Sail E0 Webinar

MCQs

Total Questions : 2525 | Page 6 of 253 pages
Question 51. To reduce the tube side pressure drop for the same flow rate, the heat exchanger recomended is
  1.    1-2 heat exchanger
  2.    1-1 heat exchanger
  3.    3-2 heat exchanger
  4.    2-4 heat exchanger
 Discuss Question
Answer: Option B. -> 1-1 heat exchanger
Question 52. In the free convection regime of pool boiling, the heat flux is proportional to
  1.    Δt1/2
  2.    Δt2
  3.    Δt5/4
  4.    Δt
 Discuss Question
Answer: Option C. -> Δt5/4
Question 53. The average heat transfer co-efficient over the entire length of the plate (ha) and the local heat transfer co-efficient (hL), in case of heat transfer over a flat plate in lminar zone is related as
  1.    Ha = 0.8hL
  2.    Ha = 2hL
  3.    Ha = hL
  4.    Ha= 5hL
 Discuss Question
Answer: Option B. -> Ha = 2hL
Question 54. Prandtl and Reynolds analogy are same, when Prandtl number is
  1.    0.5
  2.    1
  3.    > 2
  4.    1.5
 Discuss Question
Answer: Option B. -> 1
Question 55. For what value of Prandtl number, St = f/2?
  1.    1.5
  2.    1
  3.    > 1
  4.    < 1
 Discuss Question
Answer: Option B. -> 1
Question 56. Calburn analogy is applicable for the value of Prandtl number from
  1.    0.001 to 1
  2.    0.6 to 120
  3.    0.5 to 5
  4.    120 to 400
 Discuss Question
Answer: Option B. -> 0.6 to 120
Question 57. Conduction occurs in the buffer zone for a fluid flowing through a heated pipe, only when Prandtl number is
  1.    0.1
  2.    >1
  3.    < 1
  4.    L
 Discuss Question
Answer: Option A. -> 0.1
Question 58. Baffles are provided in heat exchangers to increase the
  1.    Fouling factor
  2.    Heat transfer area
  3.    Heat transfer co-efficient
  4.    Heat transfer rate
 Discuss Question
Answer: Option C. -> Heat transfer co-efficient
Question 59. Conductance is given by(where, x = thickness, A = heat flow area, K = thermal conductivity.)
  1.    X/KA
  2.    KA/x
  3.    K/Ax
  4.    A/Kx
 Discuss Question
Answer: Option B. -> KA/x
Question 60. What is the geometric mean of two heat transfer areas A₁ and A₂ ?
  1.    √(A₁ . A₂)
  2.    √(A₁ + A₂)
  3.    1/2 √(A₁ . A₂)
  4.    2 √(A₁ . A₂)
 Discuss Question
Answer: Option A. -> √(A₁ . A₂)

Latest Videos
Chapter 1 - GLOBAL STEEL SCENARIO & INDIAN STEEL INDUSTRY Part 1 : (13-04-2024) INDUSTRY AND COMPANY AWARENESS (ICA)
Direction Sense Test Part 1 Reasoning (Hindi)
Chapter 1 - RMHP / OHP / OB & BP Part 1 : (14-02-2024) GPOE
Cube & Cuboid Part 1 Reasoning (Hindi)
Data Interpretation (DI) Basic Concept Reasoning (Hindi)
Counting Figures Part 1 Counting Of Straight Lines Reasoning (Hindi)
Sail E0 free webinar Webinars
Real Numbers Part 7 Class 10 Maths
Real Numbers Part 1 Class 10 Maths
Polynomials Part 1 Class 10 Maths

Latest Test Papers

Pie Chart - Test Paper 1 Data Interpretation Reasoning & DI
Tabulation - Test Paper 2 Data Interpretation Reasoning & DI
Test Paper 1 Direction Sense Test Reasoning & DI
ICA , RDIC,GFM Free Modal Test Paper - Non - Technical Branch Old Syllabus 2022 - SAIL Junior Officer E0
GFM Combined 1 Free Revision Test SAIL JO E-0