Category: Mechanical Engineering Mcqs

In air breathing jet engine, the jet is formed by expanding__________________?

Hamad Compressors, Gas Turbines and Jet Engines 08/05/2020

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A. gases
B. solids
C. liquid
D. plasma
E. highly heated atmospheric air

Engine pistons ‘are usually made of aluminium alloy because it_________________?

Hamad I.C. Engines 07/05/2020

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A. is lighter
B. wears less
C. absorbs shocks
D. is stronger
E. does not react with fuel and lub oil

Transverse fillet welded joints are designed for________________?

Hamad Machine Design 07/05/2020

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A. tensile strength
B. compressive strength
C. shear strength
D. bending strength
E. torsional strength

The efficiency of a Carnot engine depends on_______________________?

Hamad Thermodynamics 07/05/2020

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A. working substance
B. design of engine
C. size of engine
D. type of fuel fired
E. temperatures of source and sink

Bomb calorimeter is used to determine ___________________?

Hamad Steam Boilers, Engines, Nozzles and Turbines 07/05/2020

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A. Higher calorific value at constant volume
B. Lower calorific value at constant volume ,
C. Higher calorific value at constant pressure
D. Lower calorific value at constant pressure
E. None of the above