AUTOMOBILE ENGINEERING MCQ SECTION 25

241. In diesel engine, the compression ratio in comparison to expansion ratio is

(A) same

(B) less

(C) more

(D) variable

Answer: - more

242. In a cycle, the spark lasts roughly for

(A) 1 sec

(B) 0.1 sec

(C) 0.01 sec

(D) 0.001 sec

Answer: - 0.001 sec

243. Supercharging is essential in

(A) diesel engines

(B) gas turbines

(C) petrol engines

(D) aircraft engines

Answer: - aircraft engines

244. The mean effective pressure obtained from engine indicator indicates the

(A) maximum pressure developed

(B) minimum pressure

(C) exhaust pressure

(D) average pressure

Answer: - average pressure

245. A solar cell converts

(A) heat energy into electrical energy

(B) solar energy into electrical energy

(C) heat energy into light energy

(D) solar energy into light energy

Answer: - solar energy into electrical energy

246. The fuel used in the nuclear reactor is

(A) Cadmium

(B) Radium

(C) Uranium

(D) Thorium

Answer: - Uranium

247. The specific heat of water is

(A) 4.186 kJ/g° C

(B) 4.186 cal/g° C

(C) 4.186 J/g° C

(D) 4.186 J/kg° C

Answer: - 4.186 J/g° C

248. The energy which is not derived from the sun is

(A) bio-mass

(B) fossil fuels

(C) nuclear energy

(D) geo-thermal energy

Answer: - nuclear energy

249. A solar cell is made up of

(A) silicon

(B) titanium

(C) magnesium

(D) Teflon

Answer: - silicon

250. In a solar panel, the metal used is

(A) gold

(B) copper

(C) silver

(D) nickel

Answer: - silver