and Communication Techniques

Microwave Communication and Modulation

M-Ary Signalling and Pulse Shaping Techniques

Signal Filtering and Equalization Techniques

Information Theory and Coding Techniques

Channel Coding and Error Correction Techniques

Algorithms and Techniques for Communication System Security and Error Correction

Modulation Schemes and Access Techniques for Spread Spectrum Systems

Digital and Analog Telecommunications Standards

Filters

Exam 3: Waveform Logic, Pcm Encoding, Vocoder Analysis, and Antenna Radiations

What is bit depth?

In PCM the samples are dependent on

__________ is often called the formant of the speech signal.

What is the full form of ERP?

Formant vocoders use large number of control signals.

Measured on the ground, the field strength of a horizontally polarized half wave dipole antenna is strongest_________

Choosing a discrete value that is near but not exactly at the analog signal level leads to

Channel vocoders are the time domain vocoders.

Sample resolution for LPCM bits per sample.

The length of the code-word obtained by encoding quantized sample is equal to

Cepstrum vocoder uses_________

In which waveform logic 1 is represented by equal amplitude alternating pulses?

What is the other name for half-wave dipole antenna?

The signals which are obtained by encoding each quantized signal into a digital word is called as

Vocoders analyse the speech signals at

The real part of an antenna's input impedance is due to_________

Which of the following pronunciations lead to voiced sound?

When an antenna radiates more energy in one direction than in other directions, it is called_________

In PCM encoding, quantization level varies as a function of_________

Vocoders_________ the voice at the receiver.

Modulation and Demodulation Techniques

Information Theory and Communication Techniques

Microwave Communication and Modulation

M-Ary Signalling and Pulse Shaping Techniques

Signal Filtering and Equalization Techniques

Information Theory and Coding Techniques

Channel Coding and Error Correction Techniques

Algorithms and Techniques for Communication System Security and Error Correction

Modulation Schemes and Access Techniques for Spread Spectrum Systems

Digital and Analog Telecommunications Standards

Filters