McqMate
These multiple-choice questions (MCQs) are designed to enhance your knowledge and understanding in the following areas: Electrical Engineering .
Chapters
| 101. |
Synchro is a rotating device that operates on the same principle as a _ _ _ _ _ _ and produces a set of voltages, correlated to angular position. |
| A. | Transformer principle |
| B. | Faradays principle |
| C. | Lens law |
| D. | Tesla principle |
| Answer» A. Transformer principle | |
| 102. |
What is the principle of operation of LVDT? |
| A. | Mutual inductance |
| B. | Self-inductance |
| C. | Permanence |
| D. | Reluctance |
| Answer» A. Mutual inductance | |
| 103. |
In GPS, Control segment consists of a master control station and _ _ _ _ other monitor stations. |
| A. | 2 |
| B. | 4 |
| C. | 6 |
| D. | 8 |
| Answer» B. 4 | |
| 104. |
Potentiometer is a _ _ _ _ _ |
| A. | Active transducer |
| B. | Passive transducer |
| C. | Both a) and b) |
| D. | None of the mentioned |
| