What is the primary function of attitude control systems on a spacecraft?
a) Control the spacecraft’s speed
b) Maintain the spacecraft’s orientation
c) Generate electrical power
d) Monitor radiation levels
Answer: b) Maintain the spacecraft’s orientation
Which type of propulsion system is commonly used for making precise adjustments to a spacecraft’s orbit?
a) Ion propulsion
b) Chemical propulsion
c) Nuclear propulsion
d) Solar sail propulsion
Answer: b) Chemical propulsion
Which instrument is crucial for determining a spacecraft’s position relative to Earth?
a) Accelerometer
b) Magnetometer
c) Gyroscope
d) Radio beacon
Answer: d) Radio beacon
What role does a star tracker play in spacecraft operations?
a) Measures the spacecraft’s velocity
b) Communicates with ground stations
c) Determines the spacecraft’s orientation using star positions
d) Monitors solar radiation
Answer: c) Determines the spacecraft’s orientation using star positions
Which subsystem manages the distribution of electrical power on a spacecraft?
a) Telecommunications
b) Thermal control
c) Power management and distribution
d) Attitude control
Answer: c) Power management and distribution
What is the purpose of a thermal control system on a spacecraft?
a) Regulate the internal temperature
b) Generate electrical power
c) Transmit data to Earth
d) Monitor atmospheric conditions
Answer: a) Regulate the internal temperature
Which component of a spacecraft is responsible for storing and processing data from onboard instruments?
a) Transponder
b) Telemetry system
c) Command and data handling system
d) Antenna
Answer: c) Command and data handling system
Which type of orbit is commonly used for Earth observation satellites that maintain a fixed position relative to the Earth’s surface?
a) Geostationary orbit
b) Low Earth orbit
c) Polar orbit
d) Heliocentric orbit
Answer: a) Geostationary orbit
What is the primary purpose of a payload on a spacecraft?
a) Generate electrical power
b) Transmit telemetry data
c) Perform scientific or operational missions
d) Maintain spacecraft stability
Answer: c) Perform scientific or operational missions
Which communication protocol is commonly used for transmitting data between a spacecraft and ground control?
a) GPS
b) Ethernet
c) TCP/IP
d) Deep Space Network (DSN)
Answer: d) Deep Space Network (DSN)Which subsystem of a spacecraft is responsible for collecting and transmitting scientific data to Earth?
a) Telecommunications
b) Thermal control
c) Data handling
d) Payload
Answer: d) Payload
What is the primary purpose of a Reaction Wheel Assembly (RWA) on a spacecraft?
a) Generate electrical power
b) Attitude control
c) Propulsion
d) Thermal regulation
Answer: b) Attitude control
Which type of propulsion system is most suitable for long-duration interplanetary missions due to its high specific impulse?
a) Chemical propulsion
b) Ion propulsion
c) Solar sail propulsion
d) Nuclear propulsion
Answer: b) Ion propulsion
What does the term “spacecraft autonomy” refer to?
a) Ability to communicate with ground control
b) Capability to operate without constant human intervention
c) Functionality during re-entry into Earth’s atmosphere
d) Ability to withstand radiation in space
Answer: b) Capability to operate without constant human intervention
Which component of a spacecraft ensures that it remains within its designated orbit?
a) Reaction wheels
b) Star tracker
c) Onboard computer
d) Propellant tanks
Answer: d) Propellant tanks
What is the primary function of a star sensor on a spacecraft?
a) Maintain the spacecraft’s orientation
b) Transmit telemetry data
c) Receive commands from ground control
d) Measure radiation levels
Answer: a) Maintain the spacecraft’s orientation
Which orbit is commonly used for scientific missions requiring close observation of Earth’s surface?
a) Polar orbit
b) Geostationary orbit
c) Low Earth orbit
d) Heliocentric orbit
Answer: a) Polar orbit
What role does a Magnetometer play in spacecraft operations?
a) Measures the spacecraft’s velocity
b) Determines the spacecraft’s orientation using magnetic fields
c) Tracks the spacecraft’s position relative to Earth
d) Monitors solar radiation levels
Answer: b) Determines the spacecraft’s orientation using magnetic fields
Which subsystem of a spacecraft manages the thermal environment to protect sensitive components?
a) Data handling
b) Telecommunications
c) Power management
d) Thermal control
Answer: d) Thermal control
Which organization operates the Deep Space Network (DSN) for communicating with spacecraft throughout the solar system?
a) NASA
b) ESA (European Space Agency)
c) CNSA (China National Space Administration)
d) ISRO (Indian Space Research Organisation)
Answer: a) NASAWhich system on a spacecraft is responsible for executing commands sent from ground control?
