MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 186 Mcqs, each offering curated multiple-choice questions to sharpen your Electrical Measurements knowledge and support exam preparation. Choose a topic below to get started.
| 101. |
Magneto resistive sensors based on __ _ _ _ _ effect |
| A. | Thomson |
| B. | Faradays |
| C. | Lenz |
| D. | Tesla |
| Answer» B. Faradays | |
| 102. |
What is a data acquisition system? |
| A. | system used for data processing, conversion and transmission |
| B. | accepts data as an input |
| C. | removes noise |
| D. | boosts the signal |
| Answer» B. accepts data as an input | |
| 103. |
In a measuring system what is the term used to specify a difference betweenhigher and lower calibration values? |
| A. | Range |
| B. | Span |
| C. | Drift |
| D. | Threshold |
| Answer» C. Drift | |
| 104. |
A _ _ _ _ _ is an instrument used for navigation and orientation that showsdirection relative to the geographic cardinal directions |
| A. | Compass |
| B. | Gyroscope |
| C. | Accelerometer |
| D. | Inclinometer |
| Answer» B. Gyroscope | |
| 105. |
Why do we need to calibrate sensors? |
| A. | Environmental factors |
| B. | Aging of the components |
| C. | Cost |
| D. | All the above |
| Answer» B. Aging of the components | |
| 106. |
_ _ _ _ _ _ _ signals are much more susceptible to noise |
| A. | Analog signal |
| B. | Digital signal |
| C. | Both Analog and Digital signal |
| D. | None of the above |
| Answer» B. Digital signal | |
| 107. |
In an Inverting Amplifier circuit, the output voltage vo is expressed as a functionof ____________ |
| A. | Input current |
| B. | Output current |
| C. | Source voltage |
| D. | Source current |
| Answer» D. Source current | |
| 108. |
Piezoelectric transducer is used for measuring __________ |
| A. | non-electrical quantities |
| B. | electrical quantities |
| C. | chemical quantities |
| D. | any quantity |
| Answer» B. electrical quantities | |
| 109. |
_ _ _ _ _ _can be defined as the tolerance within which a measurement can berepeated |
| A. | Resolution |
| B. | Accuracy |
| C. | Precision |
| D. | Scale |
| Answer» D. Scale | |
| 110. |
The required and nominal range of Bluetooth device is _ _ _ __ |
| A. | 10 |
| B. | 14 |
| C. | 20 |
| D. | 24 |
| Answer» B. 14 | |
| 111. |
___________, relating the sensor performance after or during exposure tospecified external conditions (e.g. pressure, temperature, vibration and radiation). |
| A. | Static characteristics |
| B. | Dynamic characteristics |
| C. | Environmental characteristics |
| D. | Reliability Characteristics |
| Answer» D. Reliability Characteristics | |
| 112. |
The change in resistance in strain gauge can be calculated by _____________ |
| A. | Kelvin bridge |
| B. | Maxwell bridge |
| C. | Wheatstone bridge |
| D. | Wien bridge |
| Answer» D. Wien bridge | |
| 113. |
_ _ _ _ _ is the complicated output signal types |
| A. | Analog voltage |
| B. | PWM |
| C. | Serial digital |
| D. | All the above |
| Answer» D. All the above | |
| 114. |
How many control lines are present in analog to digital converter in addition toreference voltage? |
| A. | Three |
| B. | Two |
| C. | One |
| D. | None of the mentioned |
| Answer» C. One | |
| 115. |
Input data of smart sensor will be _____________ |
| A. | Analog |
| B. | Digital |
| C. | Analog and digital |
| D. | None of the mentioned |
| Answer» B. Digital | |
| 116. |
_ _ _ _ _ depends on the angle between the electric current and themagnetization direction |
| A. | Anisotropic Magnetoresistance |
| B. | Giant Magnetoresistance |
| C. | Tunnel Magnetoresistance |
| D. | All the above |
| Answer» B. Giant Magnetoresistance | |
