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Mechanical Engineering Mcqs 1919 MCQs [All-Courses]

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Mechanical Engineering MCQs prepared for job test and interview preparation, especially for fresh graduates, students, and candidates appearing in competitive exams. These multiple-choice questions cover key topics such as Machine Design, Theory of Machines, Hydraulic Machines, and other important mechanical engineering concepts.

All Topics  1919

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
Correct Answer: lower value
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
Correct Answer: less
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
Correct Answer: from heating an intermediateanaterial and then heating the air from this material
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
Correct Answer: super heated steam
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
Correct Answer: 6 Cm ,
With increase in load, radiant super heater has____________________?
A drooping characteristic
B lihear characterisstic
C rising characteristic
D flat characteristic
Correct Answer: drooping characteristic
The major axis of elliptical manholes on the shell should be provided___________________?
A longitudinally
B circumferentially
C on dished end
D anywhere
Correct Answer: circumferentially
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
Correct Answer: outside diameter and thickness
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
Correct Answer: prevent flat surfaces under pressure from tearing apart
It is required to produce large amount of steam at low pressure. Which boiler should be used ?
A pulverised fuel fired boiler
B cochran boiler
C lancashire boiler
D babcock and wilcox boiler
Correct Answer: lancashire boiler
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