LAKIREDDY BALIREDDY COLLEGE OF ENGINEERING
DEPARTMENT OF AEROSPACE ENGINEERING
Course: SPACE MECHANICS
Academic Year: 2013-14 B.tech VI Sem
MULTIPLE CHOICE QUESTIONS1. Write 3 laws of Keplers planetary
motion2. Specific potential energy associated with a planet of mass
M is given bya) b) c) d) 3. Specific kinetic energy of an object is
given bya) b) c) d) 4. G is gravitational constant its value is
equal toa) 6.67384*1011 m3/kg.sec2b) 6.67384*1011 m2/kg.sec3c)
6.67384*10-11 m2/kg.sec3d) 6.67384*10-11 m3/kg.sec25. Orbital
period(T) of a body travelling along elliptic orbit is a) b) c) d)
6. Standard gravitational parameter isa) =GMb) =Mmc) =Gmd)
=G+MWhere G is Gravitational ConstantM is Mass of the Planetm is
the mass of the spacecraft7. orbital speed in an elliptical orbit
is given bya) ) b) c) d) where:isorbital speedof orbiting body,is
distance of orbiting body fromcentral body,is length ofsemi-major
axis,isstandard gravitational parameter.8. Hyperbolic excess
velocity () can be computed asa) b) c) d) 9. One light year is the
distance light can travel in one year. At 300,000 km/s, this is
about a) 9.46 109kmb) 9.46 1012mc) 9.46 102kmd) 9.46 1012km10. The
time when the earth is closest to the sun is referred to as ______;
when it is farthest away is called ______a) Aphelion, Perihelionb)
Perihelion, Aphelionc) Apogee, Perigeed) Perigee, Apogee11. How
many v are required for a single elliptical Hohmann transfera) 1b)
2c) 3d) 412. Geostationary Earth Orbit(GEO) is the orbit at an
altitude of ______ following the direction of the Earth's
rotation.a) 22,236mib) 35,786mic) 165,000kmd) 22,236km13. Alow
Earth orbit(LEO) is generally defined as anorbitbelow an altitude
of approximatelya) 2,0000 kilometers b) 1,20000kilometers c) 2,000
kilometers d) 1,25000mi14. Much of the amateur satellite progress
has been spearheaded by a) Radio Amateur Satellite Corporation,
AMSATb) EMEc) Amateur Satellite technology, AMSATd) Amateur
Satellite Corporation, AMSAT15. _____ provides the necessary
gyroscopic stiffness to the satellite by spinning either a part or
the whole of the spacecraft.a) Tidal lockingb) spin stabilizationc)
body stabilized satellite designd) Gravity-gradient
stabilization16. ______ is a method of stabilizingartificial
satellitesorspace tethersin a fixed orientation using only the
orbited body's mass distribution and the Earth's gravitational
field.a) Gravity-gradient stabilizationb) spin stabilizationc) body
stabilized satellite designd) Tidal locking
