ANS:E - Shout

Explanation: All except Shout are sounds produced by animals.

ANS:A - 1 and 3 only

IPv4 addresses are 32 bits long and are represented in decimal format. IPv6 addresses are 128 bits long and represented in hexadecimal format.

ANS:A - πD^8/3 = 4 b^8/3

When two sewer sections are hydraulically equivalent, it means that they have the same flow capacity for a given flow rate and slope. In this case, we're comparing a circular sewer with diameter D to a square sewer with side α. The relationship between their dimensions can be determined using the hydraulic radius (R) of each section. For a circular sewer, the hydraulic radius (RD​) is given by half the diameter: RD​=D/2​ For a square sewer, the hydraulic radius (Rb​) is equal to half the side length: Rb​=α/2​ Since the two sewer sections are hydraulically equivalent, their hydraulic radii are equal: RD​=Rb​ D/2​=α​/2 D=α So, the diameter of the circular sewer is equal to the side of the square sewer. Given that D=α, we can substitute α for D in the options provided:

1. πD8/3=4⋅b8/3 becomes 8/3=4⋅8/3πα8/3=4⋅b8/3
2. πD3/8=4⋅b3/8 becomes  πα3/8=4⋅b^3/8
3. πD2/3=4⋅b2/3 becomes πα2/3=4⋅b^2/3
4. πD3/2=4⋅b3/2 becomes  πα3/2=4⋅b^3/2

ANS:C - one mod-13 counter followed by mod-6 counter

Modulus 13 x modulus 6 = modulus 78.

ANS:A - increased COP.

In a vapor compression refrigeration system, the coefficient of performance (COP) is defined as the ratio of desired cooling effect to the work input: COP=Desired Cooling EffectWork InputCOP=Work InputDesired Cooling Effect​ Lowering the condenser temperature while keeping the evaporator temperature constant affects the performance of the refrigeration system.

• If the condenser temperature is lowered, the temperature difference between the condenser and the surroundings increases. This results in increased efficiency in rejecting heat to the surroundings, thus reducing the work input required for the compressor. As a result, the COP of the refrigeration system typically increases.

ANS:C - Astrashakti

India's Akash missile system achieved a global first during the 'Astrashakti' military exercise by engaging four aerial targets simultaneously at a range of 25 kilometres, showcasing India's technological prowess and unique capabilities.

ANS:D - 2023

Sergio Perez won the Saudi Arabian Grand Prix in 2023.