Question 1

Strain gauge is an example of _ _ _ _ _ sensors&#10;A)Modulating sensor&#10;B)Direct sensor&#10;C)Self generating sensors&#10;D)None of the above

Accepted Answer

A strain gauge is a modulating sensor because it modulates an electrical signal in response to mechanical deformation.

Question 2

Sensor is a type of transducer.

Accepted Answer

A sensor is a type of transducer because it converts one form of energy (e.g., heat, light, sound) into another form, typically an electrical signal.

Question 3

Based upon what parameters sensors will be chosen_ _ _ _ _&#10;A)Environmental factors&#10;B)Economic factor&#10;C)Static characteristics&#10;D)All the above

Accepted Answer

Sensors are chosen based on a variety of parameters including environmental factors (such as temperature, humidity, and pressure conditions in which the sensor must operate), economic factors (cost considerations for the sensor itself and its maintenance), and static characteristics (accuracy, sensitivity, resolution, etc.). Therefore, all the mentioned factors are important in the selection process.

Question 4

_ _ _ _ _ _can be defined as the variation in the constant of proportionality between the input physical quantity and the output electrical signal&#10;A)Resolution&#10;B)Accuracy&#10;C)Precision&#10;D)Linearity

Accepted Answer

Linearity refers to the variation in the constant of proportionality between the input physical quantity and the output electrical signal, indicating how a system's output signal changes in response to changes in the input signal.

Question 5

Average value of the readings is _ _ _ _ _&#10;A)Mean&#10;B)Median&#10;C)Mode&#10;D)deviation

Accepted Answer

The average value of a set of readings is calculated by summing all the readings and then dividing by the total number of readings, which is the definition of the mean.

Question 6

Change in output of sensor with change in input is&#10;A)Threashold&#10;B)Slew rate&#10;C)Sensitivity&#10;D)None of the mentioned

Accepted Answer

Sensitivity is the measure of the change in output of a sensor with respect to a change in input, indicating how much the sensor's output changes when the measured quantity changes.

Question 7

Smallest change which a sensor can detect is ____________&#10;A)Resolution&#10;B)Accuracy&#10;C)Precision&#10;D)Scale

Accepted Answer

Resolution is the smallest change or difference in the measured variable that a sensor can detect.

Question 8

Which of the following error is caused by a reversal of measured property?&#10;A)Hysterisis&#10;B)Noise&#10;C)Digitization error&#10;D)Quantization error

Accepted Answer

Hysteresis is the error caused by a reversal of the measured property, where the output of a system depends not only on its current input but also on its history of past inputs. This can lead to a lag or delay in the response of the system to changes in the measured property.

Question 9

___________, describing the performance with respect to very slow changes.&#10;A)Static characteristics&#10;B)Dynamic characteristics&#10;C)Environmental characteristics&#10;D)Reliability Characteristics

Accepted Answer

Static characteristics are used to describe the performance of systems, sensors, or devices with respect to slow or no changes in conditions or inputs, focusing on aspects like accuracy, precision, and stability under steady-state conditions. Dynamic characteristics, on the other hand, describe performance under changing conditions.

Question 10

Unpredictable error _ _ _ _ __&#10;A)Random error&#10;B)Gross error&#10;C)Systematic error&#10;D)Precision error

Accepted Answer

Unpredictable errors are referred to as random errors because they vary in an unpredictable manner from one measurement to another. They are caused by unknown and unpredictable changes in the experiment.

Question 11

What is the term used to express the ability of a measuring system to maintain its standard performance?&#10;A)Zero stability&#10;B)Stability&#10;C)Sensitivity&#10;D)Linearity

Accepted Answer

The answer of What is the term used to express...

Question 12

_ _ _ _ _ _ is also used to indicate the most probable value of the measured quantity when a set of readings are taken.&#10;A)Mean&#10;B)Median&#10;C)Mode&#10;D)deviation

Accepted Answer

The answer of _ _ _ _ _ _ is...

Question 13

A system will be error free if we remove all systematic error'.

Accepted Answer

The answer of A system will be error free if...

Question 14

Thermocouple is an example of _ _ _ _ _ _ sensor&#10;A)Modulating sensor&#10;B)Direct sensor&#10;C)Interrogating sensors&#10;D)None of the above

Accepted Answer

The answer of Thermocouple is an example of _ _...

Question 15

Which of the following error is caused by poor calibration of the instrument?&#10;A)Random error&#10;B)Gross error&#10;C)Systematic error&#10;D)Precision error

Accepted Answer

The answer of Which of the following error is caused...

Question 16

_ _ _ _ _ _ is a popular technique for transmitting digital data in embedded systems.&#10;A)Analog voltage&#10;B)PWM&#10;C)Serial digital&#10;D)All the above

Accepted Answer

The answer of _ _ _ _ _ _ is...

Question 17

How systematic errors are eliminated?&#10;A)Frequent measurement&#10;B)Replacement of instrument&#10;C)Finding mean of reading&#10;D)Finding variance of reading

Accepted Answer

The answer of How systematic errors are eliminated?&#10;A)Frequent measurement&#10;B)Replacement of...

Question 18

'Zero error is an indication of instrumental error'.

Accepted Answer

The answer of 'Zero error is an indication of instrumental...

Question 19

Which transducer is known as 'self-generating transducer'?&#10;A)Active transducer&#10;B)Passive transducer&#10;C)Secondary transducer&#10;D)Analog transducer

Accepted Answer

The answer of Which transducer is known as 'self-generating transducer'?&#10;A)Active...

Question 20

Sensors that use an additional energy source for their operation are called _ _ _ _ _&#10;A)modulating sensors&#10;B)Interrogating sensors&#10;C)Direct sensors&#10;D)Both a) and b)

Accepted Answer

The answer of Sensors that use an additional energy source...

Question 21

_ _ _ _ _ _can be defined as the tolerance within which a measurement can be repeated&#10;A)Resolution&#10;B)Accuracy&#10;C)Precision&#10;D)Scale

Accepted Answer

The answer of _ _ _ _ _ _can be...

Question 22

Why do we need to calibrate sensors?&#10;A)Environmental factors&#10;B)Aging of the components&#10;C)Cost&#10;D)All the above

Accepted Answer

The answer of Why do we need to calibrate sensors?&#10;A)Environmental...

Question 23

_ _ _ _ _ _ is the departure of a given reading from the arithmetic mean of a group of readings.&#10;A)Mean&#10;B)Median&#10;C)Mode&#10;D)deviation

Accepted Answer

The answer of _ _ _ _ _ _ is...

Question 24

_ _ _ _ __ _, describing the sensor's life expectancy&#10;A)Static characteristics&#10;B)Dynamic characteristics&#10;C)Environmental characteristics&#10;D)Reliability Characteristics

Accepted Answer

The answer of _ _ _ _ __ _, describing...

Question 25

Sensors Output signal types&#10;A)Analog voltage&#10;B)PWM&#10;C)Serial digital&#10;D)All the above

Accepted Answer

The answer of Sensors Output signal types&#10;A)Analog voltage&#10;B)PWM&#10;C)Serial digital&#10;D)All the...

Deck 1: Understanding Sensors and Transducers: Parameters, Calibration, and Performance