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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

Which of the following solid fuel has high caloric value : ___________?
A Wood
B Peat
C Bituminous coal
D Anthracite coal
Correct Answer: Anthracite coal
The average calorific value of wood is about : __________?
A 33500 kj/kg
B 25000 kj/kg
C 23000 kj/kg
D 19700 kj/kg
Correct Answer: 19700 kj/kg
The natural solid fuels are : ________?
A Wood
B Peat
C Lignite
D All of above
Correct Answer: All of above
Diesel Cycle is also known as : __________?
A Constant temperature cycle
B Constant Volume cycle
C Constant Pressure Cycle
D All of above
Correct Answer: Constant Pressure Cycle
Pick up false statement?
A For petrol and large gas engines, quantity governingds preferred
B In quantity governing, air fuel ratio is almost constant and quantity of charge is changed depending on load
C In hit and miss governing, fuel supply is completely cut off during one or more number of cycles
D In quality governing, quantity of fuel is varied to suit the load and total charge of air is varied
Correct Answer: In quality governing, quantity of fuel is varied to suit the load and total charge of air is varied
With increase in engine speed, the ignition of spark in petrol engine has to be __________________?
A Unaltered
B Increased
C Decreased
D Advanced
Correct Answer: Advanced
Carburretion is done to________________?
A feed petrol into cylinder
B govern the engine
C break up and mix the petrol with air
D heat up the charge to cylinder
Correct Answer: break up and mix the petrol with air
The theoretically correct mixture of air and petrol is approximately ________________?
A 0.334027778
B 0.500694444
C 0.625694444
D 0.834027778
Correct Answer: 0.625694444
The following type of carburettor is preferred_______________?
A concentric type
B eccentric type
C horizontal type
D vertical type
Correct Answer: concentric type
The part load efficiency of a carburettor is,___________________?
A Maximum
B Optimum
C Poor
D Constant
Correct Answer: Poor
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