Related Questions

The ratio of the workdone on the blades to the energy supplied to the blades, is called
A Blading efficiency
B Nozzle efficiency
C Gross or stage efficiency
D Mechanical efficiency
The ratio of the increase in pressure in rotor blades to total increase in pressure in the stage is called
A Pressure ratio
B Pressure coefficient
C Degree of reaction
D Slip factor
The blades of a centrifugal impeller are said to be curved forward, if the __________ of the motion of impeller blades.
A Inlet tip of a blade curves in a direction opposite to that
B Outlet tip of a blade curves in a direction opposite to that
C Inlet tip of a blade is towards the direction
D Outlet tip of a blade is towards the direction
In an axial flow compressor, the ratio of pressure in the rotor blades to the pressure rise in the compressor in one stage is known as
A Work factor
B Slip factor
C Degree of reaction
D Pressure coefficient
The ratio of heat equivalent to brake power to the energy supplied in steam is known as
A Mechanical efficiency
B Overall efficiency
C Indicated thermal efficiency
D Brake thermal efficiency
For a two stage compressor, if index of compression for higher stage is greater than index of compression for lower stage, then the optimum pressure as compared to ideal case will
A Increase
B Decrease
C Remain unaffected
D Other factors control it
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
The blade friction in the impulse turbine reduces the velocity of steam by __________ while it passes over the blades.
A 10 to 15%
B 15 to 20%
C 20 to 30%
D 30 to 40%
In a reaction turbine, when steam flows through the moving blades,
A Pressure increases while velocity decreases
B Pressure decreases while velocity increases
C Pressure and velocity both decreases
D Pressure and velocity both increases
In a velocity compounded impulse turbine, when steam flows through the second row of moving blades,
A Velocity increases
B Velocity decreases
C Velocity remains constant
D Pressure remains constant

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