Sail E0 Webinar

MCQs

Total Questions : 2525 | Page 8 of 253 pages
Question 71. For __________ Prandtl number values, the heat conduction will be negligible in the buffer zone.
  1.    Extremely low
  2.    Low
  3.    High
  4.    No
 Discuss Question
Answer: Option C. -> High
Question 72. __________ paint has the minimum absorption co-efficient.
  1.    Black
  2.    White lead
  3.    Grey
  4.    Light cream
 Discuss Question
Answer: Option B. -> White lead
Question 73. In case of evaporators, liquid entrainment results primarily due to
  1.    High vacuum in the evaporator
  2.    High evaporation rate
  3.    Foaming of the solution
  4.    High heat transfer rate
 Discuss Question
Answer: Option C. -> Foaming of the solution
Question 74. In a shell and tube heat exchanger, the shell side fluid velocity can not be changed by changing the
  1.    Tube layout
  2.    Tube diameter
  3.    Tube pitch
  4.    No. of baffles
 Discuss Question
Answer: Option B. -> Tube diameter
Question 75. Indirect contact heat exchangers are preferred over direct contact heat exchangers, because
  1.    Heat transfer co-efficient are high
  2.    There is no risk of contamination
  3.    There is no mist formation
  4.    Cost of equipment is lower
 Discuss Question
Answer: Option B. -> There is no risk of contamination
Question 76. A measure of the extent to which viscous heating is important relative to the heat flow resulting from the impressed temperature difference is represented by the __________ number.
  1.    Condensation
  2.    Grashoff
  3.    Stantan
  4.    Brinkman
 Discuss Question
Answer: Option D. -> Brinkman
Question 77. Nucleate boiling is promoted
  1.    On polished surfaces
  2.    On rough surfaces
  3.    In the absence of agitation
  4.    None of these
 Discuss Question
Answer: Option B. -> On rough surfaces
Question 78. A body cools down from 75°C to 70°C in 10 minutes. It will cool down from 70° C to 65° C in __________ minutes.
  1.    10
  2.    >10
  3.    Either B or C, depends on the mass of the body
 Discuss Question
Answer: Option B. -> >10
Question 79. Black liquor generated during paper manufacture is concentrated in a
  1.    Single effect evaporator
  2.    Single effect evaporator followed by a crystalliser
  3.    Multiple effect evaporator
  4.    Multiple effect evaporators followed by a crystalliser
 Discuss Question
Answer: Option C. -> Multiple effect evaporator
Question 80. If the baffle spacing in a shell and tube heat exchanger increases, then the Reynolds number of the shell side fluid
  1.    Remains unchanged
  2.    Increases
  3.    Increases or decreases depending on number of shell passes
  4.    Decreases
 Discuss Question
Answer: Option D. -> Decreases

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