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Ratio of chemical A and B in boiler Y is 3 : 2 and Boiler X has ratio of chemical A to chemical B as 1 : 7, 16 litres of mixture is removed transferred from boiler X to boiler Y. What is the total capacity of boiler Y if capacity of boiler X is 144 litres and difference between chemical A and B in boiler Y after transfer is 25 litres? Assume that after transferring 16 litres from boiler X, boiler Y is running at full capacity
Rekha, Hema and Kajal bought the same washing machine at the same MRP from 3 different dealers. All the dealers offered 2 discounts and subsequent cash backs after discount. Rekha got discounts of 5 percent and cashback of 20 percent, Hema got 16 percent discount and cashback of 15 percent, Kajal got 15 percent discount and cashback of 12 percent. Find out who purchased the machine at maximum price? 
Water (CP = 4 kJ/kg K) is fed to a boiler at 30°C, the enthalpy of vaporization at atmospheric pressure in the boiler is 2400 kJ/kg; the steam coming from the boiler is 0.9 dry. What is the net heat supplied in the boiler?
Second law efficiency is defined as the ratio of actual thermal efficiency to the maximum possible thermal efficiency.
Minimum thermal efficiency of a steam boiler may be around __________ percent
Read the following passage and answer the item that follows. Your answers to this item should be based on the passage only. In the last two decades, the world's gross domestic product (GDP) has increased by 50 percent, whereas inclusive wealth has increased by a mere 3 percent. In recent decades, GDP-driven economic performance has only harmed inclusive wealth like human capital; and natural capital like forests, land and water. While the world's human capital which stands at 57 percent of total inclusive wealth grew by only 8 percent, the natural capital which is 23 percent of total inclusive wealth declined by 30 percent worldwide in the last two decades. Which of the following is the most crucial inference from the above passage?
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?
In a vertical thermosyphon re-boiler, it is due to the __________ difference that the circulation in the liquid occurs, between vapour-liquid mixture from the re-boiler and the liquid through the down-comer to the re-boiler.
In the question below, are given a statement followed by three courses of actions numbered I, II and III. On the basis of the information given, you have to assume everything in the statement to be true, and then decide which of the following suggested courses of actions logically follow(s) for pursuing. Statement: High-sulphur fuel oil (HSFO), essentially the leftovers of an oil refiner's output, will still flow from refineries around the world even after new rules start up in 2020 curtailing its use in the global shipping fleet.Sixty percent of the 33 refineries in a global survey will still produce HSFO in 2020 although the supply will tighten as 70 percent of these refiners plan to reduce their output.  Courses of action: I. Starting that year, ships will use marine fuel, which primarily consists of residual fuel oil, with a maximum sulphur content of 0.5 percent under International Maritime Organization (IMO) rules to reduce air pollution.  II. Currently, the global shipping fleet, which includes oil and chemical tankers as well as container ships, uses as much as 3.3 million barrels per day of HSFO with a maximum of 3.5 percent sulphur.  III. Refiners will have little incentive to produce HSFO after the regulations though some demand will remain as a small but growing number of vessels are fitted with smokestack scrubbers that remove the sulphur from the exhaust fumes and power plants will continue to consume the fuel. 
Which of the following statement(s) are true with respect to the concept of ‘EFFICIENCY’ as used in mainstream economics? 1. Efficiency occurs when no possible organization of production can make anyone better off without making someone else worse off. 2. An economy is clearly inefficient if it is inside the Production Possibility Frontier (PPF). 3. At a minimum, an efficient economy is on its Production Possibility Frontier (PPF). 4. The terms such as ‘Pareto Efficiency’, ‘Pareto Optimality’ and ‘Allocative Efficiency’ are all essentially one and the same which denote ‘efficiency in resource allocation’. Select the correct answer using the code given below: