Bissoy.com
Doctors Medicines MCQs Q&A

Which of the following are used as absorbers in evacuated-tube solar collectors?

Which of the following are used as absorbers in evacuated-tube solar collectors? Correct Answer Metallic or glass tubes

Metallic or glass tubes are used as absorbers in evacuated-tube solar collectors. Wood and plastic are thermal insulators and hence, cannot be used to create passageways for the heat carrying circulating fluid.

Related Questions

The following sentences form a paragraph. The FIRST and SIXTH sentences of the paragraph are given. The rest of the sentences are numbered as B, C, D, ad E, which are not in proper order. Read the sentences and place them in chronological order. National Solar Mission is one of the eight missions set up of National Action Plan on Climate change (NAPCC) that was released on 30 June 2008. With this ambitious target, India will become one of the largest Green Energy producers in the world, surpassing several developed countries. Government stepped up India’s solar power capacity target under the Jawaharlal Nehru National Solar Mission (JNNSM), by five times, reaching 1,00,000 MW by 2022. The target will principally comprise 40 GW Rooftop and 60 GW through Large and Medium Scale Grid Connected Solar Power Projects. The new targets were approved in June 2015. During recent times with improvement in technology and scaling up production capacities, solar energy has become cost-competitive and targets seem to be more viable now.
In a solar operated steam power plant, water is converted into steam via solar heat. If the effective area of solar plate is 200m2, value of solar constant is 1.362KW per m2, efficiency of solar components is 17% and overall thermal efficiency of steam cycle desired is 12%. Find the turbine power output?
With reference to technologies for solar power production, consider the following statements: 1. 'Photovoltaics' is a technology that generates electricity by direct conversion of light into electricity, while 'Solar Thermal' is a technology that utilizes the Sun's rays to generate heat which is further used in the electricity generation process. 2. Photovoltaics generates Alternating Current (AC), while Solar Thermal generates Direct Current (DC). 3. India has a manufacturing base for Solar Thermal technology, but not for Photovoltaics. Which of the statements given above is/are correct?
What are the limitations of solar energy? 1. Collecting solar energy over large areas and converting it to other forms that can be conveniently transported, stored and used in existing equipment is not economical 2. Low density of solar energy as compared to coal, oil and gas 3. Its major applications are photothermal conversion, solar water heating, green housing technology and photo voltaic conversion Select the correct answer using the codes given below:
In the following figure, triangle represents artists, square represents military officers, circle represents stamp collectors and rectangle represents fathers. Which set of letters represents stamp collectors who are military officers?
In the following figure, square represents Artists, triangle represents Military officers, circle represents collectors and rectangle represents Fathers. Which set of letters represents collectors who are either military officers or fathers?
In the following figure, Square represents Artists, Triangle represents Military officers, Circle represents Collectors and Rectangle represents Fathers. Which set of letters represents Collectors who are either Artists or Fathers?
In the following figure, square represents Dentists, triangle represents Collectors, circle represents Indians and rectangle represents Women. Which set of letters represents Indians who are either collectors or women?
In the Following figure, square represents Artists, triangle represents Military officers, circle represents Collectors and rectangle represents Fathers. Which set of letters represents Collectors who are either Artist or Fathers but not Military Officers?
What is the advantage of wet collectors over dry collectors?