Mechanical Engineering MCQs

Page No. 13

Cochran boiler is a__________________?


ahorizontal fire-tube boiler


bhorizontal water-tube boiler


cveritcal water-tube boiler


dvertical fire tube boiler



Orsat meter is used for__________________?


agravimetric analysis of the flue gases


bvolumetric analysis of the flue gases


cmass flow of the flue gases


dmeasuring smoke density of flue gases



An ideal regenerative cycle is ______________________?


aequal to carnot cycle


bless than carnot cycle


cmore than carnot cycle


dcould be anything



Lancashire ‘boiler is a__________________?


astationary fire tube boiler


bstationary water tube boiler


cwater tube boiler with natural/forced circulation


dmobile fire tube boiler



One kilowatt-hour energy is equivalent to ________________?


a1000 J


b360 kJ


c3600 kJ


d3600 kW/sec


View Answer 3600 kJ

100% efficiency of a thermal cycle cannot be achieved because of __________________?


africtional losses


bit is not possible to achieve 0°K temperature


cleakage


dnon-availability of ideal substance



The diameter of fire tube of Cornish boiler compared to its shell is__________________?


aone half


bone third


cone-fifth


dtwo-fifth


View Answer one half

The change in internal energy in steam engines equals to__________________?


awork done during the rankine cycle ;


bwork done during compression.


cwork done during adiabatic expansion


dchange in enthalpy



Locomotive type’ boiler is__________________?


ahorizontal multitubular water tube boiler


bwater wall enclosed furnace type


cvertical tubular fire tube type


dhorizontal multi-tubular fire tube type



Fire tube boilers are those in which__________________?


aflue gases pass through tubes and water around it


bwater passes through the tubes and flue gases around it


cforced circulation takes place


dtubes are laid vertically



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