Chemical Engineering  >  Topicwise Question Bank for Mechanical Engineering  >  Test: Basic Concepts of Heat Transfer - 2 Download as PDF

Test: Basic Concepts of Heat Transfer - 2


Test Description

10 Questions MCQ Test Topicwise Question Bank for Mechanical Engineering | Test: Basic Concepts of Heat Transfer - 2

Test: Basic Concepts of Heat Transfer - 2 for Chemical Engineering 2023 is part of Topicwise Question Bank for Mechanical Engineering preparation. The Test: Basic Concepts of Heat Transfer - 2 questions and answers have been prepared according to the Chemical Engineering exam syllabus.The Test: Basic Concepts of Heat Transfer - 2 MCQs are made for Chemical Engineering 2023 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Basic Concepts of Heat Transfer - 2 below.
Solutions of Test: Basic Concepts of Heat Transfer - 2 questions in English are available as part of our Topicwise Question Bank for Mechanical Engineering for Chemical Engineering & Test: Basic Concepts of Heat Transfer - 2 solutions in Hindi for Topicwise Question Bank for Mechanical Engineering course. Download more important topics, notes, lectures and mock test series for Chemical Engineering Exam by signing up for free. Attempt Test: Basic Concepts of Heat Transfer - 2 | 10 questions in 30 minutes | Mock test for Chemical Engineering preparation | Free important questions MCQ to study Topicwise Question Bank for Mechanical Engineering for Chemical Engineering Exam | Download free PDF with solutions
1 Crore+ students have signed up on EduRev. Have you?
Test: Basic Concepts of Heat Transfer - 2 - Question 1

Thermal conductivity of water in general with rise in temperature

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

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

Thermal conductivity of air with rise in temperature

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

Test: Basic Concepts of Heat Transfer - 2 - Question 3

Heat is mainly transferred by conduction, convection and radiation in

Detailed Solution for Test: Basic Concepts of Heat Transfer - 2 - Question 3

Because for radiation to be comparable the magnitude of temperature difference should be large enough, Convection & conduction is also predominant in boiler furnace.

Test: Basic Concepts of Heat Transfer - 2 - Question 4

Heat conduction in gases is due to

Test: Basic Concepts of Heat Transfer - 2 - Question 5

Heat transfer by molecular collision in

Test: Basic Concepts of Heat Transfer - 2 - Question 6

Arrangement of silver, air, aluminium and lead in order of increasing thermal conductivity at room temperature yields

Detailed Solution for Test: Basic Concepts of Heat Transfer - 2 - Question 6

According to their thermal conductivity for Air, k = 0.022 W/mK
for Aluminium, k = 205 W/mK
for Silver, k = 407 W/mK
Hence correct sequence is
Air, Lead, Aluminium, Silve

Test: Basic Concepts of Heat Transfer - 2 - Question 7

Metals are good conductors of heat because of

Detailed Solution for Test: Basic Concepts of Heat Transfer - 2 - Question 7
  • The thermal conductivity of the liquids is more than the gasses and the metals have the highest.
  • Metals have valence electrons that are free to move around the surface. When heated, these free electrons collide with each other and the majority of the Kinetic energy is transformed into heat energy, making metals a good conductor of heat.
  • In the gaseous state, the molecules of a substance are spaced relatively far away, and their motion is random. This means that energy transfer by the molecular impact is much slower than in the case of a liquid, in which the motion is still random but in liquids, the molecules are more closely packed. The same is true concerning the difference between the thermal conductivity of the liquid and solid phases.
Test: Basic Concepts of Heat Transfer - 2 - Question 8

Choose the correct statement about thermaf conductivity

Detailed Solution for Test: Basic Concepts of Heat Transfer - 2 - Question 8

Due to increase in lattice vibratioh the thermal conductivity of metals decreases with increase in temperature.

Test: Basic Concepts of Heat Transfer - 2 - Question 9

Cork is used as a good insulator

Test: Basic Concepts of Heat Transfer - 2 - Question 10

In which one of the following materials, is the heat energy propagation minimum due to conduction heat transfer

Detailed Solution for Test: Basic Concepts of Heat Transfer - 2 - Question 10

Since thermal conductivity of air is minimum among the given material hence heat transfer will be minimum in air.

Use Code STAYHOME200 and get INR 200 additional OFF
Use Coupon Code
Information about Test: Basic Concepts of Heat Transfer - 2 Page
In this test you can find the Exam questions for Test: Basic Concepts of Heat Transfer - 2 solved & explained in the simplest way possible. Besides giving Questions and answers for Test: Basic Concepts of Heat Transfer - 2, EduRev gives you an ample number of Online tests for practice