TEMPERATURE MEASUREMENT

Question 1

measurement is the process of determining the degree of hotness or
coldness of a substance, object, or environment

Answer 1

Temperature

Question 2

Temperature is typically expressed in units like

Answer 2

Celsius, Farenheit or Kelvin

Question 3

It involves using instruments such as ________ to quantify the thermal state of a system or material

Answer 3

thermometers,
thermocouples, or infrared sensors

Question 4

______ are systems of measurement used to quantify temperature,
each defined by specific reference points and intervals.

Answer 4

Temperature scales

Question 5

Water freezes at ___ and boils at ___
under standard conditions

Answer 5

0°C , 100°C

Question 6

What temperature scale is widely used globally?

Answer 6

Celsius

Question 7

What temperature scale is predominantly used in United States?

Answer 7

Fahrenheit

Question 8

What is the temperature scal e used in scientific context, particulary in physics?

Answer 8

Kelvin

Question 9

What temperature scale have no negative values?

Answer 9

Kelvin

Question 10

What temperature scale is mainly used in engineering fields in United States and is based on the Fahrenheit Scale?

Answer 10

Rankine

Question 11

What is a type of temperature measurement device
that uses the principle of thermal expansion to measure temperature

Answer 11

Bimetallic Thermometer

Question 12

How does the bimetallic thermometer work?

Answer 12

It consists of two different metals with different coefficients of thermal
expansion bonded together in the form of a strip. When the temperature
changes, the metals expand or contract at different rates, causing the
bimetallic strip to bend. This bending is then translated into a
temperature reading.

Question 13

What is is one of the most common temperature measuring devices.

Answer 13

Liquid-in-Glass Thermometer

Question 14

How does the liquid-in glass thermometer works?

Answer 14

Both the liquid and glass expand on heating and their differential expansion is
used to indicate the temperature.

Question 15

It is one of the most economical, versatile and widely used devices in
industrial temperature measurements.

Answer 15

Pressure Thermometer

Question 16

What pressure instrument is based on the principle of liquid expansion due to an
increase in the pressure in a given volume of the temperature measuring system.

Answer 16

Pressure thermometer

Question 17

What thermometers are low in cost, self-operated type, rugged in
construction, with no maintenance expenses, stable in operation and accurate to positive negative 1 ºC.

Answer 17

Fluid expansion thermometers

Question 18

This type of instrument has a linear scale. It may be used for temperature ranging - 25 to 550 ºC.

Answer 18

Mercury-in-steel Thermometer

Question 19

The total expansion of mercury is dependent not only on the _______ but also on the ____ which
subjects the system to ambient temperature errors.

Answer 19

bulb temperature, temperatures of capillary tube and Bourdon tube

Question 20

How to reduce the error in Mercury -in-steel thermometer?

Answer 20

is obtained by making the
sensing bulb volume greater than that of capillary and Bourdon tubes which will increase the thermal capacity and the thermal lag.

Question 21

It is a thermometer that uses a pressure
gauge to measure the vapour pressure of a liquid?

Answer 21

Vapour Pressure Thermometer

Question 22

What is basically handheld device and uses gas having large entropy wherein the pressure of the gas is converted to temperature by means of a bourdon
gauge which represents temperature over
calibrated scale having cramped rulings?

Answer 22

Vapour Pressure Thermometer

Question 23

It is filled partly with liquid and partly with vapour of the same liquid so that there is a liquid-vapour interface in the bulb.

Answer 23

Vapour Pressure Thermometer

Question 24

This device follows one of Dalton’s Laws of Partial Pressure

Answer 24

Vapour Pressure Thermometer

Question 25

What does Dalton’s Laws of Partial Pressure tells?

Answer 25

“If both liquid and vapour are present, there is only one saturation pressure corresponding to a given temperature.”

Question 26

This uses an inert gas, usually nitrogen and follows the principle: the pressure of the gas increases with the increase in temperature at constant volume?

Answer 26

Constant Volume Thermometer

Question 27

This thermometer can operate over a range of -130 to 540 ºC with linear ranges as large as 500 ºC

Answer 27

Constant Volume Thermometer

Question 28

It’s main disadvant age is that the pressure developed for a given temperature change is smaller and further ambient temperature is more difficult to measure

Answer 28

Constant Volume Thermometer

Question 29

Resistance thermometers have generally employed a metallic conductor in the form of a wire which varies in electrical conductivity or resistance as its temperature varies.

Answer 29

Electrical Resistance Thermometers

Question 30

How can the temperature of the substance can be determined using electrical resistance thermometers?

Answer 30

By exposing a wire to heat from a substance, the temperature of which is to be measured, and measuring the electrical resistance of the wire

Question 31

It is a temperature measuring device which is used to measure high accuracy temperature.

Answer 31

Metallic Resistance Thermometers / Resistance-Temperature Detectors (RTDs)

Question 32

How Metallic Resistance Thermometers / Resistance-Temperature Detectors (RTDs) determines the temperature?

Answer 32

by measuring the resistance of pure electrical wire. It relies on a linear increase in resistance of metal wire (usually platinum) with increase in temperature.

Question 33

They are tubular fittings used to protect temperature sensors installed in industrial processes

Answer 33

Thermowell

Question 34

It consists essentially of two strips or wires made of different metals/ conductors and joined at one end forming electrical junctions at differing temperatures.

Answer 34

Thermo - Electric Sensors / Thermocouple

Question 35

What does a thermocouple produces as a result of thermoelectric effect?

Answer 35

temperature-dependent voltage

Question 36

What is interpreted as a measure of temperature using thermo-electric sensors?

Answer 36

Voltage

Question 37

An apparatus including a contact on a substrate, a dielectric material overlying the contact, a phase change element overlying the dielectric material on a substrate, and a heater element disposed in the dielectric material and coupled to the contact and the phase change element, wherein a portion of the dielectric material comprises a thermal conductivity less than silicon dioxide.

Answer 37

Semiconductor Resistance Sensor (Thermistor)

Question 38

The thermometer comprises a quartz resonator provided with electrodes disposed on the margins of the upper and lower main surfaces, parallel to the length direction

Answer 38

Quartz Thermometer

Question 39

word pyrometer comes from the Greek word for _____, and meter meaning _____

Answer 39

fire, to measure

Question 40

It is a type of remote-sensing thermometer used to measure the temperature of a surface

Answer 40

pyrometer

Question 41

The ___ is ideal for taking accurate measurements of temperature without contact

Answer 41

pyrometer

Question 42

It is a device used to determine the electron temperature, electron density, and electric potential of a plasma

Answer 42

Langmuir Probe

Question 43

is one of the most common and widely used plasma diagnostics and measures parameters in the bulk of the plasma.

Answer 43

Langmuir Probe

Question 44

is a non-contacting electronic instrument which is used to sense certain characteristics of its surroundings by either emitting and/or detecting infrared radiation

Answer 44

Infrared Sensors