|
Directions to Solve
Rearrange the following five sentences in proper sequence to form a meaningful paragraph, then answer the questions given below.
- Kiran received a call to attend the interview.
- He applied for a new job.
- Kiran was an ambitious boy.
- But, he was not happy there.
- His father had put him in a clerical job.
ANS:E - 5
No answer description is available.
|
ANS:C - constructor
No answer description is available. Let's discuss.
|
A
B
C
3  .
D
ANS:A -
No answer description is available.
|
B
tree contain all the nodes
C
tree does not contain any loop
ANS:D - all
No answer description is available.
|
ANS:C - 9
To determine the number of trays required for 98% recovery of acetone from air in the isothermal dilute absorber using pure water as a solvent, we can use the given design equation:
𝑁+2=6log(𝑦in𝑦out)N+2=6log(youtyin)
Given:
- 𝑦in=0.05yin=0.05 (mole fraction of acetone in incoming air)
- 𝑦out=0.02yout=0.02 (desired mole fraction of acetone in outgoing air for 98% recovery)
Substituting these values into the equation:
𝑁+2=6log(0.050.02)N+2=6log(0.020.05)
𝑁+2=6log(2.5)N+2=6log(2.5)
𝑁+2=6×0.3979N+2=6×0.3979
𝑁+2=2.3874N+2=2.3874
𝑁≈2.3874−2N≈2.3874−2
𝑁≈0.3874N≈0.3874
Since the number of trays (N) must be a whole number, we round up to the nearest integer:
𝑁≈1N≈1
Therefore, the number of trays required for 98% recovery of acetone is 1.
|
ANS:A - irrotational
The potential function is applicable only for irrotational flow.
Explanation:
-
Irrotational Flow: Irrotational flow refers to flow where the fluid particles do not rotate about their own axes as they move. Mathematically, this means the curl of the velocity vector field V\mathbf{V}V is zero, i.e., ∇×V=0\nabla \times \mathbf{V} = 0∇×V=0.
- In irrotational flow, there exists a scalar function called the potential function ϕ\phiϕ such that V=∇ϕ\mathbf{V} = \nabla \phiV=∇ϕ.
- This potential function ϕ\phiϕ satisfies Laplace's equation ∇2ϕ=0\nabla^2 \phi = 0∇2ϕ=0, and it provides a straightforward way to express the velocity field.
-
Turbulent Flow: Turbulent flow involves chaotic, irregular fluctuations in velocity and pressure. It is characterized by eddies and vortices, indicating significant rotational components in the flow. Therefore, a potential function cannot describe turbulent flow due to the presence of vorticity.
-
Steady Flow: Steady flow refers to flow where the velocity field does not change with time at any point in the flow field. While potential functions are applicable to steady flow, steady flow alone does not ensure the applicability of a potential function; the flow must also be irrotational.
-
None of These: This option is incorrect because potential functions are specifically applicable to irrotational flow and not to turbulent flow or steady flow alone.
Conclusion:
The potential function is uniquely applicable to describe irrotational flow, where it provides a convenient mathematical representation of the velocity field. Therefore, the correct answer is irrotational flow.
|
ANS:B -
Dehradun
The Global Investors Summit is set to be hosted in Dehradun by the Uttarakhand government on December 8-9, emphasizing over 15 investor-friendly policies and aiming to attract potential investors through good governance, a supportive regulatory framework, and sustainable practices.
|
ANS:D -
Kolkata
Kolkata, formerly known as Calcutta, has secured its position as the safest city in India for the third consecutive year, as per the National Crime Records Bureau (NCRB) report.
|
ANS:A -
Arunachal Pradesh
The Hump WWII Museum was inaugurated in Pasighat, located in the state of Arunachal Pradesh, as a tribute to the aviators who navigated the perilous air route between north-eastern Assam and Yunnan in China, known as 'The Hump.'
|
ANS:C -
Kolkata
FITEXPO INDIA 2023, described as a 'Kumbh Mela' for sports, fitness, and wellness, commenced at Biswa Bangla Mela Prangan in Kolkata on December 1. The event featured notable dignitaries and prominent figures from the fitness, sports, and wellness industry.
|
