88351. The fuel mostly used in blast furnace for extracting pig iron from iron ores is
88352. The ultimate analysis of coal consists of the determination of the percentage of
88353. The change of entropy, when heat is removed from the gas, is positive.
88354. The ratio of root mean square velocity to average velocity of gas molecules at a particular temperature is
88355. First law of thermodynamics deals with
88356. In S. I. units, the value of the universal gas constant is
88357. The throttling process is __________ process.
88358. A cycle consisting of two constant pressure and two isothermal processes is known as Ericsson cycle.
88359. A process of heating crude oil to a high temperature under a very high pressure to increase the yield of lighter distillates, is known as
88360. If in the equation pvn = C, the value of n = 1, then the process is called isothermal process.
88361. The specific volume of a system is an __________ property.
88362. Which of the following process can be made reversible with the help of a regenerator?
88363. The ideal efficiency of simple gas turbine cycle depends upon pressure ratio.
88364. A molecule consisting of one atom is known as
88365. The natural petroleum may be separated into
88366. A definite area or a space where some thermodynamic process takes place is known as
88367. The amount of heat required to raise the temperature of __________ water through one degree is called kilojoule.
88368. The universal gas constant (or molar constant) of a gas is the product of
88369. A process, in which the working substance neither receives nor gives out heat to its surroundings during its expansion or compression, is called
88370. All the commercial liquid fuels are derived from natural petroleum (or crude oil).
88371. A cycle consisting of one constant pressure, one constant volume and two isentropic processes is known as
88372. The efficiency and work ratio of a simple gas turbine cycle are
88373. The amount of heat required to raise the temperature of the unit mass of gas through one degree at constant volume, is called
88374. There is a loss of heat in an irreversible process.
88375. In arc welding, the electric arc is produced between the work and the electrode by
88376. In a centrifugal casting method
88377. The draft or taper allowance on casting is generally
88378. Which of the following welding process uses non-consumable electrodes?
88379. In a bilateral system of tolerance, the tolerance is allowed on
88380. In a hot chamber die casting machine
88381. The chisel used for cutting key ways is
88382. The temperature at which the new grains are formed in the metal is called
88383. Thread rolling is restricted to
88384. In sheet metal blanking, shear is provided on punches and dies so that
88385. In welding copper alloys with TIG arc welding
88386. The algebraic difference between the minimum limit and the basic size is called
88387. The temperature of oxy-hydrogen flame is __________ oxy-acetylene flame.
88388. Which of the following methods can be used for manufacturing 2 metre long seamless metallic tubes?
88389. A saw which cuts wood during the return stroke of the saw is known as
88390. The low pressure acetylene is produced at the welding site by the chemical reaction between water and calcium carbonate.
88391. The fullers are used
88392. The cold chisels are made by
88393. The property of sand due to which it evolves a great amount of steam and other gases is called
88394. The centrifugal casting method, is used for casting articles of
88395. Metal patterns are used for
88396. The instrument which has all the features of try-square, bevel protractor, rule and scriber, is
88397. When a hole or cavity to be cored is not in line with the parting surface, then a __________ is used.
88398. The bloom is smaller than a billet.
88399. In average work, the tolerance produced by investment casting method is
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