MCQs
Total Questions : 2525
| Page 22 of 253 pages
Answer: Option C. -> Higher tube side heat transfer co-efficient
Answer: Option C. -> Heat flux at the wall to that across the entire pipe
Answer: Option C. -> Account for the uneven expansion of shell and tube bundles
Answer: Option C. -> Catchall
Question 215. Three solid objects of the same material and of equal mass-a sphere, a cylinder (length = diameter) and a cube are at 500°C initially. These are dropped in a quenching bath containing a large volume of cooling oil each attaining the bath temperature eventually. The time required for 90% change in temperature is the smallest for
Answer: Option A. -> Cube
Question 216. In Joule's experiment, an insulated container contains 20 kg of water initially at 25°C. It is stirred by an agitator, which is made to turn by a slowly falling body weighing 40 kg through a height of 4 m. The process is repeated 500 times. The acceleration due to gravity is 9.8 ms⁻². Neglecting the heat capacity of agitator, the temperature of water (in °C) is
Answer: Option B. -> 34.4
Answer: Option C. -> 3.66
Answer: Option C. -> Wien's displacement
Answer: Option D. -> None of these
Answer: Option A. -> Large scale evaporation of liquor is needed