Related Questions

In a parallel flow heat exchanger, if the outlet temperature of hot and cold fluids are the same, then the log mean temperature difference (LMTD) is
A Minimum
B Maximum
C Zero
D Infinity
Which of the following thermocouples has the widest temperature measurement range?
A Iron-constantan
B Chromel-alumel
C Copper-constantan
D Platinum-platinum/rhodium
Which of the following thermocouples can measure the maximum temperature?
A Platinum-rhodium
B Tungsten-molybdenum
C Chromel-alumel
D Iron-constantan
Which of the following thermocouples has the least temperature measurement range?
A Copper-constantan
B Chromel-alumel
C Platinum-platinum/rhodium
D Iron-constantan
Thermal well made of __________ gives the fastest speed of response, while measuring temperature by thermocouples.
A Steel
B Vycor (a glass)
C Nichrome
D Inconel
All the thermocouples used for temperature measurement use dissimilar metal
A Strips
B Bars
C Wires
D Beads
The thermal emf-temperature relationship of most thermocouples is
A Linear
B Parabolic
C Exponential
D Square root
In case of parallel flow heat exchanger, the lowest temperature theoretically attainable by the hot fluid is __________ the outlet temperature of the cold fluid.
A Equal to
B More than
C Less than
D Either more or less than (depending upon the fluid)
Invar used in thermocouples is an alloy of nickel and
A Iron
B Copper
C Chromium
D Lead
The sum of the currents into a junction is equal to the sum of the currents out of that junction.
A True
B False

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