The key electronic component in a communications satellite is the A. telemetry equipment B. on-board computer C. command and control system D. transponder

The key electronic component in a communications satellite is the
A. telemetry equipment
B. on-board computer
C. command and control system
D. transponder
by

1 Answer

Answer :

D. transponder
by

Related questions

Which of the following is the basic component of a communications satellite receiver? A. On-board computer B. Reflector C. Telemetry D. Transponder

Description : Which of the following is the basic component of a communications satellite receiver? A. On-board computer B. Reflector C. Telemetry D. Transponder

Last Answer : D. Transponder

The satellite subsystem that monitors and controls the satellite is the A. propulsion subsystem B. power subsystem C. communications subsystem D. telemetry, tracking, and command subsystem

Description : The satellite subsystem that monitors and controls the satellite is the A. propulsion subsystem B. power subsystem C. communications subsystem D. telemetry, tracking, and command subsystem

Last Answer : D. telemetry, tracking, and command subsystem

The satellite communications channels in a transponder are defined by the A. LNA B. bandpass filter C. mixer D. input signals

Description : The satellite communications channels in a transponder are defined by the A. LNA B. bandpass filter C. mixer D. input signals

Last Answer : B. bandpass filter

What satellite subsystem monitors onboard conditions such as temperature and battery voltage and transmits this data back to a ground station for analysis? A. Communications subsystem B. AKM C. TTC D. Transponder

Description : What satellite subsystem monitors onboard conditions such as temperature and battery voltage and transmits this data back to a ground station for analysis? A. Communications subsystem B. AKM C. TTC D. Transponder

Last Answer : C. TTC

What is the quardband between transponder channels in the commercial C-band for satellite communications? A. 6 MHz B. 36 MHz C. 4 MHz D. 2 MHz

Description : What is the quardband between transponder channels in the commercial C-band for satellite communications? A. 6 MHz B. 36 MHz C. 4 MHz D. 2 MHz

Last Answer : C. 4 MHz

ECE Board Exam March 1996 It is a spacecraft placed in orbit around the earth carrying onboard microwave receiver and transmitting equipments. A. Fiber optic equipment B. Communications satellite C. Wireless radio system D. Coaxial cable syste

Description : ECE Board Exam March 1996 It is a spacecraft placed in orbit around the earth carrying onboard microwave receiver and transmitting equipments. A. Fiber optic equipment B. Communications satellite C. Wireless radio system D. Coaxial cable syste

Last Answer : B. Communications satellite

Which of the following satellite subsystem provides stabilization in orbit and senses changes in orientation? A. Attitude control subsystem B. TTC C. AKM D. Transponder

Description : Which of the following satellite subsystem provides stabilization in orbit and senses changes in orientation? A. Attitude control subsystem B. TTC C. AKM D. Transponder

Last Answer : A. Attitude control subsystem

Illustrate how telemetry tracking and command system used in satellite communication.

Description : Illustrate how telemetry tracking and command system used in satellite communication.

Last Answer : Telemetry, Tracking and Command (TT&C) Subsystem These systems are partly on the satellite and partly at the control earth station. They support the functions of the spacecraft management. Telemetry System ... pulse to the satellite. Then the satellite executes these commands.   OR  

The use of telecommunication for the transmission of signals to initiate, modify or terminate functions of equipment at a distance. A. Tracking B. Telemetry C. Telecommand D. Space telemetry

Description : The use of telecommunication for the transmission of signals to initiate, modify or terminate functions of equipment at a distance. A. Tracking B. Telemetry C. Telecommand D. Space telemetry

Last Answer : C. Telecommand

Designed to receive a signal from a transmitting station on the ground and retransmit it to a receiving station located elsewhere A. Communication satellite B. Repeater C. Relay station D. Transponder

Description : Designed to receive a signal from a transmitting station on the ground and retransmit it to a receiving station located elsewhere A. Communication satellite B. Repeater C. Relay station D. Transponder

Last Answer : A. Communication satellite

Essentially a satellite ___________ is a radio repeater in the sky A. transponder B. comparator C. duplexer D. billboard

Description : Essentially a satellite ___________ is a radio repeater in the sky A. transponder B. comparator C. duplexer D. billboard

Last Answer : A. transponder

A satellite signal transmitted from a satellite transponder to earth’s station. A. Uplink B. Downlink C. Terrestrial D. Earthbound

