IC Engines and Nuclear Power Plants Questions

• The running cost of a petrol engine is __________ than that of a diesel engine.
• The mechanical efficiency (ηm) of the engine is given by
• A higher compression ratio causes
• The injector nozzle of a compression ignition engine is required to inject fuel at a sufficiently high pressure in order to
• In a two stroke engine, the working cycle is completed in two revolutions of the crankshaft.
• The mean effective pressure of a diesel engine having fixed compression ratio will __________ if cut off ratio decreases.
• In a petrol engine, the mixture has the lowest pressure at the
• Which one of the following event would reduce volumetric efficiency of a vertical compression ignition engine?
• The indicated mean effective pressure of an engine is obtained from the indicator diagram drawn with the help of an engine indicator.
• The correct sequence of the decreasing order of brake thermal efficiency of the three given basic types of engines is
• A fuel will detonate less if it has higher self ignition temperature.
• In order to eliminate knocking in compression ignition engines, there should be
• The size of a reactor at which the chain reaction can be initiated (i.e. when system becomes critical) with just enough fissionable material (called critical mass of fuel) is known as critical size of reactor.
• Which of the following statement is correct?
• The two reference fuels used for cetane rating are
• Number of working strokes per min. for a four stroke cycle engine are __________ the speed of the engine in r.p.m.
• The indicated power for multi-cylinder engine will be same as that of a single cylinder engine.
• If the speed of the engine is increased, the indicated power will
• The petrol engines are also known as __________ engines.
• A fuel of cetane number 40 has the same ignition quality as a mixture of