Heat Transfer Quiz

What is heat transfer?

• Flow of thermal energy from low-temperature reservoir to high-temperature reservoir

• Flow of thermal energy irrespective of reservoir temperature

• None of the above

• Flow of energy in the form of heat from high-temperature reservoir to low-temperature reservoir

Which of the following is a method of heat transfer?

• Convection

• Radiation

• Conduction

• All of the mentioned

Heat transfer takes place according to which of the following law?

• Newton’s second law of motion

• First law of thermodynamics

• Newton’s law of cooling

• Second law of thermodynamics

Which of the following is the rate of heat transfer unit?

• Watt
  

• 
  Pascal
  
  

• Joule

• Newton

Which of the following is an example of steady-state heat transfer?

• Electric bulb cools down by the surrounding atmosphere
  
  

• Chilling effect of cold wind on a warm body

• Boilers and turbines
  

• Cooling of I.C engine

Which way is heat transfer believed to take place in a long, hollow cylinder that is kept at consistent but varied temperatures on its inner and outer surfaces?

• Unpredictable
  

• Radial only
  

• No heat transfer takes place
  

• Axial only

Which of the following is correct regarding one dimensional heat transfer?

• Steady – f (x, y, t), Unsteady – f (x)
  

• Steady – f (y, z), Unsteady – f (y)
  

• Steady – f (x, t), Unsteady – f (x)
  

• Steady – f (x), Unsteady – f (x, t)

A person prefers to sit by a fire during the cold winter months. Which of the following heat transfer types gives him with the most heat?

• Convection and radiation together
  

• Radiation will provide quick warmth
  

• If it is near the fire, convection sounds good

• Conduction from the fire

On which of the following, convective heat transfer coefficient doesn’t depend on?

• Orientation of solid surface
  

• Time
  

• Surface area
  

• Space

In liquids and gases, heat transmission is primarily caused by

• Convection
  

• Radiation
  

• Conduction
  

• Conduction as well as convection