Description : A satellite signal transmitted from a satellite transponder to earth’s station. A. Uplink B. Downlink C. Terrestrial D. Earthbound

Last Answer : B. Downlink

What is the first passive satellite transponder? A. Sun B. Early Bird C. Score D. Moon

Description : What is the first passive satellite transponder? A. Sun B. Early Bird C. Score D. Moon

Last Answer : B. Early Bird

What is the data rate in Mbps of a single satellite transponder considering an S/N of 30 dB? A. 35.8 B. 3.58 C. 358 D. 3580

Description : What is the data rate in Mbps of a single satellite transponder considering an S/N of 30 dB? A. 35.8 B. 3.58 C. 358 D. 3580

Last Answer : C. 358

What is the typical satellite transponder bandwidth? A. 24 MHz B. 500 MHz C. 36 MHz D. 48 MHz

Description : What is the typical satellite transponder bandwidth? A. 24 MHz B. 500 MHz C. 36 MHz D. 48 MHz

Last Answer : C. 36 MHz

Known as the satellite transmitted signal form a satellite transponder to earth’s station. A. Uplink B. Down link C. RHCP D. Vertically polarized

Description : Known as the satellite transmitted signal form a satellite transponder to earth’s station. A. Uplink B. Down link C. RHCP D. Vertically polarized

Last Answer : B. Down link

The first passive satellite transponder. A. Early bird B. Score C. Moon D. Sputnik

Description : The first passive satellite transponder. A. Early bird B. Score C. Moon D. Sputnik

Last Answer : C. Moon

Satellite signal transmitted from a satellite transponder to earth’s station. A. Vertically polarized B. Uplink C. Downlink D. RHCP

Description : Satellite signal transmitted from a satellite transponder to earth’s station. A. Vertically polarized B. Uplink C. Downlink D. RHCP

Last Answer : C. Downlink

In satellite communications, what means of attitude control is using the angular momentum of the spinning body to provide the roll and yaw stabilization? A. Spin stabilization B. Radial stabilization C. Three-axis stabilization D. Station keeping

Description : In satellite communications, what means of attitude control is using the angular momentum of the spinning body to provide the roll and yaw stabilization? A. Spin stabilization B. Radial stabilization C. Three-axis stabilization D. Station keeping

Last Answer : A. Spin stabilization

The line control unit (LCU) operates on the data digital form. A. Data communications equipment (DCE) B. UART C. Modem D. Data terminal equipment (DTE)

Description : The line control unit (LCU) operates on the data digital form. A. Data communications equipment (DCE) B. UART C. Modem D. Data terminal equipment (DTE)

Last Answer : D. Data terminal equipment (DTE)

What is the free space attenuation of a satellite communications system operating at 36,000 km above the earth at 5.0 GHz? A. 198 dB B. 202 dB C. 142 dB D. 138 dB

Description : What is the free space attenuation of a satellite communications system operating at 36,000 km above the earth at 5.0 GHz? A. 198 dB B. 202 dB C. 142 dB D. 138 dB

Last Answer : A. 198 dB

One of the first satellite system catering personal based communications services scheduled for operation. A. Iridium system B. Plutonium system C. Indium system D. Gallium system

Description : One of the first satellite system catering personal based communications services scheduled for operation. A. Iridium system B. Plutonium system C. Indium system D. Gallium system

Last Answer : A. Iridium system

ECE Board Exam March 1996 One type of pulse communications system uses pulse that appear as a group, and which vary in number according to the loudness of the voice. This type of pulse modulation is called A. pulse duration modulation B. pulse amplitude modulation C. pulse code modulation D. pulse position modulation

Description : ECE Board Exam March 1996 One type of pulse communications system uses pulse that appear as a group, and which vary in number according to the loudness of the voice. This type of ... A. pulse duration modulation B. pulse amplitude modulation C. pulse code modulation D. pulse position modulation

Last Answer : A. pulse duration modulation

The use of telecommunication for automatic indicating or recording measurement at the distance from the measuring instrument. A. Monitoring B. Tracking C. Telemetry D. Telecommand

Description : The use of telecommunication for automatic indicating or recording measurement at the distance from the measuring instrument. A. Monitoring B. Tracking C. Telemetry D. Telecommand

