Consider the following statements:1. The air standard efficiency of an Otto cycle is a function of the properties of the working substance (gas)2. For the same compression ratio and same input, the thermal efficiency of an Otto cycle is more than that of a Diesel cycle3. Thermal efficiency of a Diesel cycle increases with decrease of cut-off ratioWhich of the above statements are correct?

Consider the following statements:1. The air standard efficiency of an

1.	Consider the following statements:1. The air standard efficiency of an Otto cycle is a function of the properties of the working substance (gas)2. For the same compression ratio and same input, the thermal efficiency of an Otto cycle is more than that of a Diesel cycle3. Thermal efficiency of a Diesel cycle increases with decrease of cut-off ratioWhich of the above statements are correct?
A.	1 and 2 only
B.	1 and 3 only
C.	2 and 3 only
D.	1, 2 and 3
Answer» E.

Discussion

No Comment Found

Related MCQs

In an Otto cycle, air is compressed from 2.2 l to 0.26 l from an initial pressure of 1.2 kg/cm2. The net output/cycle is 440 kJ. What is the mean effective pressure of the cycle?
A four-cylinder four-stroke SI engine develops an output of 44 kW. If the pumping work is 5% of the indicated work and mechanical loss is an additional 7%, then the power consumed in pumping work is:
During an experiment on a 4-stroke SI engine, it was observed that the maximum and minimum pressure inside the cylinder during each working cycle was 5 bar and 200 bar respectively. If the compression ratio was 8, then the mean effective pressure is approximately:
A transmission dynamometer measures
A reversible heat engine, operation on Carnot cycle, between the temperature limits of 300 K and 1000 K produces 14 kW of power. If the calorific value of the fuel is 40,000 kJ/kg. The fuel consumption will be:
A spark ignition engine has a compression ratio of 8 and the volume before compression is 0.9 m3/kg. Net heat interaction per cycle is 1575 kJ/kg. What is the mean effective pressure?
A fictitious pressure that, if it acted on the piston during the entire power stroke, would produce the same amount of net work as that produced during the actual cycle is called
A diesel engine develops a Brake power of 4.5 kW. Its indicated thermal efficiency is 30% and the mechanical efficiency is 85%. Considering calorific value of the fuel as 40000 kJ/kg, the fuel consumption will be
Consider the following statements regarding C.I. engine:1. C.I. engines are more bulky than S.I. engines2. C.I. engines are more efficient than S.I. engines3. Lighter flywheels are required in C.I. enginesWhich of the above statements are correct?
Diesel engine having brake thermal efficiency of 30% and the calorific value of fuel used is 10000 kcal/kg, the brake specific fuel consumption will be

Discussion

No Comment Found

Related MCQs

Reply to Comment