a) Attitude control system
b) Power management system
c) Command and data handling system
d) Thermal regulation system
Answer: c) Command and data handling system
What is the primary function of a GPS receiver on a spacecraft?
a) Measure the spacecraft’s speed
b) Determine the spacecraft’s position in space
c) Transmit telemetry data to Earth
d) Monitor radiation levels
Answer: b) Determine the spacecraft’s position in space
Which component of a spacecraft is critical for maintaining communication with ground control and other spacecraft?
a) Star tracker
b) Antenna
c) Reaction wheel
d) Solar panel
Answer: b) Antenna
What is the purpose of a deployable solar array on a spacecraft?
a) Attitude control
b) Thermal regulation
c) Power generation
d) Data storage
Answer: c) Power generation
Which type of propulsion system is most suitable for making small adjustments to a spacecraft’s trajectory during missions?
a) Chemical propulsion
b) Electric propulsion
c) Nuclear propulsion
d) Solar sail propulsion
Answer: b) Electric propulsion
What role does a Magnetorquer play in spacecraft operations?
a) Generates electrical power
b) Provides thermal control
c) Controls spacecraft orientation using magnetic fields
d) Enhances communication range
Answer: c) Controls spacecraft orientation using magnetic fields
Which subsystem of a spacecraft is responsible for managing the transfer of data between different onboard systems?
a) Telecommunications
b) Power distribution
c) Data handling
d) Thermal control
Answer: c) Data handling
What is the primary purpose of a propulsion system on a spacecraft?
a) Generate electrical power
b) Maintain thermal stability
c) Control attitude
d) Change orbital trajectory
Answer: d) Change orbital trajectory
Which orbit is commonly used for satellite constellations to provide global coverage?
a) Geostationary orbit
b) Polar orbit
c) Low Earth orbit
d) Medium Earth orbit
Answer: a) Geostationary orbit
What is the function of a Reaction Control System (RCS) on a spacecraft?
a) Generate electrical power
b) Regulate internal temperature
c) Provide propulsion for precise maneuvers
d) Monitor atmospheric conditions
Answer: c) Provide propulsion for precise maneuversWhich component of a spacecraft is responsible for storing the onboard software programs and executing commands?
a) Telemetry system
b) Antenna
c) Command and data handling system
d) Reaction wheel
Answer: c) Command and data handling system
What is the primary function of a star tracker on a spacecraft?
a) Measure the spacecraft’s velocity
b) Determine the spacecraft’s position relative to Earth
c) Monitor radiation levels
d) Maintain the spacecraft’s orientation using star positions
Answer: d) Maintain the spacecraft’s orientation using star positions
Which communication protocol is commonly used for transmitting data between a spacecraft and ground control stations?
a) Ethernet
b) TCP/IP
c) Deep Space Network (DSN)
d) Satellite Communication Network (SCN)
Answer: c) Deep Space Network (DSN)
What role does a Magnetometer play in spacecraft operations?
a) Measures the spacecraft’s velocity
b) Determines the spacecraft’s orientation using magnetic fields
c) Tracks the spacecraft’s position relative to Earth
d) Monitors solar radiation levels
Answer: b) Determines the spacecraft’s orientation using magnetic fields
Which subsystem of a spacecraft is responsible for managing the thermal environment to protect sensitive components?
a) Data handling
b) Telecommunications
c) Power management
d) Thermal control
Answer: d) Thermal control
What is the primary function of a GPS receiver on a spacecraft?
a) Measure the spacecraft’s speed
b) Determine the spacecraft’s position in space
c) Transmit telemetry data to Earth
d) Monitor radiation levels
Answer: b) Determine the spacecraft’s position in space
Which type of propulsion system is most suitable for making small adjustments to a spacecraft’s trajectory during missions?
a) Chemical propulsion
b) Electric propulsion
c) Nuclear propulsion
d) Solar sail propulsion
Answer: b) Electric propulsion
What role does a Magnetorquer play in spacecraft operations?
a) Generates electrical power
b) Provides thermal control
c) Controls spacecraft orientation using magnetic fields
d) Enhances communication range
Answer: c) Controls spacecraft orientation using magnetic fields
Which subsystem of a spacecraft is responsible for managing the transfer of data between different onboard systems?
a) Telecommunications
b) Power distribution
c) Data handling
d) Thermal control
Answer: c) Data handling
What is the primary purpose of a propulsion system on a spacecraft?
a) Generate electrical power
b) Maintain thermal stability
c) Control attitude
d) Change orbital trajectory
Answer: d) Change orbital trajectory
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