Last Answer : C. Telemetry

Which does not use vertical polarization antenna? A. AM Broadcasting B. FM Broadcasting C. Mobile Communications D. Satellite Communications

Description : Which does not use vertical polarization antenna? A. AM Broadcasting B. FM Broadcasting C. Mobile Communications D. Satellite Communications

Last Answer : B. FM Broadcasting

Which of the following is the most common application of satellite? A. Surveillance B. Military application C. Communications D. Newscasting

Description : Which of the following is the most common application of satellite? A. Surveillance B. Military application C. Communications D. Newscasting

Last Answer : C. Communications

The main function of a communications satellite is a/ an A. repeater B. reflector C. beacon D. observation platform

Description : The main function of a communications satellite is a/ an A. repeater B. reflector C. beacon D. observation platform

Last Answer : A. repeater

The frequency of Ku band for satellite communications. A. 6/4 GHz B. 14/11 GHz C. 12/14 GHz D. 4/8 GHz

Description : The frequency of Ku band for satellite communications. A. 6/4 GHz B. 14/11 GHz C. 12/14 GHz D. 4/8 GHz

Last Answer : B. 14/11 GHz

How does spatial isolation technique in satellite communications avoid interference? A. Use of different polarity antennas B. Use of different types of antennas C. Employment of highly directional spot-beam antennas D. Use of low gain antennas

Description : How does spatial isolation technique in satellite communications avoid interference? A. Use of different polarity antennas B. Use of different types of antennas C. Employment of highly directional spot-beam antennas D. Use of low gain antennas

Last Answer : C. Employment of highly directional spot-beam antennas

What is the current frequency band given most attenuation for satellite communications? A. Ku B. C band C. J D. P

Description : What is the current frequency band given most attenuation for satellite communications? A. Ku B. C band C. J D. P

Last Answer : A. Ku

Name one or more sources of noise bearing on electronic communications. A. Steam boiler B. Galaxies C. Internal combustion engine D. Both B and C

Description : Name one or more sources of noise bearing on electronic communications. A. Steam boiler B. Galaxies C. Internal combustion engine D. Both B and C

Last Answer : D. Both B and C

ECE Board Exam March 1996 Communications code is ____________. A. eight bits per character B. agreed upon in advance between sender and receiver C. the same in all modern computers D. either seven or eight bits per character

Description : ECE Board Exam March 1996 Communications code is ____________. A. eight bits per character B. agreed upon in advance between sender and receiver C. the same in all modern computers D. either seven or eight bits per character

Last Answer : B. agreed upon in advance between sender and receiver

The primary purpose of the data modem is to A. interface analog terminal equipment to analog communications channel B. interface digital terminal equipment to analog communications channel C. interface analog terminal equipment to digital communications channel D. interface digital terminal equipment to digital communications channel

Description : The primary purpose of the data modem is to A. interface analog terminal equipment to analog communications channel B. interface digital terminal equipment to analog communications ... to digital communications channel D. interface digital terminal equipment to digital communications channel

Last Answer : B. interface digital terminal equipment to analog communications channel

The use of telecommunication for the transmission of signals to initiate, modify or terminate functions of equipment at a distance. A. Tracking B. space command C. Telecommand D. Trunking

Description : The use of telecommunication for the transmission of signals to initiate, modify or terminate functions of equipment at a distance. A. Tracking B. space command C. Telecommand D. Trunking

Last Answer : C. Telecommand

The selection of the code 7600 on a transponder indicates: a. Loss of communications b. Distress c. Urgency d. Hijacking

Description : The selection of the code 7600 on a transponder indicates: a. Loss of communications b. Distress c. Urgency d. Hijacking

Last Answer : a. Loss of communications

The selection of the code 7600 on a transponder indicates: a. Loss of communications b. Distress c. Urgency d. Hijacking

Description : The selection of the code 7600 on a transponder indicates: a. Loss of communications b. Distress c. Urgency d. Hijacking

Last Answer : a. Loss of communications

Which of the following is not usually a part of a transponder are defined by the A. LNA B. Mixer C. Modulator D. HPA

Description : Which of the following is not usually a part of a transponder are defined by the A. LNA B. Mixer C. Modulator D. HPA

Last Answer : C. Modulator

How many transponder channels are realized in the commercial C-band without frequency re-use? A. 24 B. 12 C. 36 D. 48

