MECHANICAL ENGINEERING MCQ SECTION 34

331. The internal energy of an ideal gas is a function of

(A) Temperature and pressure

(B) Volume and pressure

(C) Entropy and pressure

(D) Temperature only

Answer: -Temperature only

332. When the cutting edge of the tool is dull, then during machining

(A) Discontinuous chips are formed

(B) Continuous chips are formed

(C) Continuous chips with built-up edge are formed

(D) No chips are formed.

Answer: -Continuous chips with built-up edge are formed

333. A dense structure of a grinding wheel is used for

(A) Hard materials

(B) Brittle materials

(C) Finishing cuts

(D) All of these

Answer: -All of these

334. Plastic bottles are manufactured using the process of

(A) Blow moulding

(B) Injection moulding

(C) Atomizing

(D) Die casting

Answer: -Blow moulding

335. The Laser Beam Machining process can be carried out, when the media for

energy transfer between tool and workpiece is

(A) Air

(B) Liquid

(C) Vacuum

(D) Any of the above medium

Answer: -Air

336. V-blocks (Vee locators) are used for clamping as well as locating when faces

are inclined upto

(A) 30 degree

(B) 12 degree

(C) 9 degree

(D) 3 degree

Answer: -3 degree

337. What does N, P and L mean in N.P.L. Gauge interferometer?

(A) Nikon pulsed laser

(B) Nuclear plasma laboratory

(C) National Physics Laboratory

(D) Nuclear physics laboratory

Answer: -National Physics Laboratory

338. What is swing over carriage?

(A) The maximum diameter of workpiece that can be rotated over the bed

ways

(B) The minimum diameter of workpiece that can be rotated over the bed

ways

(C) The maximum diameter of workpiece that can be rotated over lathe

saddle

(D) The minimum diameter of workpiece that can rotated over lathe saddle

Answer: -The maximum diameter of workpiece that can be rotated over lathe

Saddle

339. Nodular cast iron is produced by adding _________ to the molten cast iron.

(A) Copper

(B) Chromium

(C) Nickel

(D) Magnesium

Answer: -Magnesium

340. Smelting is the process of

(A) Expelling moisture, carbon dioxide, sulphur and arsenic from the iron

ore by heating in shallow kilns

(B) Removing the impurities like clay, sand etc. from the iron ore by washing

with water

(C) Reducing the ore with carbon in the presence of a flux

(D) All of the above

Answer: -Reducing the ore with carbon in the presence of a flux