| 117. |
_ _ __ _Senses the physical changes occur in the surrounding and converting itinto a readable quantity. |
| A. | Transducer |
| B. | Actuator |
| C. | Relay |
| D. | Sensor |
| Answer» E. | |
| 118. |
In space segments, the satellites are arranged in _ _ _ orbits with _ _ _satellites ineach orbit. |
| A. | 2, 4 |
| B. | 4, 4 |
| C. | 6,4 |
| D. | 8,4 |
| Answer» D. 8,4 | |
| 119. |
Identify which type of material will have high resolution? |
| A. | Carbon composition |
| B. | Wirewound |
| C. | Conductive plastic |
| D. | Thermal composition |
| Answer» D. Thermal composition | |
| 120. |
________ load cells are considered in remote locations, as they do not require apower supply. |
| A. | Hydraulic |
| B. | Pneumatic |
| C. | Capacitance |
| D. | Strain gauge |
| Answer» B. Pneumatic | |
| 121. |
The space segment consists of_ _ _ _ _ satellites nominally orbiting the earth in MEO (Medium Earth Orbit). |
| A. | 10 |
| B. | 14 |
| C. | 20 |
| D. | 24 |
| Answer» E. | |
| 122. |
The _ _ _ _ _characteristics of a transducer refer to the performance of thetransducer when it is subjected to time varying signal. |
| A. | Static |
| B. | Dynamic |
| C. | Transient |
| D. | Both a) and b) |
| Answer» C. Transient | |
| 123. |
Change in output of sensor with change in input is |
| A. | Threashold |
| B. | Slew rate |
| C. | Sensitivity |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 124. |
Sensor and signal conditioning jointly referred as __ _ __ |
| A. | Transducer |
| B. | Actuator |
| C. | Relay |
| D. | All the above |
| Answer» B. Actuator | |
| 125. |
Which technique is most widely used in the single channel data acquisitionsystem? |
| A. | Counter type approximation |
| B. | Flash approximation |
| C. | Successive approximation |
| D. | Delta Sigma approximation |
| Answer» D. Delta Sigma approximation | |
| 126. |
In AMR the maximum sensitivity and linearity is achieved when themagnetization is at _ _ _ with respect to the current. |
| A. | 0 degree |
| B. | 15 degree |
| C. | 30 degree |
| D. | 45degree |
| Answer» E. | |
| 127. |
______________ describes current flow between two junctions formed by twodifferent metals. |
| A. | Peltier effect |
| B. | Thomson effect |
| C. | Seebeck effect |
| D. | None of the mentioned |
| Answer» B. Thomson effect | |
| 128. |
GPS satellite orbiting the earth at an altitude of about _ _ _ _ _ above the surfaceof earth. |
| A. | 19,200 Km |
| B. | 20,200 Km |
| C. | 21,200 Km |
| D. | 22,200 Km |
| Answer» C. 21,200 Km | |
| 129. |
A system will be error free if we remove all systematic error’. |
| A. | True |
| B. | False |
| C. | none |
| D. | none |
| Answer» C. none | |
| 130. |
Data logger system have _______________ |
| A. | Slow sampling rate |
| B. | Fast sampling rate |
| C. | Unpredictable sampling rate |
| D. | None of the mentioned |
| Answer» B. Fast sampling rate | |
| 131. |
Which characteristic of LASER allows it to be used in holography? |
| A. | Coherency |
| B. | Directionality |
| C. | Intensity |
| D. | Monochromaticity |
| Answer» B. Directionality | |
| 132. |
By using Rotating Polygon as scanner in Lidar what type of ground pattern itwill form ______ |
| A. | Z shaped |
| B. | Sinusoidal |
| C. | Parallel |
| D. | Elliptical |
| Answer» D. Elliptical | |
| 133. |
_ _ _ _ _ sensors are not affected by ambient conditions, such as dust, humidity, and vibrations and are insensitive to some ambient conditions based on the principle that these sensors display a constant flow of electrical current, making their characteristics constant over time. |
| A. | LVDT |
| B. | RVDT |
| C. | Hall effect |
