List of top Agricultural Engineering and Technology Questions on Renewable Energy Sources asked in ICAR AIEEA (PG)

If the diameter (d) of horizontal axis rotor is doubled and wind speed (V) is halved, the available wind power (Pa ) will

Given below are two statements
Statement I: In solar cell electromagnetic energy is converted into electricity while as in fuel cell chemical energy is converted into electricity
Statement II: In both solar cell and fuel cell conversion efficiency is limited by externally reversible heat engine cycle
In light of the above statements, choose the most appropriate answer from the options given below

Given below are two statements, one is labelled as Assertion A and the other is labelled as Reason R
Assertion A: The output gases from downdraft gasifier are relatively cleaner compared to gases from updraft gasifier
Reason R: In downdraft gasifier the products from the pyrolysis zone and drying zone pass through oxidation zone causing thermal cracking of volatiles
In light of the above statements, choose the correct answer from the options given below

Given below are two statements: Statement (I): Flumes are specially shaped and constructed channel sections used to measure the flow of water. Statement (II): The principle of flumes is based on the concept of kinetic energy and critical flow in open channels. In light of the above statements, choose the most appropriate answer from the options given below:

The percentage of the incoming solar radiation reflected back to space by the earth is:

Which of the following are thermochemical conversion processes for biomass
(A). Gasification
(B). Anaerobic digestion
(C). Fermentation
(D). Liquification
Choose the correct answer from the options given below:

Which of the following are true in case of machine and structure
(A). The members of structure do not move relative to one another.
(B). In a structure energy is transformed into useful work.
(C). The links of a machine may transform both power and motion.
(D). The members of a structure transmit forces only.
Choose the correct answer from the options given below:

Pyrolysis of biomass at a relatively low temperature produces

Consider the following statements related to biomass conversion techniques.

Statement (I): Thermo-chemical processes have higher efficiencies than bio-chemical processes.

Statement (II): In comparison to bio-chemical conversion techniques, thermo-chemical conversion techniques have superior ability to decompose lignin.

Choose the correct answer from the options given below.

Which country is having a full-fledged Ministry for Development of New and Renewable Resources?

Match List-I with List-II:

List-I (Process)	List-II (Characteristic)
(A) Adiabatic	(I) No volume change takes place
(B) Isochoric	(II) No pressure change takes place
(C) Isobaric	(III) No temperature change takes place
(D) Isothermal	(IV) No heat transfer takes place

Choose the correct answer from the options given below:

Calculate the theoretical power generated by a wind rotor of 5 m diameter with wind velocity of 7.2 km.h\(^{-1}\). Assume air density as 1.4 kg.m\(^{-3}\).

Calculate the theoretical power generated by a wind rotor of 5 m diameter with wind velocity of 7.2 km.h\(^{-1}\). Assume air density as 1.4 kg.m\(^{-3}\).

Assertion A: Solar pond is an artificially constructed water pond in which significant temperature rise occurs in lower region.
Reason R: The salinity gradient (salt-slope) gives pond a vertical density difference creating a non-convecting environment.
In light of the above statements, choose the most appropriate answer from the options given below:

Pyrheliometer is an instrument used for measuring

What is the standard value of the solar constant?

The value of concentration ratio of a flat plate collector is