ANS:E - 2143

No answer description is available. 

ANS:B - Both I and II are false.

No answer description is available. Let's discuss.

ANS:A -

Given: gradient 1 in N.
Wkt gradient = H/L.
Chain length = 100links=20m chain
Gradient = H/L = 1/N.
H = L/N.
Correction slag = H^2/2L.
CS = (L/N)^2/(2*L).
Substitute L =20m.
We will get 100/n^2. or  We know 100 links =20 m chain.
Son horizontal =1 unit
20 m horizontal =20/n
i.e. h=20/n
L=20m.

Slope correction = h^2/2l
So (20/n)^2/2*20
= 100/n^2(ans) Correction per chain length of 100 links =100*α^2, here α is Radians. α=1/n(rise of 1 unit in n horizontal units).

Therefore the correction = 100/n^2.

ANS:C - varies directly with frequency

No answer description is available.

ANS:B - decreasing pressure

Azeotropism for the ethyl alcohol-water system disappears by increasing pressure. Here's why: Azeotropes are mixtures of liquids that have constant boiling points and compositions. In the case of the ethyl alcohol-water system, the ethanol-water azeotrope forms a constant-boiling mixture where the composition of the vapor phase is the same as that of the liquid phase. For the ethanol-water system, the azeotrope occurs at approximately 95.6% ethanol by mass, with a boiling point of around 78.1°C at atmospheric pressure. By increasing the pressure, the boiling points of the components increase. This change in boiling points disrupts the azeotropic behavior, causing the azeotrope to disappear. As a result, at higher pressures, the ethanol and water components of the mixture can be distilled separately without forming an azeotrope.

ANS:B - Venturimeter

Out of the flow measuring devices listed, the one that typically incurs the maximum installation cost as well as pressure loss is the Flow Nozzle.

Explanation:

1. Flow Nozzle:
   • Installation Cost: Flow nozzles are more complex in design compared to orificemeters and venturimeters. They require precise manufacturing and installation to ensure accurate flow measurement, which can increase installation costs.
   • Pressure Loss: Flow nozzles generally incur higher pressure losses compared to other devices like venturimeters and orificemeters. This is because they create a more significant obstruction in the flow path, resulting in higher head losses.
2. Venturimeter:
   • Installation Cost: Venturimeters are relatively simpler in design compared to flow nozzles. They are easier to install and require less precision in manufacturing, which can lead to lower installation costs.
   • Pressure Loss: Venturimeters typically have lower pressure losses compared to flow nozzles due to their smoother internal transitions and less obstruction to flow.
3. Rotameter:
   • Installation Cost: Rotameters are often used for smaller flow rates and are straightforward to install, typically involving insertion into a pipeline.
   • Pressure Loss: Rotameters have minimal pressure loss because they do not create significant obstructions in the flow path. They rely on the differential pressure across the float to measure flow rate.
4. Orificemeter:
   • Installation Cost: Orificemeters are simpler in design and installation compared to flow nozzles. They involve inserting a plate or disc into the flow stream.
   • Pressure Loss: Orificemeters can incur moderate pressure losses depending on the diameter of the orifice plate and the flow rate. However, they generally have lower pressure losses compared to flow nozzles.

Conclusion:

ANS:A - Guwahati

AYUSH Minister Sarbananda Sonowal inaugurated SCO's 1st International Conference & Expo on Traditional Medicine in Guwahati.

ANS:A - Bengaluru

The sensitization workshop on G-20 Environment and Climate Sustainability is being held in Bengaluru.

ANS:C - Jaipur

The Jaipur Literature Festival is being held completely in person for the first time since the COVID-19 outbreak.

ANS:C - Kargil and Jammu

The Indian Air Force is launching Kargil Courier Services between Kargil and Jammu.