Mechanical Engineering Questions and Answers
Challenge your knowledge of machinery, prepare for your exams or aptitude tests with these Mechanical Engineering questions and answers.
Challenge your knowledge of machinery, prepare for your exams or aptitude tests with these Mechanical Engineering questions and answers.
The compression ratio in petrol engine is kept less than in Diesel engine because
it makes petrol engines lighter
higher or equivalent compression ratio in petrol engines is not possible due to pre-ignition
less compression ratio gives better performance
it is just customary to have less compression ratio in petrol engines
Correct answer is B
No explanation has been provided for this answer.
The main function of the tread pattern on tyre is that
the tread grooves pass air between the tyre and road surface, thereby preventing tyre from overheating
the crests between the tread grooves absorb road noise
in wet conditions, the tread grooves expel water that is drawn between the tyre and road surface
the tread pattern protects the tyre's inner carcass from small stones and pieces of glass
Correct answer is C
No explanation has been provided for this answer.
The aluminium alloy is used in cylinder blocks because
it is lighter and have good heat dissipation characteristics
material cost is low
it does not require any cylinder liners
the piston is also made of aluminium alloy
Correct answer is A
No explanation has been provided for this answer.
The operation of removing trapped air from the hydraulic braking system is known as
trapping
tapping
bleeding
cleaning
Correct answer is C
No explanation has been provided for this answer.
The battery is an electrochemical device, which means battery
makes chemicals by mechanical means
uses chemical action to provide electricity
has curved plates instead of flat plates
does not use an electrolyte
Correct answer is B
No explanation has been provided for this answer.
The difference between DOT 3 and DOT 4 brake fluids is
DOT 4 fluid has a higher boiling point than DOT 3 fluid
DOT 4 fluid has a lower boiling point than DOT 3 fluid
DOT 3 and DOT 4 fluids have the same boiling point, but DOT 4 fluid has a longer service life
DOT 4 fluid is more resistant to freezing than DOT 3 fluid
Correct answer is A
No explanation has been provided for this answer.
The information provided by the oxygen (O2) sensor to the feedback control system is about the
air-fuel ratio
air temperature
air flow speed
exhaust gas volume
Correct answer is A
No explanation has been provided for this answer.
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