⚙️Mechanical Engineering MCQs
Mechanical Engineering MCQs
488 MCQs391
The safety valve at superheater as compared to drum safety valve setting is set at___________________?
Ahigher value
Blower value
Csame value
Dany value E. none of the above
392
The pressure of reheat steam after passing through reheater compared to inlet condition is _________________?
Amore
Bless
Cequal
Dmay be more or less depending on capacity of reheater E. none of the above
393
In regenerative air preheater, the heat is transferred _____________________?
Afrom a metal wall from one medium to another
Bfrom heating an intermediateanaterial and then heating the air from this material
Cby direct mixing
Dheat is transferred by bleeding some gas from furnace E. none of the above
394
A safety valve in a locomotive starts leaking. The leaking medium will be_________________?
Awater
Bdry steam
Cwet steam
Dsuper heated steam E. supersaturated steam
395
The diameter of fire tubes in Cochran boiler is of the order of___________________?
A2 cm
B6 Cm ,
C8 cm
D12 cm E. 15 cm
396
With increase in load, radiant super heater has____________________?
Adrooping characteristic
Blihear characterisstic
Crising characteristic
Dflat characteristic E. none of the above
397
The major axis of elliptical manholes on the shell should be provided___________________?
Alongitudinally
Bcircumferentially
Con dished end
Danywhere E. vertically
398
Which device is used in thermal power plants to reduce level of pollution___________________?
Ainduced draft fan
Bsmoke meter
Cchimney
Dprecipitator E. pulveriser
399
The ultimate analysis of fuel lists _____________________?
Avarious chemical constituents, carbon, hydrogen, oxygen etc, plus ash as per-cents by volume
Bvarious chemical constituents, carbon, hydrogen, oxygen, etc, plus ash as per-cents by weight
Cfuel constituents as percents by volume of moisture, volatile, fixed carbon and ash
Dfuel constituents as percents by weight of moisture, volatile, fixed carbon and ash E. moisture and ash free heating value
400
Caking coals are those which __________________________?
Aform lumps or masses of coke
Bburn freely
Cshow little or no fusing action
Dburn completely E. do not form ash