Question 1

In BPSK, the_________      of constant amplitude carrier signal is switched between two values according to the two possible values.

Accepted Answer

A) amplitude 
B) phase 
C) frequency 
D) angle 
A) amplitude 
B) phase 
C) frequency 
D) angle B

Question 2

QPSK provides twice the bandwidth efficiency and_________    energy efficiency as compared to BPSK.

Accepted Answer

A) twice 
B) half 
C) same 
D) four times 
A) twice 
B) half 
C) same 
D) four times C

Question 3

Luminance refers to_________

Accepted Answer

A) contrast 
B) diffusion 
C) brightness 
D) aperture 
A) contrast 
B) diffusion 
C) brightness 
D) aperture C

Question 4

How many lines are there in an NTSC signal?

Accepted Answer

A) 1024 
B) 1856 
C) 625 
D) 525 
A) 1024 
B) 1856 
C) 625 
D) 525

Question 5

TDMA stands for_________

Accepted Answer

A) time division multiple access 
B) time domain multiple access 
C) time division mutual access 
D) time domain mutual access 
A) time division multiple access 
B) time domain multiple access 
C) time division mutual access 
D) time domain mutual access

Question 6

Power can be coupled into or out of a waveguide with a magnetic field probe.

Accepted Answer

A) True 
 B)False

Question 7

What is the input impedance to a lossless antenna, at resonance?

Accepted Answer

A) infinite 
B) 0 
C) resistive 
D) capacitive 
A) infinite 
B) 0 
C) resistive 
D) capacitive

Question 8

How we can define the satisfactory performance of an analog microwave system?

Accepted Answer

A) carrier to noise ratio that exceeds a given value 
B) carrier to noise ratio that is below a given value 
C) an erp value that exceeds a given value 
D) an erp value that is below a given value 
A) carrier to noise ratio that exceeds a given value 
B) carrier to noise ratio that is below a given value 
C) an erp value that exceeds a given value 
D) an erp value that is below a given value

Question 9

Which of the following is not a linear modulation technique?

Accepted Answer

A) oqpsk 
B) ?/4 qpsk 
C) fsk 
D) bpsk 
A) oqpsk 
B) ?/4 qpsk 
C) fsk 
D) bpsk

Question 10

In DPSK system, input signal is differentially encoded and then modulated using a_________      modulator.

Accepted Answer

A) amplitude 
B) frequency 
C) bpsk 
D) qpsk 
A) amplitude 
B) frequency 
C) bpsk 
D) qpsk

Question 11

What is the full form of LOS?

Accepted Answer

A) level of signal 
B) line of sight 
C) loss of signal 
D) level of sight 
A) level of signal 
B) line of sight 
C) loss of signal 
D) level of sight

Question 12

QPSK has_________      the bandwidth efficiency of BPSK.

Accepted Answer

A) twice 
B) same 
C) half 
D) four times 
A) twice 
B) same 
C) half 
D) four times

Question 13

The bandwidth of OQPSK is_________    to QPSK.

Accepted Answer

A) identical 
B) twice 
C) half 
D) four times 
A) identical 
B) twice 
C) half 
D) four times

Question 14

Which term is used when signals move from one line to another?

Accepted Answer

A) path switching 
B) space switching 
C) line switching 
D) cross-point switching 
A) path switching 
B) space switching 
C) line switching 
D) cross-point switching

Question 15

The polarization of plane waves received from satellite is changed by_________

Accepted Answer

A) faraday rotation 
B) gamma rays 
C) helical rotation 
D) distance travelled 
A) faraday rotation 
B) gamma rays 
C) helical rotation 
D) distance travelled

Question 16

What is the full form of OQPSK?

Accepted Answer

A) optical quadrature phase shift keying 
B) orthogonal quadrature pulse shift keying 
C) orthogonal quadrature phase shift keying 
D) offset quadrature phase shift keying 
A) optical quadrature phase shift keying 
B) orthogonal quadrature pulse shift keying 
C) orthogonal quadrature phase shift keying 
D) offset quadrature phase shift keying

Question 17

Which of the following is a combined linear and constant envelope technique?

Accepted Answer

A) mpsk 
B) psk 
C) bpsk 
D) qpsk 
A) mpsk 
B) psk 
C) bpsk 
D) qpsk

Question 18

BPSK uses non-coherent demodulator.

Accepted Answer

A) True 
 B)False

Question 19

QPSK signals perform better than OQPSK in the presence of phase jitter.

Accepted Answer

A) True 
 B)False

Question 20

Which of the following is not a detection technique used for detection of ?/4 QPSK signals?

Accepted Answer

A) baseband differential detection 
B) if differential detection 
C) fm discriminator detection 
D) envelope detection 
A) baseband differential detection 
B) if differential detection 
C) fm discriminator detection 
D) envelope detection

In BPSK, the_________ of constant amplitude carrier signal is switched between two values according to the two possible values.

QPSK provides twice the bandwidth efficiency and_________ energy efficiency as compared to BPSK.

Luminance refers to_________

How many lines are there in an NTSC signal?

TDMA stands for_________

Power can be coupled into or out of a waveguide with a magnetic field probe.

What is the input impedance to a lossless antenna, at resonance?

How we can define the satisfactory performance of an analog microwave system?

Which of the following is not a linear modulation technique?

In DPSK system, input signal is differentially encoded and then modulated using a_________ modulator.

What is the full form of LOS?

QPSK has_________ the bandwidth efficiency of BPSK.

The bandwidth of OQPSK is_________ to QPSK.

Which term is used when signals move from one line to another?

The polarization of plane waves received from satellite is changed by_________

What is the full form of OQPSK?

Which of the following is a combined linear and constant envelope technique?

BPSK uses non-coherent demodulator.

QPSK signals perform better than OQPSK in the presence of phase jitter.

Which of the following is not a detection technique used for detection of ?/4 QPSK signals?

Modulation and Demodulation Techniques

Information Theory and Communication Techniques

Waveform Logic, Pcm Encoding, Vocoder Analysis, and Antenna Radiations

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

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Exam 4: Microwave Communication and Modulation

In BPSK, the_________ of constant amplitude carrier signal is switched between two values according to the two possible values.

QPSK provides twice the bandwidth efficiency and_________ energy efficiency as compared to BPSK.

Luminance refers to_________

How many lines are there in an NTSC signal?

TDMA stands for_________

Power can be coupled into or out of a waveguide with a magnetic field probe.

What is the input impedance to a lossless antenna, at resonance?

How we can define the satisfactory performance of an analog microwave system?

Which of the following is not a linear modulation technique?

In DPSK system, input signal is differentially encoded and then modulated using a_________ modulator.

What is the full form of LOS?

QPSK has_________ the bandwidth efficiency of BPSK.

The bandwidth of OQPSK is_________ to QPSK.

Which term is used when signals move from one line to another?

The polarization of plane waves received from satellite is changed by_________

What is the full form of OQPSK?

Which of the following is a combined linear and constant envelope technique?

BPSK uses non-coherent demodulator.

QPSK signals perform better than OQPSK in the presence of phase jitter.

Which of the following is not a detection technique used for detection of ?/4 QPSK signals?

Modulation and Demodulation Techniques

Information Theory and Communication Techniques

Waveform Logic, Pcm Encoding, Vocoder Analysis, and Antenna Radiations

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