MCQs
Total Questions : 70
| Page 3 of 7 pages
Answer: Option C. -> 2πrml
Answer: (c).2πrml
Answer: (c).2πrml
Answer: Option A. -> A1 + A2/2
Answer: (a).A1 + A2/2
Answer: (a).A1 + A2/2
Answer: Option A. -> k 1 + 3 k 2/4
Answer: (a).k 1 + 3 k 2/4
Answer: (a).k 1 + 3 k 2/4
Answer: Option C. -> Logarithmic
Answer: (c).Logarithmic
Answer: (c).Logarithmic
Question 25. A hot fluid is being conveyed through a long pipe of 4 cm outer diameter and covered with 2 cm thick insulation. It is proposed to reduce the conduction heat loss to the surroundings to one-third of the present rate by further covering with same insulation. Calculate the additional thickness of insulation
Answer: Option B. -> 12 cm
Answer: (b).12 cm
Answer: (b).12 cm
Question 26. The following data pertains to a hollow cylinder and a hollow sphere made of same material and having the same temperature drop over the wall thickness
Inside radius = 0.1 m and outside surface area = 1 square meter
If the outside radius for both the geometrics is same, calculate the ratio of heat flow in the cylinder to that of sphere?
Inside radius = 0.1 m and outside surface area = 1 square meter
If the outside radius for both the geometrics is same, calculate the ratio of heat flow in the cylinder to that of sphere?
Answer: Option C. -> 1.756
Answer: (c).1.756
Answer: (c).1.756
Answer: Option C. -> k
Answer: (c).k
Answer: (c).k
Answer: Option D. -> 2 π l/log e (r₂/r₁)
Answer: (d).2 π l/log e (r₂/r₁)
Answer: (d).2 π l/log e (r₂/r₁)
Answer: Option A. -> A/δ
Answer: (a).A/δ
Answer: (a).A/δ
Answer: Option B. -> False
Answer: (b).False
Answer: (b).False