Time Left - 05:00 mins

Gearup-JE'19: Heat Transfer Quiz-4

Attempt now to get your rank among 1162 students!

Question 1

Above 120 ° which of the following gives maximum heat transfer rate

Question 2

On increasing the heat transfer coefficient then the efficiency and the effectiveness of the fin respectively are

Question 3

A hot body at a temperature of 5000 °C emits radiation at a wavelength of 0.5 μm. A furnace at 500 °C will emit a radiation of wavelength______.

Question 4

As the wave length Increases, the monochromatic emissivity of the grey body

Question 5

Heat is lost from a 150 mm diameter pipe vertically placed in ambient at 30 °C. The height of the cylinder is 200 mm and thermal conductivity of air is 0.04W/mK. If the Nusselt number is 30, then the heat transfer coefficient will be

Question 6

The effect of forced convection can be neglected if

Question 7

In a parallel flow heat exchanger, the inside heat transfer coefficient is 180W/ outside heat transfer coefficient is 250W/. If the fouling factor for both inside and outside wall is 0.003. Then overall heat transfer coefficient for the system will be

Question 8

Arrange in increasing order of thermal conductivity of the following materials
a) Silver
b) Copper
c) Aluminum
d) Steel
  • 1162 attempts
  • 7 upvotes
  • 4 comments
Apr 30ESE & GATE ME