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Nozzles and Turbines

The safety valve at superheater as compared to drum safety valve setting is set at___________________?

August 16, 2021January 30, 2019 by admin
The safety valve at superheater as compared to drum safety valve setting is set at___________________?

A. higher value
B. lower value
C. same value
D. any value
E. none of the above

Categories Engines, Nozzles and Turbines, Steam Boilers

The pressure of reheat steam after passing through reheater compared to inlet condition is _________________?

August 16, 2021January 30, 2019 by admin
The pressure of reheat steam after passing through reheater compared to inlet condition is _________________?

A. more
B. less
C. equal
D. may be more or less depending on capacity of reheater
E. none of the above

Categories Engines, Nozzles and Turbines, Steam Boilers

In regenerative air preheater, the heat is transferred _____________________?

August 16, 2021January 30, 2019 by admin
In regenerative air preheater, the heat is transferred _____________________?

A. from a metal wall from one medium to another
B. from heating an intermediateanaterial and then heating the air from this material
C. by direct mixing
D. heat is transferred by bleeding some gas from furnace
E. none of the above

Categories Engines, Nozzles and Turbines, Steam Boilers

A safety valve in a locomotive starts leaking. The leaking medium will be_________________?

August 16, 2021January 30, 2019 by admin
A safety valve in a locomotive starts leaking. The leaking medium will be_________________?

A. water
B. dry steam
C. wet steam
D. super heated steam
E. supersaturated steam

Categories Engines, Nozzles and Turbines, Steam Boilers

The diameter of fire tubes in Cochran boiler is of the order of___________________?

August 16, 2021January 30, 2019 by admin
The diameter of fire tubes in Cochran boiler is of the order of___________________?

A. 2 cm
B. 6 Cm ,
C. 8 cm
D. 12 cm
E. 15 cm

Categories Engines, Nozzles and Turbines, Steam Boilers

With increase in load, radiant super heater has____________________?

August 16, 2021January 30, 2019 by admin
With increase in load, radiant super heater has____________________?

A. droog characteristic
B. lihear characterisstic
C. rising characteristic
D. flat characteristic
E. none of the above

Categories Engines, Nozzles and Turbines, Steam Boilers

The major axis of elliptical manholes on the shell should be provided___________________?

August 16, 2021January 30, 2019 by admin
The major axis of elliptical manholes on the shell should be provided___________________?

A. longitudinally
B. circumferentially
C. on dished end
D. anywhere
E. vertically

Categories Engines, Nozzles and Turbines, Steam Boilers

Size of boiler tubes is specified by___________________?

August 16, 2021January 30, 2019 by admin
Size of boiler tubes is specified by___________________?

A. mean diameter and thickness
B. inside diameter and thickness
C. outside diameter and thickness
D. outside diameter and inside diameter
E. outside diameter alone

Categories Engines, Nozzles and Turbines, Steam Boilers

Boiler stays are used to___________________?

August 16, 2021January 30, 2019 by admin
Boiler stays are used to___________________?

A. prevent flat surfaces under pressure from tearing apart
B. take care of failure in shear
C. take care of failure in compression
D. provide support for boiler
E. provide foundation of boiler

Categories Engines, Nozzles and Turbines, Steam Boilers

Which type of boiler can meet rapid changes of load____________________?

August 16, 2021January 30, 2019 by admin
Which type of boiler can meet rapid changes of load____________________?

A. vertical fire tube type
B. horizontal fire tube type
C. horizontal water tube type
D. vertical water tube type
E. forced circulation type

Categories Engines, Nozzles and Turbines, Steam Boilers
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