Q. Absorption refrigeration uses _______ mechanical power input as compared to vapour compression refrigeration.

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Q. How is pressurization achieved in absorber refrigeration?

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Q. In absorber refrigeration, the solution of working fluid (ammonia) is pumped to a low pressure with a big pump.

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Q. Vapour compression refrigeration system is less complex than absorber refrigeration system.

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Q. What is solar cooker?

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Q. What is pasteurization?

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Q. Which of the following principles is used to concentrate sunlight in solar cookers?

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Q. Which of the following majorly affects the phenomenon of concentrating sunlight?

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Q. What is the typical temperature (range) used in domestic cooking?

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Q. What is the maximum temperature used in cooking?

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Q. The cooking pan used in solar cookers convert ______ energy to ______ energy.

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Q. Which of the following materials are used to make the cooking pan in a solar cooker?

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Q. Which of the following are used to manufacture parabolic dish concentrator?

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Q. Which of the following pot surfaces are preferred for solar cookers?

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Q. Convection should be reduced by isolating air inside the cooker from air outside the cooker.

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Q. Covering the pot with a glass lid ________ convection.

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Q. Evacuated tube solar cookers use ________ glass tube for the cooking chamber.

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Q. Which of the following best describes the working of a solar cooker?

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Q. Solar cookers do have operating costs.

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Q. In terms of cost, solar panel cookers use _______ material.

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