Welcome to the Spacecraft Propulsion MCQs with Answers. In this post, we are sharing Spacecraft Propulsion Multiple Choice Questions and Answers in Astronomy section for various competitive exams in Pakistan. Each question offers a chance to enhance your knowledge regarding Spacecraft Propulsion online MCQs Test.
What is the principle behind rocket propulsion?
a) Action and reaction
b) Magnetic repulsion
c) Gravitational attraction
d) Electromagnetic induction
Which type of propulsion uses the expulsion of high-speed gas to produce thrust?
a) Ion propulsion
b) Chemical propulsion
c) Electric propulsion
d) Solar sails
What is the primary advantage of ion thrusters compared to chemical rockets?
a) Higher thrust
b) Higher efficiency
c) Simpler design
d) Lower cost
Which propulsion method relies on electromagnetic fields to accelerate charged particles?
a) Chemical propulsion
b) Ion propulsion
c) Solar sails
d) Nuclear propulsion
What is the main drawback of using chemical rockets for deep space missions?
a) High fuel consumption
b) Low thrust
c) High cost
d) Limited duration
Which spacecraft propulsion method uses the momentum of photons from the Sun to generate thrust?
a) Ion thrusters
b) Chemical rockets
c) Solar sails
d) Nuclear thermal propulsion
What is the main disadvantage of solar sails?
a) Limited thrust
b) High mass
c) Complexity
d) High cost
Which propulsion system uses a nuclear reactor to heat a propellant and expel it to generate thrust?
a) Nuclear thermal propulsion
b) Ion propulsion
c) Electric propulsion
d) Chemical propulsion
What is the primary benefit of using electric propulsion systems?
a) High thrust
b) High efficiency
c) Simplicity
d) Low cost
Which type of propulsion is commonly used for spacecraft that require high velocities and long-duration missions?
a) Chemical propulsion
b) Electric propulsion
c) Chemical propulsion
d) Solar sails
What is the main component of a chemical rocket engine?
a) Propellant
b) Solar panels
c) Magnetic coils
d) Photovoltaic cells
Which propulsion system generates thrust by expelling ionized gases at high speeds?
a) Solar sails
b) Nuclear thermal propulsion
c) Ion thrusters
d) Chemical rockets
What is a significant challenge of using nuclear propulsion in spacecraft?
a) High energy efficiency
b) High thrust
c) Radiation shielding
d) Low mass
What type of propulsion uses the reaction of a chemical oxidizer and fuel to produce thrust?
a) Ion propulsion
b) Chemical propulsion
c) Electric propulsion
d) Solar sails
Which propulsion system is known for its high specific impulse but low thrust?
a) Chemical rockets
b) Solar sails
c) Ion thrusters
d) Nuclear thermal propulsion
What is the key feature of a solar sail that allows it to generate thrust?
a) Photovoltaic cells
b) Magnetic fields
c) Reflective surfaces
d) Chemical reactions
Which type of propulsion is best suited for short-term, high-thrust applications?
a) Electric propulsion
b) Chemical propulsion
c) Solar sails
d) Ion thrusters
What do we call the system that uses a reaction wheel to control spacecraft orientation?
a) Attitude control system
b) Propulsion system
c) Thermal control system
d) Communication system
Which type of thruster uses xenon gas as propellant?
a) Chemical rocket
b) Ion thruster
c) Nuclear thermal rocket
d) Solar sail
What is the primary advantage of using a solar sail for propulsion?
a) Low thrust
b) Simple design
c) No need for propellant
d) High thrust
Which propulsion system involves expelling mass to generate thrust based on Newton’s Third Law?
a) Ion propulsion
b) Chemical propulsion
c) Electric propulsion
d) All of the above
What is the major drawback of using chemical rockets in space travel?
a) Low efficiency
b) High thrust
c) Low specific impulse
d) High cost
Which propulsion method utilizes an electric field to accelerate ions?
a) Ion thrusters
b) Chemical rockets
c) Nuclear thermal propulsion
d) Solar sails
What is the primary role of a spacecraft’s reaction control system?
a) Generate thrust for propulsion
b) Control spacecraft orientation
c) Manage thermal conditions
d) Communicate with Earth
Which type of propulsion system would you use for a deep space mission requiring high efficiency?
a) Chemical rockets
b) Electric propulsion
c) Solar sails
d) Nuclear thermal propulsion
What is the typical propellant used in traditional chemical rockets?
a) Hydrogen and oxygen
b) Xenon
c) Nitrogen
d) Helium
Which propulsion method uses radioactive decay to generate heat for thrust?
a) Chemical propulsion
b) Ion propulsion
c) Nuclear thermal propulsion
d) Solar sails
What does the term “specific impulse” refer to in spacecraft propulsion?
a) Thrust per unit of mass flow rate
b) Energy per unit of propellant
c) Thrust per unit of fuel volume
d) Speed of exhaust particles
Which propulsion system is generally used for station-keeping and fine maneuvering of satellites?
a) Chemical propulsion
b) Solar sails
c) Ion thrusters
d) Nuclear thermal propulsion
What is the primary limitation of solar sails for interstellar missions?
a) High thrust
b) High cost
c) Limited thrust
d) Complexity
Which type of propulsion system is characterized by its use of high-energy electric fields to accelerate ions?
a) Chemical rockets
b) Ion thrusters
c) Solar sails
d) Nuclear thermal propulsion
What is a key advantage of using nuclear thermal propulsion over chemical rockets?
a) Higher efficiency
b) Higher thrust
c) Lower cost
d) Simplicity
Which spacecraft propulsion method uses the sun’s radiation pressure for propulsion?
a) Chemical rockets
b) Solar sails
c) Ion thrusters
d) Nuclear propulsion
What is the purpose of a spacecraft’s main engine?
a) To control orientation
b) To generate thrust
c) To manage thermal conditions
d) To communicate with Earth
Which propulsion system relies on the expulsion of high-velocity gas to produce thrust?
a) Chemical rockets
b) Solar sails
c) Ion thrusters
d) Electric propulsion
Which type of propulsion system uses magnetic fields to create thrust?
a) Ion propulsion
b) Electric propulsion
c) Nuclear propulsion
d) Chemical rockets
What is the primary drawback of using electric propulsion for spacecraft?
a) Low specific impulse
b) High thrust
c) Complexity
d) Low efficiency
Which propulsion system is known for its high energy efficiency and low thrust?
a) Solar sails
b) Chemical rockets
c) Nuclear thermal propulsion
d) Ion thrusters
Which spacecraft propulsion system involves the use of photovoltaic cells to generate electrical power?
a) Chemical rockets
b) Solar sails
c) Ion thrusters
d) Electric propulsion
What kind of propulsion system would you use for a short-duration, high-thrust mission?
a) Solar sails
b) Ion thrusters
c) Chemical rockets
d) Electric propulsion
Which of the following propulsion methods is least affected by the spacecraft’s weight?
a) Chemical propulsion
b) Ion propulsion
c) Solar sails
d) Nuclear thermal propulsion
Which propulsion system involves using an onboard reactor to produce thrust?
a) Ion propulsion
b) Nuclear thermal propulsion
c) Solar sails
d) Chemical rockets
What is a common use of reaction control thrusters on spacecraft?
a) Primary propulsion
b) Attitude control
c) Power generation
d) Communication
Which propulsion system can provide continuous thrust for long-duration missions with low fuel consumption?
a) Chemical rockets
b) Solar sails
c) Ion thrusters
d) Nuclear thermal propulsion
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