29352. Pick out the correct statement about the condensation.
29353. Change in volume of metals from absolute zero temperature to their melting points is
29354. Wohler test is a destructive test to find out the __________ strength of a prepared metal specimen.
29355. Alloy powder manufactured by the following process have spherical shapes.
29356. The instrument based on the following principle is used for the measurement of oxygen only in the flue gases.
29357. Work study deals with the __________ study.
29358. Maximum change in the hardness of mar tensite occurs in the carbon content range of __________ percent in steel.
29359. Knocking tendency in a petrol engine decreases with increasing
29360. Hooke's law
29361. Which of the following is not an ore of iron ?
29362. Which is the most lethal weapon ?
29363. Reynolds number of a fluid flowing in a circular pipe is 10000. What will be the Reynolds number when the fluid velocity is decreased by 30% & the pipe diameter is increased by 30% ?
29364. An example of unsteady non uniform flow is the flow of liquid under pressure through a
29365. Which of the following contributes maximum as main source of sulphur in the blast furnace charge ?
29366. A colloidal system, in which a liquid is dispersed in gas is called a/an
29367. Blast furnace is a
29368. Speed of a submarine in deep sea & that of an aeroplane is measured by a/an
29369. The primary strengthening mechanism in 70 : 30 brass is the
29370. X-rays do not exhibit the property of
29371. Killed steels
29372. Which of the following phenomenon/ phenomena is/are diffusion controlled ?
29373. Joule-Thomson co-efficient is the ratio of
29374. Expansion device used in a window air-conditioner is a/an
29375. In the acid Bessemer process, the hot metal should have the following com-positon.
29376. Which of the following does not come under the category of electrochemical corrosion ?
29377. Unbreakable crockeries are made from __________ polymers.
29378. Cupola produces __________ iron..
29379. Euler number is defined as the ratio of inertia force to __________ force.
29380. Holes for rivetting purposes should be preferably made by
29381. One of the methods of purification of leach liquor is ion exchange, which involves
29382. A steam pipe is intended to be insulated with two layers of insulating materials of different thermal conductivities. For minimum heat transfer to take place
29383. Large diameter shafts are manufactured by
29384. Common salt is produced from sea water in India generally by the __________ method.
29385. Batch process is preferred over continuous process, when the
29386. Which of the following is a permanent fastening?
29387. Hot & cold working of material causes its __________ deformation.
29388. The ratio of thermal & electrical conductivity is same for all the metals at the same temperature ; and at around room temperature, this ratio is proportional to(where, T = absolute temperature, °K)
29389. In a fuel cell, chemical energy is converted into
29390. Which of the following is not a cupro-nick-el alloy ?
29391. Electrochemical corrosion occurs
29392. The ability of tool steel to resist softening at high temperatures is termed as __________ hardness.
29393. Improvement in mechanical properties of metals in its hot working is due to the grains
29394. Young's modulus of elasticity of a material is the slope of the initial linear portion of the stress-strain curve. It decreases ap-preciablyby
29395. Venturimeter is used to measure the flow rate of fluids in pipes, when the pipe is in __________ position.
29396. Often earing defects are found during deep drawing operation, because the
29397. __________ is not a case hardening process.
29398. Which one can be directly solidified from gaseous state wihtout entering into liquid state ?
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