Miscellaneous Problems on Communication Systems
PHXII15:COMMUNICATION SYSTEMS

356743 Find the length of a half-wave dipole at frequency signal 30 \(MHz\).

1 \(2\,m\)
2 \(5\,m\)
3 \(7\,m\)
4 \(10\,m\)
PHXII15:COMMUNICATION SYSTEMS

356744 Estimate the fastest bit rate capable of being carried by light of wavelength \(1.2 \,\mu {m}\). The number of phone calls that could be carried at this bit rate is found to be \({N} \times 10^{5}\). Find the value of \({N}\) is
(Take bandwidth of optical fibre \(=2\, {GHz}\) )

1 1.8
2 2.5
3 4.6
4 7.2
PHXII15:COMMUNICATION SYSTEMS

356745 1% of \({10^{12}}\;Hz\) of a satellite link was used for telephony. Find the number of channels (or subscribers) if each channel is \(8\,kHz.\)

1 \(2.5 \times 10^{7}\)
2 \(1.25 \times 10^{7}\)
3 \(2.5 \times 10^{8}\)
4 \(1.25 \times 10^{6}\)
PHXII15:COMMUNICATION SYSTEMS

356746 If a radio receiver amplifies all the signal frequencies equally well, it is said to have high

1 sensitivity
2 selectivity
3 distortion
4 fidelity
PHXII15:COMMUNICATION SYSTEMS

356743 Find the length of a half-wave dipole at frequency signal 30 \(MHz\).

1 \(2\,m\)
2 \(5\,m\)
3 \(7\,m\)
4 \(10\,m\)
PHXII15:COMMUNICATION SYSTEMS

356744 Estimate the fastest bit rate capable of being carried by light of wavelength \(1.2 \,\mu {m}\). The number of phone calls that could be carried at this bit rate is found to be \({N} \times 10^{5}\). Find the value of \({N}\) is
(Take bandwidth of optical fibre \(=2\, {GHz}\) )

1 1.8
2 2.5
3 4.6
4 7.2
PHXII15:COMMUNICATION SYSTEMS

356745 1% of \({10^{12}}\;Hz\) of a satellite link was used for telephony. Find the number of channels (or subscribers) if each channel is \(8\,kHz.\)

1 \(2.5 \times 10^{7}\)
2 \(1.25 \times 10^{7}\)
3 \(2.5 \times 10^{8}\)
4 \(1.25 \times 10^{6}\)
PHXII15:COMMUNICATION SYSTEMS

356746 If a radio receiver amplifies all the signal frequencies equally well, it is said to have high

1 sensitivity
2 selectivity
3 distortion
4 fidelity
PHXII15:COMMUNICATION SYSTEMS

356743 Find the length of a half-wave dipole at frequency signal 30 \(MHz\).

1 \(2\,m\)
2 \(5\,m\)
3 \(7\,m\)
4 \(10\,m\)
PHXII15:COMMUNICATION SYSTEMS

356744 Estimate the fastest bit rate capable of being carried by light of wavelength \(1.2 \,\mu {m}\). The number of phone calls that could be carried at this bit rate is found to be \({N} \times 10^{5}\). Find the value of \({N}\) is
(Take bandwidth of optical fibre \(=2\, {GHz}\) )

1 1.8
2 2.5
3 4.6
4 7.2
PHXII15:COMMUNICATION SYSTEMS

356745 1% of \({10^{12}}\;Hz\) of a satellite link was used for telephony. Find the number of channels (or subscribers) if each channel is \(8\,kHz.\)

1 \(2.5 \times 10^{7}\)
2 \(1.25 \times 10^{7}\)
3 \(2.5 \times 10^{8}\)
4 \(1.25 \times 10^{6}\)
PHXII15:COMMUNICATION SYSTEMS

356746 If a radio receiver amplifies all the signal frequencies equally well, it is said to have high

1 sensitivity
2 selectivity
3 distortion
4 fidelity
PHXII15:COMMUNICATION SYSTEMS

356743 Find the length of a half-wave dipole at frequency signal 30 \(MHz\).

1 \(2\,m\)
2 \(5\,m\)
3 \(7\,m\)
4 \(10\,m\)
PHXII15:COMMUNICATION SYSTEMS

356744 Estimate the fastest bit rate capable of being carried by light of wavelength \(1.2 \,\mu {m}\). The number of phone calls that could be carried at this bit rate is found to be \({N} \times 10^{5}\). Find the value of \({N}\) is
(Take bandwidth of optical fibre \(=2\, {GHz}\) )

1 1.8
2 2.5
3 4.6
4 7.2
PHXII15:COMMUNICATION SYSTEMS

356745 1% of \({10^{12}}\;Hz\) of a satellite link was used for telephony. Find the number of channels (or subscribers) if each channel is \(8\,kHz.\)

1 \(2.5 \times 10^{7}\)
2 \(1.25 \times 10^{7}\)
3 \(2.5 \times 10^{8}\)
4 \(1.25 \times 10^{6}\)
PHXII15:COMMUNICATION SYSTEMS

356746 If a radio receiver amplifies all the signal frequencies equally well, it is said to have high

1 sensitivity
2 selectivity
3 distortion
4 fidelity