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Mechanical Engineering Exam  >  Mechanical Engineering Tests  >  Heat Transfer  >  Test: Types of Convection - Mechanical Engineering MCQ

Test: Types of Convection - Mechanical Engineering MCQ


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10 Questions MCQ Test Heat Transfer - Test: Types of Convection

Test: Types of Convection for Mechanical Engineering 2024 is part of Heat Transfer preparation. The Test: Types of Convection questions and answers have been prepared according to the Mechanical Engineering exam syllabus.The Test: Types of Convection MCQs are made for Mechanical Engineering 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Types of Convection below.
Solutions of Test: Types of Convection questions in English are available as part of our Heat Transfer for Mechanical Engineering & Test: Types of Convection solutions in Hindi for Heat Transfer course. Download more important topics, notes, lectures and mock test series for Mechanical Engineering Exam by signing up for free. Attempt Test: Types of Convection | 10 questions in 20 minutes | Mock test for Mechanical Engineering preparation | Free important questions MCQ to study Heat Transfer for Mechanical Engineering Exam | Download free PDF with solutions
Test: Types of Convection - Question 1
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Conduction plus fluid flow in motion is known as

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It is convection i.e. conduction plus some velocity. It is the process of energy transport affected by the mixing of a fluid medium.

Test: Types of Convection - Question 2
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How many types of convection are there?

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It is of three types i.e. forced convection, natural convection and mixed convection.

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Test: Types of Convection - Question 3
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Which of the following heat flow situations pertains to free or natural convection?

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Cooling of billets in atmosphere is both free and natural convection.

Test: Types of Convection - Question 4
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Mark the system where heat transfer is given by forced convection
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If the fluid motion involve in the process is induced by some external means then it is called forced convection.

Test: Types of Convection - Question 5
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Forced convection in a liquid bath is caused by
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If the fluid motion involve in the process is induced by some external means then it is called forced convection.

Test: Types of Convection - Question 6
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A finned tube hot water radiator with a fan blowing air over it is kept in rooms during winter. The major portion of the heat transfer from the radiation is due to
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Convection is a process in which thermal energy is transferred between solid and fluid flowing through it.

Test: Types of Convection - Question 7
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A body cooling from 80 degree Celsius to 70 degree Celsius takes 10 minutes when left exposed to environmental conditions. If the body is to cool further from 70 degree Celsius to 60 degree Celsius under the same external conditions, it will take
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Q = h A (t b – t a). Apparently the cooling depends upon the same temperature difference.

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On a summer day, a scooter rider feels more comfortable while on the move than while at a stop light because
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The situation corresponds to forced convection when the scooter is in motion and the convective heat transfer coefficient for forced convection is greater than that for free convection.

Test: Types of Convection - Question 9
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What is the value of convective coefficient of oil in case of forced convection?
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In forced convection, the flow of fluid is caused by a pump, fan or by atmospheric winds. Convection mechanism involving phase changes leads to the important fields of boiling and condensation.

Test: Types of Convection - Question 10
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A sphere, a cube and a thin circular plate, all made of the same material and having the same mass are initially heated to the temperature of 250 degree Celsius. When left in air at room temperature, what will be their response to cooling?
Detailed Solution for Test: Types of Convection - Question 10

Q = h A (T – t). Here cooling depends upon the surface area of the body.

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