ANS:C - 41253

No answer description is available. 

ANS:D - Base class object will call base class function and derived class object will call derived class function.

No answer description is available. Let's discuss.

ANS:A - 1, 3, 2, 4, 5

No answer description is available. 

ANS:C - reactive power is more than the actual power

No answer description is available.

ANS:B - 3

The degree of freedom for leaching and solvent extraction processes can vary depending on the specific conditions and parameters of the process. However, in general, the degree of freedom for these processes is typically equal to or less than one. The degree of freedom (DOF) in a process represents the number of independent variables that can be varied while keeping all other variables fixed to maintain a specific condition or outcome. In the context of leaching and solvent extraction processes, various factors such as the composition of the feed and solvent, temperature, pressure, flow rates, and equipment specifications can influence the efficiency and effectiveness of the process. In many cases, the conditions of leaching and solvent extraction processes are tightly controlled to achieve desired outcomes such as maximum extraction efficiency, product purity, or minimizing solvent consumption. This often results in limited degrees of freedom, as adjustments to one parameter may require compensating changes in other parameters to maintain process stability and performance. For example, in a simple batch leaching process with a fixed feed composition, solvent-to-feed ratio, and temperature, the degree of freedom may be zero because all process parameters are predetermined and cannot be adjusted independently. However, in more complex continuous or multistage processes where parameters such as flow rates, concentrations, or temperatures can be adjusted, the degree of freedom may be slightly higher but still constrained by process requirements and limitations.

ANS:A - V/V_max = (x/r)^1/7

For turbulent fluid flow in a pipe, the expression for Prandtl's one-seventh power law relating the velocity VVV at distance xxx from the pipe wall to the maximum velocity VmaxV_{\text{max}}Vmax​ is: VVmax=(xr)1/7\frac{V}{V_{\text{max}}} = \left( \frac{x}{r} \right)^{1/7}Vmax​V​=(rx​)1/7

Explanation:

1. Prandtl's One-Seventh Power Law:
   • Prandtl's one-seventh power law describes the radial velocity profile in fully developed turbulent flow in a pipe.
   • According to this law, the velocity VVV at a distance xxx from the centerline (where rrr is the pipe radius) varies with the seventh root of the radial distance xxx.
   • This means that as you move away from the centerline towards the pipe wall, the velocity decreases following a power law relationship.
2. Options Analysis:
   • VVmax=(xr)1/7\frac{V}{V_{\text{max}}} = \left( \frac{x}{r} \right)^{1/7}Vmax​V​=(rx​)1/7: This correctly represents Prandtl's one-seventh power law, where xxx is the radial distance from the pipe centerline and rrr is the pipe radius.
   • VVmax=(rx)1/7\frac{V}{V_{\text{max}}} = \left( \frac{r}{x} \right)^{1/7}Vmax​V​=(xr​)1/7: This would describe an inverse relationship, which is not consistent with Prandtl's law.
   • VVmax=(x⋅r)1/7\frac{V}{V_{\text{max}}} = \left( x \cdot r \right)^{1/7}Vmax​V​=(x⋅r)1/7: This would imply a multiplication, which is not the form of Prandtl's law.
   • None of these: This option is incorrect because the correct form of Prandtl's one-seventh power law is represented by the first option.

Conclusion:

ANS:B - Vishakhapatnam

The 8th Vande Bharata Express train connects Secunderabad to Vishakhapatnam.

ANS:C - Chennai

The first International Book Fair was held in Chennai.

ANS:C - Nalanda

The ASI discovered two 1200-year-old miniature stupas in the Nalanda district.

ANS:D - Mumbai

The 14th edition of the World Spice Congress will be held in Mumbai on February 16-18, 2023.