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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 cycle 3. Thermal efficiency of a Diesel cycle increases with decrease of cut-off ratio Which of the above statements are correct?
Study the following table:   June 2007 December 2014 Price of petrol in Rs/litre 47.74 61.33 Price of diesel in Rs/litre 35.21 50.51   After studying the above table, Devmeet a class V student wrote the following in his notebook: A. Petrol is more expensive fuel than diesel. B. The percentage increase in the price of diesel is more than that of petrol. C. Diesel is cheaper and that is why public transport runs on it. D. Diesel is cheaper fuel than petrol. People should buy diesel vehicles. Which one of the following is correct?
The thermal efficiency of a diesel cycle having fixed compression ratio, with increase in cut-off ratio will
The thermal efficiency of a diesel cycle having fixed compression ratio, with increase in cut-off ratio will ___________
The thermal efficiency of an air standard diesel cycle having fixed compression ratio, with increase in cut-off will:
Otto cycle efficiency is higher than Diesel cycle efficiency for the same compression ratio and heat input because in Otto cycle ____________
Otto cycle efficiency is higher than Diesel cycle efficiency for the same compression ratio and heat input because in Otto cycle
Seven people A, B, C, D, E, F and G live on separate floors of a 7-floor building. Ground floor is numbered 1, first floor is numbered. 2 and so on until the topmost floor is numbered 7. Each one of these having a different cars-Cadillac, Ambassador, Fiat, Maruti, Mercedes, Bedford and Fargo but not necessarily in the same order. Only three people live above the floor on which A lives. Only one person lives between A and the one having a car Cadillac. F lives immediately below the one having a car Bedford. The one having a car Bedford lives on an even-numbered floor. Only three people live between the ones having a car Cadillac and Maruti. E lives immediately above C. E is not having a car Maruti. Only two people live between B and the one having a car Fargo. The one having a car Fargo lives below the floor on which B lives. The one having a car Fiat does not live immediately above D or immediately below B. D does not live immediately above or immediately below A. G does not have a car Ambassador. Question : How many people live between the floors on which D and the one having a car Bedford ?
Which of the following statements are correct regarding the Rankine cycle? For a given set of operating pressure limits of a Rankine cycle, superheating the steam beyond the saturation temperature at the boiler pressure will result in: a. an increase in the moisture content of steam leaving the turbine b. an increase in thermal efficiency of the Rankine cycle c. an increase in the mean temperature of heat addition d. a decrease in the amount of heat rejected in the condenser
Find the brake thermal efficiency of an engine having relative efficiency as 65% and the diesel cycle efficiency as 60%.