Related Questions

Reactors designed for propulsion applications are designed for
A Natural uranium
B Enriched uranium
C Pure uranium
D Any type of uranium
A first order reaction is to be treated in a series of two mixed reactors. The total volume of the two reactors is minimum, when the reactors are
A Equal in size
B Of different sizes
C Of such size that the ratio of their volumes is
D None of these
Reactors for propulsion applications use
A Natural uranium
B Molten lead
C Any form of uranium
D Thorium
Where reactor operation is designed with fast neutrons such as in reactors using highly enriched fuel, the moderator used is
A Heavy water
B Graphite
C Carbon dioxide
D No moderator is needed
A similar word to "propulsion" is
A energy
B compulsion
C Tight
D thrust
In a jet propulsion
A The propulsive matter is ejected from within the propelled body
B The propulsive matter is caused to flow around the propelled body
C Its functioning does not depend upon presence of air
D None of the above
The efficiency of jet propulsion for a ship with inlet orifices at right angles to the direction of motion of ship is given by
A $$\frac{{2\left( {{{\text{V}}_{\text{r}}} - {\text{v}}} \right){\text{v}}}}{{{\text{V}}_{\text{r}}^2}}$$
B $$\frac{{2\left( {{{\text{V}}_{\text{r}}} + {\text{v}}} \right){\text{v}}}}{{{\text{V}}_{\text{r}}^2}}$$
C $$\frac{{\left( {{{\text{V}}_{\text{r}}} - {\text{v}}} \right){\text{v}}}}{{{{\text{V}}_{\text{r}}}}}$$
D $$\frac{{\left( {{{\text{V}}_{\text{r}}} + {\text{v}}} \right){\text{v}}}}{{{{\text{V}}_{\text{r}}}}}$$
In a jet propulsion unit, the products of combustion after passing through the gas turbine are discharged into
A Atmosphere
B Vacuum
C Discharge nozzle
D Back to the compressor
In jet propulsion power unit, the inlet duct of diverging shape is used in order to
A Collect more air
B Convert kinetic energy of air into pressure energy
C Provide robust structure
D Beautify the shape
Propulsion efficiency of the following order is obtained in practice
A 34%
B 50%
C 60%
D 72%

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