GATE ME
Thermodynamics
Rankine Cycle
Previous Years Questions

## Marks 1

The INCORRECT statement about regeneration in vapor power cycle is that
Which of the following statements regarding a Rankine cycle with reheating are TRUE? (i) increase in average temperature of heat addition (ii) reducti...
Consider a steam power plant using a reheat cycle as shown. Steam leaves the boiler and enters the turbine at $$4$$ $$MPa,$$ $${350^ \circ }C$$ $$\lef... Match the following ... The efficiency of superheat Rankine cycle is higher than that of simple Rankine cycle because For a compressible fluid, sonic velocity is The isentropic heat drop in the nozzle of an impulse steam turbine with a nozzle efficiency$$0.9,$$blade velocity ratio$$0.5,$$and mean blade velo... Consider an actual regenerative Rankine cycle with one open feed water heater. For each$$kg$$steam entering the turbine, if$$mkg$$steam with ... The following data pertain to a single stage impulse steam turbine: Nozzle angle$$={20^ \circ };$$Blade velocity$$= 200m/s;$$Relative s... Match the following ... A steam plant has the boiler efficiency of$$92\% $$, turbine efficiency (mechanical) of$$94\% $$, generator efficiency of$$92\% $$and cycle effici... The equivalent evaporation$$(kg/hr)$$of a boiler producing$$2000kg/hr$$of steam with enthalpy content of$$2426kJ/kg$$from feed water a... Boiler rating is usually defined in terms of: In stream and other vapor cycles, the process of removing non-condensables is called Subsonic and supersonic diffusers have the following geometry: A steam turbine operating with less moisture is ____________ (more/less) efficient and ________ (less/more) prone to blade damage. In a Rankine cycle heat is added Velocity compounded steam turbine known as ___________ (Curtis / Rateau ) turbine uses the principle of converting entire __________ (pressure / veloc... In the Rankine cycle when super-heated steam is used: When initially dry and saturated steam flows through a nozzle, the ratio of actual discharge to calculated discharge is The fundamental objective of employing the condenser in a steam power plant is to (reducce / increase ) the ______________of steam A economizer in a steam generator performs the function of ## Marks 5 Stream at$$300kPa$$and$${500^ \circ }C\,\,\left( {h = 3486.0\,\,kJ/kg} \right)$$enters a steam turbine and exits at atmospheric pressure and ... A simple impulse turbine expands steam frictionlessly from$$12$$bar,$${250^0}C$$with an enthalpy of$$2935kJ/kg$$to an enthalpy of$$2584$$... An adiabatic steam turbine receives dry saturated steam at$$1.0\,\,\,MN/{m^2}$$and discharges it$$0.1\,\,\,MN/{m^2}.$$The steam flow rate is$$3$$... A Rankine cycle operates between pressures of$$80$$bar and$$0.1$$bar. The maximum cycle temperature is$${600^ \circ }C.$$If the steam turbine an... Dry saturated steam enters a friction-less adiabatic nozzle with negligible velocity at a temperature of$${300^ \circ }C.$$It is expanded to a press... In a single stage single row impulse turbine, the steam is entering at a velocity of$$1200m/s$$with a nozzle angle of$${20^ \circ }$$and leav... In a steam power plant operating with simple Rankine cycle, the turbine is fed with steam at$$100$$bar and$$673K.$$Determine the actual entha... In a single heater regenerative cycle, steam enters the turbine at$$30$$bar,$${300^0}C$$and condenser pressure is$$0.096$$bar. The feed water he... A power station produces$$500MW$$of power. Assuming a plant thermal efficiency of$$33.3 percent, calculate the rate of cooling water flow re...
The layout of a steam power plant working on the Rankine Cycle with single stage regeneration is shown in figure. Assuming the exit stream from the re...
EXAM MAP
Joint Entrance Examination