Online Mechanical Engineering Test - IC Engines and Nuclear Power Plants Test
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- Total number of questions: 20.
- Time allotted: 30 minutes.
- Each question carries 1 mark; there are no negative marks.
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- All the best!
Marks : 2/20
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Test Review : View answers and explanation for this test.
In a four stroke cycle, the minimum temperature inside the engine cylinder occurs at the
A diesel engine has
The detonation is also called knocking or pinking.
The pre-ignition occurs before the spark is produced whereas detonation develops after the introduction of spark.
The working pressure and temperature inside the cylinder of an internal combustion engine is __________ as compared to a steam engine.
A supercharged engine as compared to an ordinary engine
Supercharging __________ the power developed by the engine.
In qualitative governing, the quantity of fuel is varied to suit the load on the engine and the total charge of air is altered.
If V1 is the jet velocity and V0 is the vehicle velocity, then propulsive efficiency of a turbo-jet engine is
A turbo-jet does not require a turbine to drive the compressor.
The mean effective pressure of a diesel engine having fixed compression ratio will __________ if cut off ratio decreases.
Number of working strokes per min. for a four stroke cycle engine are __________ the speed of the engine in r.p.m.
A gas engine has a swept volume of 300 cm3 and clearance volume of 25 cm3. Its volumetric efficiency is 0.88 and mechanical efficiency is 0.90. The volume of the mixture taken in per stroke is
A two stroke cycle engine gives __________ the number of power strokes as compared to the four stroke cycle engine, at the same engine speed.
The delay period in oil engines increases with increase in the speed of engine.
The ignition quality of petrol is expressed by
A diesel engine has inlet valve, fuel injection valve and exhaust valve.
The octane number of petrol, generally available, is
If the compression ratio in I.C. engine increases, then its thermal efficiency will
The volumetric efficiency ofa well designed engine may be
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