Oct 03, 2019· Previous Year Questions Heat and Mass Transfer Objective Questions for IES, GATE and other Competitive Exams. Practice these questions before appearing for exam
A measure of the ability of a material to transfer heat. Given two surfaceson either side of the material with a temperature difference between them,the thermal conductivity is the heat energy transferred per unit time andper unit surface area, divided by the temperature difference.
Heat & Mass Transfer MCQ Questions Answers Mechanical Engineering 1) Which of the following material has least thermal conductivity at room temperature ? a) Human Skin b) Urethane c) Wood d) Brick 2)Heat transfer from one place to another takes place through a) conduction b) convection c) radiation d) all of above 3) Thermal ... Read more Heat & Mass Transfer MCQ Questions Answers ...
Oct 03, 2019· Correct Answer is D. Read More- Refrigeration and Air Conditioning Objective Questions. 12. Heisler charts are used to determine transient heat flow rate and temperature distribution when-. A. Solids possess an infinitely large thermal conductivity. B. Internal conduction resistance is large and the convective resistance is small.
Heat and Mass Transfer Objective Questions with Answers Mech Engg MCQ Edit Practice Test: Question Set - 11. 1. An electric cable of aluminium conductor (k = 240 W/mK) is to be insulated with rubber (k = 0.15 W/mK). The cable is to be located in air (h =
Then the average mass transfer coefficient for the plate is 2 × 10-2 m/s. 6) State with reasons whether the statement is true or false. According to the penetration theory, the mass transfer coefficient decreases if the exposure time of an eddy to the solute decreases. 7) Match the items in the list I with the appropriate items in List II.
Heat and Mass Transfer MCQ Objective Questions & Answers. Page 2. Heat and Mass Transfer MCQ Objective Questions & Answers. 6. In a concentric double-pipe heat exchanger where one of the fluids undergoes phase change A) The two fluids should flow opposite to each other
MCQ quiz on Heat Transfer multiple choice questions and answers on Heat Transfer MCQ questions quiz on Heat Transfer objectives questions with answer test pdf. Professionals, Teachers, Students and Kids Trivia Quizzes to test your knowledge on the subject.
Mass Transfer Questions and Answers Material Balance Concepts-Counter Current ... For the air-water system the simultaneous heat and mass transfer takes place. Therefore the Schmidt number (Sc) and Prandtl number (Pr) become equal. ... Learning Series Mass Transfer. To practice all areas of Mass Transfer for interviews, here is complete ...
Multiple Choice Questions for Heat and Mass Transfer MCQs for Heat and Mass Transfer | Practice Objective Questions for Heat and Mass Transfer
Sensible Heat Ratio - SHR - is defined as the sensible heat or cooling load divided by the total heat or cooling load. SHR = qs / qt = qs / (qs + ql) where SHR = sensible heat ratio (ratio of sensible heat load to total heat load) qs = sensible heat load (kW, Btu/hr) qt = total heat load - sensible heat and latent heat (kW, Btu/hr) ql = latent heat load (kW, Btu/hr)
Heat & Mass Transfer MCQ Question with Answer Heat & Mass Transfer MCQ with detailed explanation for interview, entrance and competitive exams. Explanation are given for understanding. Download Heat & Mass Transfer MCQ Question Answer PDF «
Modes of Heat Transfer- Conduction, Convection, Radiation Heat and Mass Transfer MCQ Objective Question and Answers Part 2 Heat and Mass Transfer MCQ Objective Question and Answers Part 3 Heat Transfer Analysis of Engine Cylinder Fins Having Triangular Shape Heat Transfer Online Notes , Objective and Interview Questions Thermodynamics Basic Objective Type Question And Answers Types Of Heat ...
Heat and Mass Transfer MCQ Objective Questions & Answers. Page 6. Heat and Mass Transfer MCQ Objective Questions & Answers. 26. In a solar collector, the unction of the transparent cover is to: A) Transmit solar radiation only B) Protect the collector from dust
Feb 05, 2021· A comprehensive database of more than 23 heat transfer quizzes online, test your knowledge with heat transfer quiz questions. Our online heat transfer trivia quizzes can be adapted to suit your requirements for taking some of the top heat transfer quizzes.
Heat and Mass Transfer MCQ Objective Questions & Answers 6. In a concentric double-pipe heat exchanger where one of the fluids undergoes phase change A) The two fluids should flow opposite to each other B) The two fluids should flow parallel to each other C) The two fluids should flow normal to each other D) The directions of flow of the ...
These Multiple Choice Questions on Heat Transfer from Physics will be helpful for degree, diploma and postgraduate engineering students. Lets explore MCQ on heat & mass transfer. Heat Transfer MCQ Set I. The capacity to do work is called: A. Heat. B. Energy. C. Work. D. none of the above. View Answer. B. Energy.
Click here for Past Mass Transfer Exams Example of multiple choice questions on a quiz. Mouse over the choice a, b, c, or d to check your answer. A. There is no mechanism for energy transfer by molecular interactions in convection. B. Heat is energy in transit solely as a result of a temperature difference.
