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Rocket propellant



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Q1. Reaction control systems produce larger thrust than auxiliary propulsion systems.

(a) True
(b) False
(c) -
(d) -

Q2. Rocket engines used for orbital adjustments are also called as _____________

(a) boost propulsion system
(b) primary propulsion system
(c) auxiliary rockets
(d) strap-on motors

Q3. What is the nature of thrusters and feed system for attitude control rocket engines?

(a) small; common pressurized feed system
(b) large; separate turbopump feed system
(c) small; separate pressurized feed system
(d) large; common turbopump feed system

Q4. Knocking in spark-ignition internal combustion engines is not the same as ____________

(a) detonation
(b) pinging
(c) pinking
(d) pre-ignition

Q5. ____________ is not a metallic additive in rocket propellants.

(a) Beryllium
(b) Aluminum
(c) Nitroglycerine
(d) Boron

Q6. 1-methyl-1, 2-dicyclopropyl cyclopropane is also called as ____________

(a) Syntin
(b) Kerosene
(c) RP-1
(d) Jet fuel

Q7. The fuel which releases the most energy per unit mass of combustion is ____________

(a) LH2
(b) RP-1
(c) Kerosene
(d) Methane

Q8. Which of the following fuels were used in the first stage of Titan I?

(a) RP-1
(b) RDX
(c) HMX
(d) LH2

Q9. Which of the following is a highly refined form of kerosene used as rocket fuel?

(a) RP-1
(b) HMX
(c) RDX
(d) C-4

Q10. Dissociation of the reaction products __________ with the rise in the chamber temperature and _________ with the rise in chamber pressure of a chemical rocket engine.

(a) increases, increases
(b) decreases, increases
(c) decreases, decreases
(d) increases, decreases