Online Chemical Engineering Test - Heat Transfer Test 2
Instruction:
- This is a FREE online test. Beware of scammers who ask for money to attend this test.
- Total number of questions: 20.
- Time allotted: 30 minutes.
- Each question carries 1 mark; there are no negative marks.
- DO NOT refresh the page.
- All the best!
Marks : 2/20
Total number of questions
20
Number of answered questions
0
Number of unanswered questions
20
Test Review : View answers and explanation for this test.
1.
Fourier's law applies to the heat transfer by
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2.
With the increase of temperature, the Col-burn jH factor
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3.
Pick out the wrong statement.
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4.
Shell side pressure drop in a shell and tube heat exchanger does not depend upon the
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5.
Film boiling is usually not desired in commercial equipments, because
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6.
Pick out the wrong statement.
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7.
A hot liquid is kept in a big room. The logorithm of the numerical value of the temperature difference between the liquid and the room is plotted against time. The plot will be very nearly a/an
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8.
In thermal radiation for a black body (where, ε is emissivity and α is absorptivity)
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9.
Choose the correct equation.
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10.
Electro-magnetic spectrum range, which is important for radiation varies from __________ microns.
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11.
The ratio of velocity head to tube side return loss in case of a multipass shell and tube heat exchanger is
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12.
__________ paint has the minimum absorption co-efficient.
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13.
Thermal conductivities of most of the liquids __________ with rise in temperature.
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14.
1000 Kg of liquid at 30°C in a well stirred vessel has to be heated to 120°C, using immersed coils carrying condensing steam at 150°C. The area of the steam coils is 1.2 m2 and the overall heat transfer co-efficient to the liquid is 1500 W/m2.°C. Assuming negligible heat loss to the surrounding and specific heat capacity of the liquid to be 4 kJ/kg.°C, the time taken for the liquid to reach desired temperature will be
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15.
What is the emissivity of a black body ?
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16.
Loss of heat from untagged steam pipe to the ambient air is by
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17.
The unit of conductance in SI unit is
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18.
In the free convection regime of pool boiling, the heat flux is proportional to
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19.
Low thermal conductivity of heat insulating materials is due to its
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20.
In case of a multipass shell and tube heat exchanger, the temperature drop in the fluid
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