Related Questions

When the speed of the engine is controlled by means of a valve in a steam pipe, which regulates the pressure of steam entering the engine, then the governing is known as
A Throttle governing
B Cut-off governing
C By-pass governing
D None of these
Cut-off governing as compared to throttle governing is
A Less efficient and less economical
B Less efficient and more economical
C More efficient and less economical
D More efficient and more economical
Which of the following statement is correct for steam turbines as compared to reciprocating steam engines?
A A steam turbine develops higher speeds
B The efficiency of steam turbine is higher
C The steam consumption is less
D All of these
Steam turbines commonly used in steam power station are
A condensing type
B non-condensing type
C both (A) and (B)
D none of the above
Vacuum for reciprocating steam engines compared to steam turbines is
A More
B Equal
C Less
D Could be more or less depending on the size of plant
In impulse turbines, when friction is neglected, the relative velocity of steam at outlet tip of the blade is _________ the relative velocity of steam at inlet tip of the blade.
A Equal to
B Less than
C Greater than
D None of these
In a steam engine, superheated steam from the boiler is fed into the steam chest at a pressure of
A 10 atmospheres
B 20 atmospheres
C 30 atmospheres
D 40 atmospheres
Steam reforming of naphtha is a source of hydrogen production for nitrogeneous fertiliser industry. What is the usual ratio of steam to carbon maintained in the process of steam reforming of naphtha?
A 1.5:1
B 3.5:1
C 10:1
D 15:1
A steam turbine, in which a part of the steam after partial expansion, is used for process heating and the remaining steam is further expanded for power generation, is known as
A Back pressure turbine
B Pass out turbine
C Low pressure turbine
D Impulse turbine
Throttle governing of steam engines is a method of controlling the engine output by varying
A Volume of intake steam
B Pressure of intake steam
C Temperature of intake steam
D All of these

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