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Engineering :: Heat Engines


351.  A barn is a
A. Unit of area B. Unit of time
C. Unit of length D. Unit of mass
E. Unit of momentum    

352.  The steam pressure in a pass out turbine may be expected to be in the range
A. 150 kg/cm2 to 300 kg/cm2 B. 100 kg/cm2 to 150 kg/cm2
C. 75 kg/cm2 to 100 kg/cm2 D. 40 kg/cm2 to 75 kg/cm2
E. 10 kg/cm2 to 20 kg/cm2    

353.  In a reaction turbine which steam flows through the moving blades
A. Pressure increases B. Velocity increases
C. Pressure increases while velocity reduces D. Pressure reduces while velocity increases
E. Both velocity as well as pressure decreases    

354.  In Parsons reaction turbine
A. The degree of reaction is B. The fixed and moving blades are identical
C. The fixed blades are smaller in size as compared to moving blades D. The fixed blades are larger in size compared to fixed blades
E. The velocity biagram is unsymmetrical about a vertical centre line    

355.  The use of Wilson's line for flow calculation is associated with
A. Impulse turbines B. Reaction turbines
C. Diesel engines D. Gas turbines
E. Steam-nozzles    

356.  The ideal output velocity of steam from a nozzle having an enthalpy drop of 100 kcal/kg will be
A. 600 m/s B. 789 m/s
C. 915 m/s D. 1000 m/s
E. 1098 m/s    

357.  In a velocity compounded impulse turbine, while steam flows through the second row of moving blades
A. The pressure remains constant B. The velocity remains constant
C. The velocity reduces D. The velocity increases
E. Both velocity as well as pressure increase    

358.  When a receiver is provided in a compound engine, it can be concluded that
A. The engine is non-condensing type B. The engine is condensing type
C. The cranks are at 90? to each other D. The cranks are at 180? to each other
E. None of the above    

359.  In a throttle governed single cylinder steam engine 5 I.H.P. is developed when steam consumption is 50 kg per hour and 2 I.H.P. is developed when the steam consumption is 26 kg per hour. The steam consumptions when the engine develops 4 I.H.P. will be
A. 46 B. 42 kg
C. 40 kg D. 38 kg
E. 37 kg    

360.  Which of the following is a part of reciprocating steam engine and not a part of steam turbine plant?
A. Condenser B. Governor
C. Pressure gauge D. Cross head
E. All of the above    




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