| D. | Load cell |
| Answer» D. Load cell | |
| 134. |
In Hall Effect, the electric field applied is perpendicular to both current andmagnetic field? |
| A. | True |
| B. | False |
| C. | none |
| D. | none |
| Answer» B. False | |
| 135. |
Sensors that use an additional energy source for their operation are called _ _ _ __ |
| A. | modulating sensors |
| B. | Interrogating sensors |
| C. | Direct sensors |
| D. | Both a) and b) |
| Answer» E. | |
| 136. |
What is the term used to express the ability of a measuring system to maintain itsstandard performance? |
| A. | Zero stability |
| B. | Stability |
| C. | Sensitivity |
| D. | Linearity |
| Answer» C. Sensitivity | |
| 137. |
What is the name of the question mark area? |
| A. | Measuring junction |
| B. | Bridge junction |
| C. | Temperature junction |
| D. | Compensating junction |
| Answer» B. Bridge junction | |
| 138. |
Which is the best example of a single channel data acquisition system? |
| A. | CPM |
| B. | BPM |
| C. | APM |
| D. | DPM |
| Answer» E. | |
| 139. |
Potentiometer is a _ _ _ _ _ |
| A. | Active transducer |
| B. | Passive transducer |
| C. | Both a) and b) |
| D. | None of the mentioned |
| Answer» C. Both a) and b) | |
| 140. |
Optical fiber sensors are electrically ____________ |
| A. | active |
| B. | passive |
| C. | active as well as passive |
| D. | cannot be determined |
| Answer» C. active as well as passive | |
| 141. |
Today, almost all electronic weighing scales use ________ for the measurementof weight |
| A. | Load cell |
| B. | Strain gauge |
| C. | Magentoresistance |
| D. | Gyroscope |
| Answer» B. Strain gauge | |
| 142. |
Data logger deals with __________________ |
| A. | Digital signals |
| B. | Analog signals |
| C. | Both digital and analog signals |
| D. | None of the mentioned |
| Answer» B. Analog signals | |
| 143. |
Photoconductive transducers produce output ________ |
| A. | due to change in inductance |
| B. | due to change in light |
| C. | due to change in resistance |
| D. | due to change in temperature |
| Answer» D. due to change in temperature | |
| 144. |
_ _ _ _ _ _ is also used to indicate the most probable value of the measuredquantity when a set of readings are taken. |
| A. | Mean |
| B. | Median |
| C. | Mode |
| D. | deviation |
| Answer» C. Mode | |
| 145. |
Average value of the readings is _ _ _ _ _ |
| A. | Mean |
| B. | Median |
| C. | Mode |
| D. | deviation |
| Answer» B. Median | |
| 146. |
What is the region after the stop band frequency in the magnitude frequencyresponse of a low pass filter? |
| A. | Stop band |
| B. | Pass band |
| C. | Transition band |
| D. | None of the mentioned |
| Answer» B. Pass band | |
| 147. |
Bluetooth Network consists of a Personal Area Network which contains aminimum of ___to maximum of ___ Bluetooth peer devices. |
| A. | 2 ,4 |
| B. | 2,6 |
| C. | 2,8 |
| D. | 2,10 |
| Answer» D. 2,10 | |
| 148. |
The GPS satellite comprises of sun seeking _ _ _ _ having _ _ _ _ providingsecondary power. |
| A. | Solar panels and Wind energy |
| B. | Solar panels and Ni Cad batteries |
| C. | Lead batteries and Ni Cad Batteries |
| D. | Solar panels and Lead batteries |
| Answer» C. Lead batteries and Ni Cad Batteries | |
| 149. |
When the magnetic layers are aligned in the same direction, electrons originatingin one layer may pass relatively _ _ _ _ _ through the other layers |
| A. | Freely |
| B. | Blocked |
| C. | rest on |
| D. | All the above |
| Answer» B. Blocked | |
| 150. |
The below picture is an application of _ _ _ _ |
| A. | Radio beacon |
| B. | Load cell |
| C. | magnetoresistance |
| D. | MEMS sensor |
| Answer» C. magnetoresistance | |