Q. “Heat transferred from the bowl of the spoon to the handle” is an example of which of the following way of heat transfer?

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Q. “The spoon is rinsed in running cold water. Heat gets absorbed by the water and the spoon gets cooler, until the spoon and the water are at the same temperature” is an example of which of the following way of heat transfer?

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Q. “A roof accumulates solar heat during the day and radiates the heat at night” is an example of which of the following way of heat transfer?

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Q. Which of the following is the application of direct heating in the dairy industry?

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Q. Heat exchanger works on which of the following principle?

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Q. If the product flow rate in a plant is to be increased from 10,000 l/h to 20,000 l/h, the heat exchanger must be extended to_______ the original size, provided the flow rates of the service media are also doubled, other factors being constant.

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Q. Calculate temperature change: 20,000 l/h cheese milk (V1) is to be heated from 4°C to 34°C by 30,000 l/h hot water (V2) at 50°C. Density (r) and specific heat (cp) for milk are about 1020 kg/m³ and 3.95 kJ/kg, K and for water 990 (at 50°C) and 4.18.

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Q. The temperature difference between the two liquids is best utilized if they flow in opposite directions through the heat exchanger. This type of flow is called ________

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Q. ______________ tells how much heat passes through 1 m² of the partition per 1°C of differential temperature.

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Q. Which among the following surface promote heat transfer?

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Q. _______ Heat exchanger is needed for cream than for milk, if capacities and temperature programs are identical.

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Q. Which of the following material is used for heat transfer in the dairy industry?

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Q. The rate of buildup of fouling does not depend on which of the following?

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Q. What is the method of using the heat of a hot liquid, such as pasteurized milk, to preheat cold incoming milk?

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Q. Zigzag tube in heat treatment is used for which purpose?

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Q. Which heat exchanger used for heating and cooling viscous, sticky and lumpy products?

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Q. PHE (Plate Heat Exchanger) is more efficient in terms of heat transfer than THE (Tubular Heat Exchanger).

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Q. Which of the following is/are the category of Tubular Heat exchanger?

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Q. Heat exchanger characterized by pack of stainless steel in a frame is ________

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Q. Scraped Heat exchanger has a ______ design.

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