88301. One molecule of oxygen is __________ times heavier than the hydrogen atom.
88302. Relation between cp and cv is given by (where cp = Specific heat at constant pressure, cv = Specific heat at constant volume, γ = cp/cv, known as adiabatic index, and R = Gas constant)
88303. The heat and work are mutually convertible. This statement is called __________ law of thermodynamics.
88304. Kerosene is distilled at
88305. The amount of heat obtained by the complete combustion of 1 kg of a fuel when the products of its combustion are cooled down to the temperature of supplied air is called __________ calorific value offuel.
88306. The mass of flue gas per kg of fuel is the ratio of the
88307. Equal volumes of all gases, at the same temperature and pressure, contain equal number of molecules. This statement is called Avogadro's law.
88308. Wood charcoal is produced by heating the wood at 100°C.
88309. The __________ is obtained when carbonisation of coal is carried out at 500° to 700° C.
88310. The bomb calorimeter is used for finding the __________ calorific value of solid and liquid fuels.
88311. The efficiency of the Carnot cycle may be increased by
88312. The atomic mass of sulphur is
88313. A path 1-2-3 is given. A system absorbs 100 kJ as heat and does 60 kJ of work while along the path 1-4-3, it does 20 kJ of work. The heat absorbed during the cycle 1-4-3 is
88314. The atomic mass of an element is the number of times the atom of that element is heavier than the hydrogen atom.
88315. A cycle consisting of two isothermal and two isentropic processes, is known as
88316. The air standard efficiency of an Otto cycle is given by (where r = Compression ratio, and γ = Ratio of specific heats)
88317. In an ideal gas turbine plant, it is assumed that the compression and expansion processes are
88318. When gas is heated at constant pressure, the heat supplied is utilised in
88319. The amount of heat required to raise the temperature of 1 kg of water through one Kelvin is called
88320. When wood is heated with a limited supply of air to a temperature not less than 280°C, the resulting fuel is
88321. The efficiency of Diesel cycle increases with increase in cut-off.
88322. The property of a working substance which increases or decreases as the heat is supplied or removed in a reversible manner, is known as
88323. It is __________ to make an engine working on a Carnot cycle.
88324. The heating of a gas at constant pressure is governed by
88325. Reversed Joule cycle is known as
88326. Which of the following is the extensive property of a thermodynamic system?
88327. It is impossible to transfer heat from a body at a lower temperature to a body at a higher temperature, without the aid of an external source.
88328. One kilowatt is equal to
88329. Second law of thermodynamics defines
88330. Energy can neither be created nor destroyed, but it can be transformed from one form to another. This statement is known as
88331. The value of one bar (in S. I. units) is equal to
88332. Petrol is distilled at
88333. If the carbon content in the bituminous coal is 78 to 81%, it is said to be coking bituminous coal.
88334. The mass of excess air supplied is equal to
88335. When a perfect gas is expanded through an aperture of minute dimensions, the process is known as
88336. Steam coal is a
88337. The kinetic energy per kg molecule of any gas at absolute temperature T is equal to (where Ru = Universal gas constant)
88338. The atomic mass of nitrogen is __________ oxygen.
88339. One kg of sulphur requires 1 kg of oxygen for complete combustion and produces 2 kg of sulphur dioxide.
88340. The change of entropy, when heat is absorbed by the gas, is
88341. A machine which violates the first law of thermodynamics is known as perpetual motion machine of the second kind.
88342. Both the Ericsson and Joule's cycle have two constant pressure processes.
88343. The general law for the expansion or compression of gases, is
88344. The heat energy stored in the gas and used for raising the temperature of the gas is known as
88345. A cycle consisting of two constant pressure and two isentropic processes is known as
88346. When the gas is heated at constant pressure, the heat supplied
88347. The __________ states that change of internal energy of a perfect gas is directly proportional to the change of temperature.
88348. A closed cycle gas turbine works on Joule's cycle.
88349. The workdone in a free expansion process is zero.
88350. When a system changes its state from one equilibrium state to another equilibrium state, then the path of successive states through which the system has passed, is known as
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