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Test: Basic Concepts of Heat Transfer - 1


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10 Questions MCQ Test Heat Transfer | Test: Basic Concepts of Heat Transfer - 1

Test: Basic Concepts of Heat Transfer - 1 for Chemical Engineering 2022 is part of Heat Transfer preparation. The Test: Basic Concepts of Heat Transfer - 1 questions and answers have been prepared according to the Chemical Engineering exam syllabus.The Test: Basic Concepts of Heat Transfer - 1 MCQs are made for Chemical Engineering 2022 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Basic Concepts of Heat Transfer - 1 below.
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Test: Basic Concepts of Heat Transfer - 1 - Question 1

Which of the following material has least thermal conductivity at room temperature?

Detailed Solution for Test: Basic Concepts of Heat Transfer - 1 - Question 1

Test: Basic Concepts of Heat Transfer - 1 - Question 2

A closed container filled with hot coffee in a plastic flask is in a room whose air and walls are at a fixed temperature. What are the possible modes of heat transfer process that contribute to cooling of coffee?

Detailed Solution for Test: Basic Concepts of Heat Transfer - 1 - Question 2


Hot coffee is separated from its cooler surroundings by a plastic flask, an air space, and a plastic cover. So all modes of heat transfer.

Test: Basic Concepts of Heat Transfer - 1 - Question 3

A satellite float in deep space with very high velocity. It will continuously lose heat by

Test: Basic Concepts of Heat Transfer - 1 - Question 4

Consider the following statements pertaining to heat transfer processes:
1. Heat transfer is directly linked with the transport of medium itself, i.e., there is actual motion of heated particles during convection.
2. The material medium between the heat source and receiver is not affected during the process of heat transmission by radiation.
3. Heat transfer in liquids and gases is essentially due to radiation.
4. In gases and liquids, conduction is due to the collisions and diffusion of the molecules during their random motion.
Select the correct answer:

Detailed Solution for Test: Basic Concepts of Heat Transfer - 1 - Question 4

Heat transfer in liquids and gases is essentially due to convection.

Test: Basic Concepts of Heat Transfer - 1 - Question 5

All the three modes of heat transfer are involved in

Test: Basic Concepts of Heat Transfer - 1 - Question 6

The essential condition for the transfer of heat from one body to another is.

Test: Basic Concepts of Heat Transfer - 1 - Question 7

Consider the following statements:
1. The thermal conductivity of a material is it’s ability to conduct heat.
2. The thermal conductivity can be defined as the rate of heat transfer through a unit thickness of the material per unit area.
3. In solids, heat conduction is due to lattice vibrational energy as well as energy transported via free flow of electrons.
4. Convection involves combined effect of conduction and fluid motion.
Which of the above statements are valid?

Detailed Solution for Test: Basic Concepts of Heat Transfer - 1 - Question 7

Thermal conductivity can be defined as the rate of heat transfer through a unit thickness of material per unit area per unit temperature difference.

Test: Basic Concepts of Heat Transfer - 1 - Question 8

Thermal conductivity of wood depends on

Test: Basic Concepts of Heat Transfer - 1 - Question 9

Temperature of steam at around 540°C can be measured by

Test: Basic Concepts of Heat Transfer - 1 - Question 10

Cork is a good insulator because it has

Detailed Solution for Test: Basic Concepts of Heat Transfer - 1 - Question 10

Thermal insulation materials have low thermal conductivity. As cork is a porous body, the trapped air in voids inhibits heat flow.

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