ANS:C - 1765113

Let 4300731 - x = 2535618 Then x, = 4300731 - 2535618 = 1765113

ANS:D - 1200

 3251          Let 4207 - x = 3007
+ 587          Then,  x = 4207 - 3007 = 1200
+ 369
 ----
 4207
 ----

ANS:A - Antiquarian

No answer description is available. 

ANS:C - A reference must always be initialized.

No answer description is available. Let's discuss.

ANS:B - 200

Here Each sub division = 5mm,
1m = 1000mm,
So, 1000/5 = 200. The distance of 1 between to redline in leveling staff is 5 mm so subdivision is 5 mm.
For 1 meter length- 1000/5 so answer is 200 mm. Each sub division = 5mm,
1m = 1000mm,
1000/5 = 200.

ANS:A - Both A and R are true and R is correct explanation of A

No answer description is available.

ANS:C - ∞

The number of theoretical plates in a distillation column is minimized at a reflux ratio of ∞. At a reflux ratio of ∞, all the vapor leaving the top of the column is condensed and returned to the column as reflux. This essentially means that no product is withdrawn from the top of the column, and all the vapor is condensed and returned to the column. In this scenario, the equilibrium between the liquid and vapor phases is constantly maintained throughout the column, resulting in the minimum number of theoretical plates required for separation. Therefore, the correct answer is ∞.

ANS:D - Large scale cavitation can not damage pipeline, restrict fluid flow and damage steam turbine blades.

The wrong statement about cavitation is: Large scale cavitation can not damage pipeline, restrict fluid flow and damage steam turbine blades. Here’s why this statement is incorrect:

• Impact of Cavitation: Cavitation can indeed cause significant damage and operational issues in fluid systems:
  1. Damage to Pipeline: Cavitation can erode and damage the internal surfaces of pipelines, especially at areas where it occurs intensely. This erosion can weaken the pipeline over time.
  2. Fluid Flow Restriction: The formation and collapse of vapor cavities (bubbles) during cavitation can create turbulence and pressure fluctuations, which may lead to flow restriction and inefficient operation of the system.
  3. Damage to Turbine Blades: In steam turbines or other rotating equipment, cavitation can lead to erosion and pitting on the surfaces of turbine blades or other components exposed to the cavitation zone. This can degrade the efficiency and lifespan of the equipment.
• Cavitation Characteristics: Cavitation typically starts at regions of lower pressure and higher velocity, not higher static pressure and lower velocity in larger diameter pipelines as stated in the incorrect option.

ANS:D - Chamba

Prime Minister Narendra Modi has laid the foundation stone of two hydropower projects in Chamba in Himachal Pradesh.

ANS:A - Ministry of Power

The Union Power Ministry has started the process of setting up transmission systems for renewable energy zones (REZ) with 66.5 GW capacity by the current year to integrate non-fossil fuel energy sources with the national grid.