Temperature Heat Sensor

What is absolute zero in Celcius?

• -273.1

• 273.1

• 0

• 100

Which one is incorrect about heat

• a form of energy

• Joules (SI) are used to define heat energy

• heat is measured by temperature

Specific heat is

• the quantity of temperature required to raise energy of a given weight of a material by 1J

• the quantity of heat energy required to raise the temperature

  of a given weight of a material by 1°

What is conduction

• the transfer of heat due to motion of elevated temperature particles in a material (liquid and gases)

• the flow of heat through a material

Which one in the following is not used as temperature measuring device

• Thermometer

• Resistance temperature device (RTD)

• Thermal spring

• Pressure spring thermometer

Below is the application consideration except

• Size

• Range and accuracy

• Cost

• Thermal time constant

Which one is the characteristics of thermocouple sensor

• Low cost

• Slow response

• Poor linearity

What is pyrometer

• a number of thermocouples connected in series, to increase the

  sensitivity and accuracy by increasing the output voltage when measuring low temperature differences

• devices that measure temperature by sensing the heat radiated

  from a hot body through a fixed lens that focuses the heat energy on to a thermopile

Semiconductor is temperature sensing

• True

• False

You can check your body temperature using thermometer

• True

• False