371. A material in which the atoms are arranged regularly in some directions but not in others, is termed as ‘mesomorphous material’; an example of which is_________________?
A. Lead
B. Glass
C. Mica
D. Silver

372. In case of simple harmonic motion, displacement is proportional to the_________________?
A. Velocity
B. Acceleration
C. Both A. & B.
D. Neither A. nor B.

373. Which of the following is preferred for riveting ?
A. Lap joint
B. Butt joint
C. Either A. or B.
D. Neither A. nor B.

374. Friction factor for fluid flow in pipe does not depend upon the________________?
A. Pipe length
B. Pipe roughness
C. Fluid density & viscosity
D. Mass flow rate of fluid

375. Alloys having more than 80% copper are generally more______________________?
A. Abrasion resistant
B. Corrosion resistant
C. Prone to season cracking
D. Machinable

376. __________________ is used for tying the steel columns to concrete foundation?
A. Grouting
B. Eyebolt
C. Anchor bolts
D. Refractory castables

377. Cobalt – 60 is used as a source of _____________ in medical therapy & industrial radiography?
A. X-rays
B. γ-rays
C. α-rays
D. β-rays

378. _______________ is the hardest oxide and is hence used where high wear resistance at high temperature is required?
A. Beryllium
B. Zirconia
C. Alumina
D. Magnesia

379. For preparation of porous bearings by powder metallurgy, preferred particle shape is___________________?
A. Spherical
B. Nodular
C. Irregular
D. No preferred shape

380. The cooling rate required to freeze 1 ton of water at 0°C into ice at 0°C in 24 hours is ______________ BTU/hr?
A. 100
B. 200
C. 1000
D. 2000

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