Description : How many transponder channels are realized in the commercial C-band without frequency re-use? A. 24 B. 12 C. 36 D. 48

Last Answer : B. 12

What is the maximum theoretical data rate of the above problem if one transponder is used for binary transmission? A. 36 Mbps B. 72 Mbps C.18 Mbps D. 144 Mbps

Description : What is the maximum theoretical data rate of the above problem if one transponder is used for binary transmission? A. 36 Mbps B. 72 Mbps C.18 Mbps D. 144 Mbps

Last Answer : B. 72 Mbps

Combination of modulator, channel and detector. A. Transceiver B. Discrete channel C. T/R channel D. Transponder

Description : Combination of modulator, channel and detector. A. Transceiver B. Discrete channel C. T/R channel D. Transponder

Last Answer : B. Discrete channel

ECE Board Exam March 1996 The point on the satellite orbit, closest to the earth is A. prograde B. perigee C. zenith D. apogee

Description : ECE Board Exam March 1996 The point on the satellite orbit, closest to the earth is A. prograde B. perigee C. zenith D. apogee

Last Answer : B. perigee

Electronic equipment used to measure standing wave ration. A. Reflectometer B. Wavemeter C. Altimeter D. Multimeter

Description : Electronic equipment used to measure standing wave ration. A. Reflectometer B. Wavemeter C. Altimeter D. Multimeter

Last Answer : A. Reflectometer

The executive branch of government in charge of policy making in the telecommunications. A. National telecommunications commission B. Telecommunications control bureau C. Department of transportation and communications D. Bureau of telecommunications

Description : The executive branch of government in charge of policy making in the telecommunications. A. National telecommunications commission B. Telecommunications control bureau C. Department of transportation and communications D. Bureau of telecommunications

Last Answer : C. Department of transportation and communications

In telecommunications when we call data communications it means the transmission of________. A. Voice and video B. Voice C. Video D. Computer data

Description : In telecommunications when we call data communications it means the transmission of________. A. Voice and video B. Voice C. Video D. Computer data

Last Answer : D. Computer data

When troubleshooting electronic equipment, the FIRST step to be taken before testing the circuit voltage is to _________. A. set the meter to the lowest range B. check the voltage supply from the power source C. remove the suspected component D. check the current flow through the circuit

Description : When troubleshooting electronic equipment, the FIRST step to be taken before testing the circuit voltage is to _________. A. set the meter to the lowest range B. check the voltage supply from the power source C. remove the suspected component D. check the current flow through the circuit

Last Answer : Answer: B

ECE Board Exam March 1996 LORAN is a navigation system used primarily for A. approach control B. obtaining fixes over large distances C. blind landing D. automatic collision warning

Description : ECE Board Exam March 1996 LORAN is a navigation system used primarily for A. approach control B. obtaining fixes over large distances C. blind landing D. automatic collision warning

Last Answer : B. obtaining fixes over large distances

ECE Board Exam March 1996 LORAN is a navigational system used primarily for _____________. A. blind landing B. obtaining your fixes location over large distances C. automatic collision warning D. approach control

Description : ECE Board Exam March 1996 LORAN is a navigational system used primarily for _____________. A. blind landing B. obtaining your fixes location over large distances C. automatic collision warning D. approach control

Last Answer : B. obtaining your fixes location over large distances

Is a non-coherent light source foe optical communications system. a. ILD b. LED c. APD d. PIN Diode

Description : Is a non-coherent light source foe optical communications system. a. ILD b. LED c. APD d. PIN Diode

Last Answer : b. LED

An automated ship-to-shore distress alerting system using satellites and advanced terrestrial communications systems. A. GPS B. Iridium system C. INMARSAT D. GMDSS

Description : An automated ship-to-shore distress alerting system using satellites and advanced terrestrial communications systems. A. GPS B. Iridium system C. INMARSAT D. GMDSS

Last Answer : D. GMDSS

What term is used to describe a spread spectrum communications system in which a very fast binary bit stream is used to shift the phase of an RF carrier? A. Frequency hopping B. Direct sequence C. Binary phase-shift keying D. Phase compandored spread spectrum

Description : What term is used to describe a spread spectrum communications system in which a very fast binary bit stream is used to shift the phase of an RF carrier? A. Frequency hopping B. Direct sequence C. Binary phase-shift keying D. Phase compandored spread spectrum

Last Answer : B. Direct sequence