Mechanical Engineering MCQs

Page No. 13

Cochran boiler is a__________________?


ahorizontal fire-tube boiler

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bhorizontal water-tube boiler

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cveritcal water-tube boiler

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dvertical fire tube boiler

✓



Orsat meter is used for__________________?


agravimetric analysis of the flue gases

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bvolumetric analysis of the flue gases

✓


cmass flow of the flue gases

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dmeasuring smoke density of flue gases

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An ideal regenerative cycle is ______________________?


aequal to carnot cycle

✖


bless than carnot cycle

✓


cmore than carnot cycle

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dcould be anything

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Lancashire ‘boiler is a__________________?


astationary fire tube boiler

✓


bstationary water tube boiler

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cwater tube boiler with natural/forced circulation

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dmobile fire tube boiler

✖



One kilowatt-hour energy is equivalent to ________________?


a1000 J

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b360 kJ

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c3600 kJ

✓


d3600 kW/sec

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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

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dnon-availability of ideal substance

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


aone half

✓


bone third

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cone-fifth

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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.

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cwork done during adiabatic expansion

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dchange in enthalpy

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Locomotive type’ boiler is__________________?


ahorizontal multitubular water tube boiler

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bwater wall enclosed furnace type

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cvertical tubular fire tube type

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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

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dtubes are laid vertically

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