Heat Exchanger MCQ Question 11. Download Solution PDF. In a condenser of a power plant, the steam condenses at a temperature of 60 o C. The cooling water enters at 30 o C and leaves at 45 o C. The logarithmic mean temperature difference (LMTD) of the condenser is. 16.2°C. 21.6°C. 30°C. 37.5°C. Heat Transfer Question and Answer 1. Thermal diffusivity is a dimensionless parameter function of temperature used as mathematical model a physical property of the material 2. Which of the following has maximum value of thermal conductivity aluminium steel brass copper 3. Which of the following is the case of heat transfer by radiation Answer : 1. Question 6 : Controlling heat transfer film co-efficient is the one, which offers _____ resistance to heat transfer. no; the least; the largest; lower; Answer : 3. Question 7 : The heat flux (from outside to inside) across an insulating wall with thermal conductivity, K= 0.04 W/m.°K and thickness 0.16m is 10 W/m 2. The temperature Mechanical Engineering MCQS from FreePDfbook.com HEAT TRANSFER Questions Answers 1. Unit of thermal conductivity in M.K.S. units is (a) kcal/kg m2 °C (b) kcal-m/hr m2 °C (c) kcal/hr m2 °C (d) kcal-m/hr °C (e) kcal-m/m2 °C. Ans: b 2. Unit of thermal conductivity in S.I. units is (a) J/m2 sec (b) J/m °K sec (c) W/m °K (d) (a) and (c) above To get more questions visit other sections. Heat and Mass Transfer - Section 1 Heat and Mass Transfer - Section 3 Page 4 IC Engine- Forced Convection Air Preheaters- Air preheaters use the hot exhaust gas from the furnace to heat the incoming combustion air Heating of building in winter-Conduction is heat traveling through a solid material. Answer: A heat exchanger is a device that transfers heat from one fluid to the others. A condenser is simply a heat exchanger. It compresses refrigerants into a hot gas to then condense them into a liquid. Majorly condenser is used to cool the required vapor and heat exchanger is used to heat the required liquid. fffff1. 300+ [UPDATED] Thermal Engineer Interview Questions 1. Define Heat Transfer? Heat transfer can be defined as the transmission of energy from one region to another due to temperature difference. 2. What Are The Modes Of Heat Transfer? Conduction Convection Radiation. Project Management Interview Questions 3. What Is Conduction? D determined by the time taken to reach 100°C from 0°C. View Answer. 45 The concept of overall coefficient of heat transfer is used in heat transfer problems of. A conduction. B convection. C radiation. D conduction and comte_ction. View Answer. 46 In heat transfer, conductance equals conductivity (kcal/hr/sqm/°C/cm) divided by. Heat And Mass Transfer Questions Answers Author: webdisk.meu.edu.jo-2022-07-23T00:00:00+00:01 Subject: Heat And Mass Transfer Questions Answers Keywords: heat, and, mass, transfer, questions, answers Created Date: 7/23/2022 11:55:29 AM April 15th, 2018 - Home » Heat Transfer Objective type Questions and Answers » 103 TOP Heat Transfer Latest Heat Transfer Questions and Answers pdf free download 1' 'MEO CLASS 4 ORAL QUESTIONS WITH ANSWERS APRIL 29TH, 2018 - CLASS4EXAM COM REGISTER YOURSELF IN OUR FORUMS 1 WHAT IS OVALITY OF AUXILIARY ENGINE CRANK PIN COMBINED EFFECT The topics that are covered in this PDF containing Heat-Transfer Previous Year GATE Solved Questions are: Modes of heat transfer; one dimensional heat conduction, resistance concept and electrical analogy