WHY HEAT AND MASS TRANSFER Heat transfer and mass transfer are kinetic processes that may occur and be studied separately or jointly. Studying them apart is simpler, but both processes are modelled by similar mathematical equations in the case of diffusion and convection (there is no mass-transfer similarity to heat radiation), and it is thus more
2) In a heat exchanger, the inner diameter of a tube is 25 mm and its outer diameter is 30 mm. The overall heat transfer coefficient based on the inner area is 360 W/m 2.C. Then, the overall heat transfer coefficient based on the outer area, rounded to the nearest integer, is ___ W/m 2.C. 3) The one-dimensional unsteady heat conduction equation is
(a) heat transfer (b) mass transfer (c) change of temperature (d) thermodynamic state (e) change of pressure and volume. Ans: a. 90. For reversible adiabatic process, change in entropy is (a) maximum (b) minimum (c) zero (d) unpredictable (e) negative. Ans: c. 91. Isochoric process is one in which (a) free expansion takes place
Heat & Mass Transfer MCQ Question with Answer Heat & Mass Transfer MCQ with detailed explanation for interview, entrance and competitive exams. Explanation are given for understanding. Download Heat & Mass Transfer MCQ Question Answer PDF
Multiple Choice Questions and Answers (MCQs) on Heat and Mass Transfer 01. Unit of thermal conductivity in M.K.S. units is (A) K cal/kg m² °C (B) K cal m/hr m² °C (C) K cal/hr m² °C (D) K calm/hr °C Answer: Option B 02. Thermal diffusivity is a (A) Function of temperature (B) Physical property of a substance (C) Dimensionless parameter (D) All of these Answer: Option B 03.
Oct 03, 2019· Heat and Mass Transfer Objective Questions. These Heat and Mass Transfer Objective Questions are very important for the competitive exams like SSC JE, RRB, GATE, ISRO, DRDO, and all other competitive exams. All these Heat and Mass Transfer Objective Questions are from the previous years papers of one of the exams mentioned before.
Heat and Mass Transfer MCQ Objective Questions & Answers 11. In a heat exchanger, it is observed that ΔT 1 = ΔT 2 where ΔT 1 is the temperature difference between two single phase fluid streams at one end and ΔT 2 is the temperature difference at the other end.
Aug 12, 2015· Dear Readers, Welcome to Heat Transfer multiple choice questions and answers with explanation. These objective type Heat Transfer questions are very important for campus placement test, semester exams, job interviews and competitive exams like GATE, IES, PSU, NET/SET/JRF, UPSC and diploma. Specially developed for the Mechanical Engineering freshers and professionals, these model questions
9. The inside heat transfer co-efficient in case of turbulent flow of liquid in the tube side in a 1-2 shell and tube heat exchanger is increased by _____ times, when the number of tube passes is increased to 8. (A) 2 0.8 (B) 4 0.8 (C) 4 0.4 (D) 2 0.4
Downloded From : .EasyEngineering 3/28/2016 103 TOP Heat Transfer - Mechanical Engineering Multiple Choice Questions and Answers List 103 TOP Heat Transfer - Mechanical Engineering Multiple Choice Questions and Answers List Latest Heat Transfer Questions and Answers pdf free download 1.
Oct 03, 2019· 24. A steel plate of thickness 5 cm and thermal conductivity 20 W/mK is subjected to a uniform heat flux of 800 W/m² on one surface A and transfers heat by convection with a heat transfer coefficient of 80 W/m²K from the other surface B into the ambient air at 25 °C. The temperature of the surface B transferring heat by convection is A ...
Statement 2: Leaching involves both heat and mass transfer. a) True, False b) True, True c) False, False d) False, True Answer: c Clarification: Partition coefficient pertains to liquid-liquid extraction. Leaching involves mass transfer. 6. Which among the following factors does NOT affect extraction? a) Solubility of solute in the solvent
The water has large specific heat. The conductivity of ice is low. The water has large latent heat of fusion. The temperature of the earth at the bottom of the lake is high. Answer (b). 6. A cooking pot is coated black because -. black substances absorb more heat. black substances reflect more heat.
Heat and Mass Transfer MCQ Objective Questions & Answers. Page 5. Heat and Mass Transfer MCQ Objective Questions & Answers. 21. Consider the following statements about thermal conductivity: 1) Thermal conductivity decreases with increasing molecular weight
Heat transfer by convection is given by Newtons law of cooling . Q= h A ( T s-T inf) Where A- Area exposed to heat transfer in . h- Heat transfer coefficient in W/ K . T- Temperature of the surface and fluid in K. 8. What is meant by lumped heat analysis?
Sep 20, 2019· To understand the mechanisms of heat transfer under steady and transient. To understand the concepts of heat transfer through extended; To learn the thermal analysis and sizing of heat exchangers and to understand the basic concepts of mass (Use of standard HMT data book permitted). UNIT I CONDUCTION
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