Related Questions

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
The specific speed of a turbine is the speed of an imaginary turbine, identical with the given turbine, which
A Delivers unit discharge under unit head
B Delivers unit discharge under unit speed
C Develops unit power under unit head
D Develops unit power under unit speed
The weight per horse power ratio for gas in Turbine as compared to I.C. engine and steam turbine is
A Same
B Higher
C Lower
D None of these
Gas turbine as compared to steam turbine
A Requires less space for installation
B Has compressor and combustion chamber
C Has less efficiency
D All of these
High pressure steam is expanded adiabati-cally and reversibly through a well insulated turbine, which produces some shaft work. If the enthalpy change and entropy change across the turbine are represented by ΔH and ΔS respectively for this process:
A ΔH = 0 and ΔS = 0
B ΔH ≠ 0 and ΔS = 0
C ΔH ≠ 0 and ΔS ≠ 0
D ΔH = 0 and ΔS ≠ 0
The process of draining steam from the turbine, at certain points during its expansion and using this steam for heating the feed water in feed water heaters and then supplying it to the boiler is known as
A Regenerative heating
B Reheating of steam
C Bleeding
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
which of the following components of reaction turbine increases the head on the turbine by an amount equal to the height of runner outlet above the tail race ?
A Scroll casing
B Guide vanes
C Draft tube
D Moving vanes
Which energy generated in a turbine is used to run electric power generator linked to the turbine shaft?
A mechanic energy
B kinetic energy
C potential energy
D elastic energy

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