Related Questions

The ratio of the work-done on the blades per kg of steam to the total energy supplied per stage per kg of steam is called
A Blading efficiency
B Nozzle efficiency
C Stage efficiency
D Mechanical efficiency
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
In recent times, the “dynamic brake system” is becoming popular in modern railways. The dynamic brake system coverts Kinetic energy to________:
A Potential energy
B Electricity
C Sound energy
D Magnetic energy
Air is to be heated by condensing steam. Two heat exchangers are available (i) a shell and tube heat exchanger and (ii) a finned tube heat exchanger. Tube side heat transfer area are equal in both the cases. The recommended arrangement is
A Finned tube heat exchanger with air inside and steam outside
B Finned tube heat exchanger with air outside and steam inside
C Shell and tube heat exchanger with air inside tubes and steam on shell side
D Shell and tube heat exchanger with air on shell side and steam inside tubes
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 ratio of the indicated power to the shaft power or brake power of the motor or engine required to drive the compressor, is called
A Compressor efficiency
B Volumetric efficiency
C Isothermal efficiency
D Mechanical efficiency
The ratio of brake power to the indicated power is known as
A Mechanical efficiency
B Overall efficiency
C Indicated thermal efficiency
D Brake thermal efficiency
The sequence in which the force is transmitted through a brake system when the brake pedal is depressed is
A Brake pedal, Master cylinder, Brake lines, Vacuum servo mechanism, Brake pads
B Brake pedal, Vacuum servo mechanism, Master cylinder, Brake lines, Brake pads
C Brake pedal, Master cylinder, Vacuum servo mechanism, Brake lines, Brake pads
D Brake pedal, Brake lines, Vacuum servo mechanism, Master cylinder, Brake pads
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
An aqueous solution of methanol is to be distilled in a tray column. High pressure steam is available as a source of heat. For a given reflux ratio and overhead composition, two options are being explored; (i) a reboiler is used and (ii) no reboiler is used but steam is fed directly to the bottom of the column. As compared to option (i), in option (ii)
A Less number of trays are required
B Composition of the residue remains unchanged
C More number of trays are required but the residue composition remains unchanged
D More number of trays are required and the residue composition is more dilute in methanol

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