All Courses
Get the App Signup / Login
Sign in Open App
Mechanical Engineering Exam  >  Mechanical Engineering Tests  >  Heat Transfer  >  Test: Nucleate Boiling - Mechanical Engineering MCQ

Test: Nucleate Boiling - Mechanical Engineering MCQ


Test Description

10 Questions MCQ Test Heat Transfer - Test: Nucleate Boiling

Test: Nucleate Boiling for Mechanical Engineering 2024 is part of Heat Transfer preparation. The Test: Nucleate Boiling questions and answers have been prepared according to the Mechanical Engineering exam syllabus.The Test: Nucleate Boiling MCQs are made for Mechanical Engineering 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Nucleate Boiling below.
Solutions of Test: Nucleate Boiling questions in English are available as part of our Heat Transfer for Mechanical Engineering & Test: Nucleate Boiling 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: Nucleate Boiling | 10 questions in 10 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: Nucleate Boiling - Question 1
Save

Reynolds number is replaced by a modulus significant of the agitation of the fluid particles in nucleate boiling. Such a dimensionless modulus is defined by the relation

Where, D b is the average bubble diameter, G b is the mass velocity of the bubble per unit area and δ f is the fluid viscosity

Detailed Solution for Test: Nucleate Boiling - Question 1

This nucleate boiling regime is of great importance because of the very high heat fluxes possible with moderate temperature differences.

Test: Nucleate Boiling - Question 2
Save

The bubble diameter has been expressed by Fritz as

Where, C d is a constant, σ is surface tension of the liquid and β is the bubble contact angle measured through liquid in degrees

Detailed Solution for Test: Nucleate Boiling - Question 2

C d is a constant which has been evaluated as 0.0148 for hydrogen and water bubbles.

1 Crore+ students have signed up on EduRev. Have you? Download the App
Test: Nucleate Boiling - Question 3
Save

What is the value of surface fluid constant for water-copper combination?

Detailed Solution for Test: Nucleate Boiling - Question 3

The surface fluid regime is of great importance because of the very high heat fluxex possible with moderate temperature differences.

Test: Nucleate Boiling - Question 4
Save

What is the value of surface fluid constant for water-brass combination?
Detailed Solution for Test: Nucleate Boiling - Question 4

For H2O and Brass combination, this value must lie between 0.0056 to 0.00062.

Test: Nucleate Boiling - Question 5
Save

Spherical bubbles of 3 mm diameter are observed in the bulk fluid boiling of water at standard atmospheric pressure. Assuming pure water vapor in the bubble and vapor pressure equal to 101.325 k N/m2, calculate the temperature of the vapor
Detailed Solution for Test: Nucleate Boiling - Question 5

T v – T sat = (2 σ/r – p g) R v T V2/p v h f g.

Test: Nucleate Boiling - Question 6
Save

An electric wire of 1.25 mm diameter and 250 mm long is laid horizontally and submerged in water at 7 bar. The wire has an applied voltage of 2.2 V and carries a current of 130 amperes. If the surface of the wire is maintained at 200 degree Celsius, make calculations for the heat flux
Detailed Solution for Test: Nucleate Boiling - Question 6

Q= V I = 286 W and A = 9.81 * 10 -4 m2. Therefore heat flux = Q/A.

Test: Nucleate Boiling - Question 7
Save

Consider the above problem, find the boiling heat transfer coefficient
Detailed Solution for Test: Nucleate Boiling - Question 7

Q = h A d t. So, h = 8330 W/m2 K.

Test: Nucleate Boiling - Question 8
Save

Which of the following parameters affect burnout heat flux in the nucleate boiling region
(i) Heat of evaporation
(ii) Temperature difference
(iii) Density of vapor
(iv) Density of liquid
(v) Surface tension at the vapor-liquid interface
Mark the correct answer from the codes indicated below
Detailed Solution for Test: Nucleate Boiling - Question 8

Acc to Zuber relation, burn out (Q/A) = 0.18 p g h f g [p (p f – p g)/p g 2] 0.25 [p f/p g + p f] 0.5.

Test: Nucleate Boiling - Question 9
Save

All the following statements are correct, except
Detailed Solution for Test: Nucleate Boiling - Question 9

A rough surface gives a better heat transmission than when the surface is either smooth or has been coated to weak its tendency to get wetted.

Test: Nucleate Boiling - Question 10
Save

Milk spills over when it is boiled in an open vessel. The boiling of milk at this instant is referred to as
Detailed Solution for Test: Nucleate Boiling - Question 10

This is an application of sub-cooled boiling.

57 videos|77 docs|86 tests
Join Course
Information about Test: Nucleate Boiling Page
In this test you can find the Exam questions for Test: Nucleate Boiling solved & explained in the simplest way possible. Besides giving Questions and answers for Test: Nucleate Boiling, EduRev gives you an ample number of Online tests for practice

Top Courses for Mechanical Engineering

57 videos|77 docs|86 tests
Join Course
Download as PDF

Top Courses for Mechanical Engineering

Important Questions for Nucleate Boiling

Find all the important questions for Nucleate Boiling at EduRev.Get fully prepared for Nucleate Boiling with EduRev's comprehensive question bank and test resources. Our platform offers a diverse range of question papers covering various topics within the Nucleate Boiling syllabus. Whether you need to review specific subjects or assess your overall readiness, EduRev has you covered. The questions are designed to challenge you and help you gain confidence in tackling the actual exam. Maximize your chances of success by utilizing EduRev's extensive collection of Nucleate Boiling resources.

Nucleate Boiling MCQs with Answers

Prepare for the Nucleate Boiling within the Mechanical Engineering exam with comprehensive MCQs and answers at EduRev. Our platform offers a wide range of practice papers, question papers, and mock tests to familiarize you with the exam pattern and syllabus. Access the best books, study materials, and notes curated by toppers to enhance your preparation. Stay updated with the exam date and receive expert preparation tips and paper analysis. Visit EduRev's official website today and access a wealth of videos and coaching resources to excel in your exam.

Online Tests for Nucleate Boiling Heat Transfer

Practice with a wide array of question papers that follow the exam pattern and syllabus. Our platform offers a user-friendly interface, allowing you to track your progress and identify areas for improvement. Access detailed solutions and explanations for each test to enhance your understanding of concepts. With EduRev's Online Tests, you can build confidence, boost your performance, and ace Nucleate Boiling with ease. Join thousands of successful students who have benefited from our trusted online resources.
© EduRev
Education Revolution
Follow Us
Signup to see your scores go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup