Measurements And Instrumentation! 11th Grade Trivia Quiz

The given answer "All of the above" is correct because an instrument is capable of performing all the mentioned tasks, which include reading time, recording temperature, and recording speed. This implies that the instrument has multiple functions and capabilities to measure and record various parameters.

The correct answer is thermocouple because a thermocouple is a device that is used to measure temperature by utilizing the principle of thermoelectric effect. It consists of two different metals joined together at one end, and when there is a temperature difference between the two junctions, it generates a voltage that is proportional to the temperature difference. This voltage can then be measured and used to determine the temperature.

The output of a thermocouple is typically measured in millivolts (mV). Thermocouples generate a voltage signal based on the temperature difference between two junctions. This voltage signal is proportional to the temperature being measured. Therefore, the correct answer is mV, as it represents the unit of measurement for the output of a thermocouple.

The output of a thermistor is measured in ohms. A thermistor is a type of resistor that changes its resistance with a change in temperature. As the temperature increases, the resistance of the thermistor decreases, and as the temperature decreases, the resistance increases. Therefore, the output of a thermistor is given in ohms, which is a unit of electrical resistance.

The correct answer is Thermister. A thermister is a type of temperature sensor that is used to measure temperature. It is made of a semiconductor material that changes its resistance with temperature. This change in resistance can be measured and used to determine the temperature. Unlike a thermocouple, which uses the principle of the Seebeck effect to measure temperature, a thermister relies on the change in resistance. A thermometer, on the other hand, is a device used to measure temperature but it can be based on various principles such as expansion of liquids or gases. Therefore, the correct answer in this case is thermister.

A thermistor is a non-linear device. Unlike linear devices, the resistance of a thermistor does not change linearly with temperature. Instead, it exhibits a non-linear relationship between resistance and temperature. As the temperature increases, the resistance of a thermistor decreases exponentially. This non-linear behavior makes thermistors suitable for temperature measurement and control applications where precise and accurate temperature sensing is required.

A thermocouple is a linear device because it produces a linear output voltage in response to a linear change in temperature. The voltage generated by a thermocouple is directly proportional to the temperature difference between the two junctions of the thermocouple. This linear relationship allows for accurate temperature measurements using a thermocouple.

The sensitivity refers to the relationship between the change in output and the change in input. It is a measure of how responsive the output is to changes in the input. In this case, the correct answer is "Change in Output / Change in Input" because it correctly represents the sensitivity as the ratio of the change in output to the change in input.

The picture shows a thermocouple. A thermocouple is a temperature measuring device that consists of two different conductors, usually metal wires, which are joined at one end to form a junction. When there is a temperature difference between the two junctions, a voltage is produced, which can be measured and used to determine the temperature. Thermistors and thermometers are also temperature measuring devices, but they work on different principles. Therefore, the correct answer is thermocouple.