- (A) The cooling rate will be the same for the two spheres and hence the two spheres will have equal temperatures at any instant
- (B) Both the spheres will emit equal amount of radiation per unit time in the beginning
- (C) Both will absorb equal amount of radiation from the surrounding in the beginning
- (D) Both
Chemical Engineering Mcqs
- (A) Brick
- (B) Air
- (C) Water
- (D) Silver
- (A) Avoid cavitation
- (B) Avoid frequent priming
- (C) Create more suction head
- (D) None of these
- (A) Steam pressure
- (B) Feed temperature
- (C) Number of effect
- (D) Both
- (A) Non-dimensional factor
- (B) Factor of safety
- (C) Conversion factor for individual film heat transfer co-efficient to overall heat transfer coefficient
- (D) None of these
- (A) Atmospheric
- (B) Sub-atmospheric
- (C) Negative
- (D) Very high
- (A) Thickness of the wall
- (B) Area of the wall perpendicular to heat flow
- (C) Material of the wall
- (D) Temperature difference between the two surfaces of the wall
- (A) 1
- (B) < 1
- (C) > 1
- (D) > 5
- (A) High viscosity liquid is to be cooled
- (B) Requirement of heat transfer area is low
- (C) Overall heat transfer co-efficient is very high
- (D) A corrosive liquid is to be heated
- (A) Clean and dirt free
- (B) Smooth clean
- (C) Contaminated cooling
- (D) Polished
