Related Questions

A jet of water is striking at the centre of a curved vane moving with a uniform velocity in the direction of jet. For the maximum efficiency, the vane velocity is ________ of the jet velocity
A One-half
B One-third
C Two-third
D Three-fourth
The force exerted by a jet of water impinging normally on a plate which due to the impact of jet, moves in the direction of jet with a velocity v is
A $$\frac{{{\text{wa}}\left( {{\text{V}} - {\text{v}}} \right)}}{{2{\text{g}}}}$$
B $$\frac{{{\text{wa}}\left( {{\text{V}} - {\text{v}}} \right)}}{{\text{g}}}$$
C $$\frac{{{\text{wa}}{{\left( {{\text{V}} - {\text{v}}} \right)}^2}}}{{2{\text{g}}}}$$
D $$\frac{{{\text{wa}}{{\left( {{\text{V}} - {\text{v}}} \right)}^2}}}{{\text{g}}}$$
In air breathing jet engine, the jet is formed by expanding
A Highly heated atmospheric air
B Solids
C Liquid
D Plasma
Air-fuel ratio in a jet engine will be of the order of
A 10 : 1
B 15 : 1
C 20 : 1
D 60 : 1
In a jet engine, the air-fuel ratio is
A 30 : 1
B 40 : 1
C 50 : 1
D 60 : 1
Which of the following property defines the alignment of Ruby text as defined by a tag, in relation to base text defined by a tag?
A ruby-align
B ruby-text
C ruby
D none of the mentioned
Who invented Jet Engine?
A Sir Frank Whittle
B Gottlieb Daimler
C Roger Bacon
D Lewis E Waterman
Which one of the following statements with regard to Jet stream, an upper level tropospheric wave, is not correct?
A It is narrow band of high-velocity wind.
B It\ \follows\ \the\ \wave\ \path\ \near\ \the tropopause at elevations of 8 km to 15 km.
C Jet\ streams\ are typically\ continuous over long distances.
D In summer, the polar front jet achieves its maximum force.
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
In jet engines, for the efficient production of large power, fuel is burnt in an atmosphere of
A Vacuum
B Atmospheric air
C Compressed air
D Oxygen alone

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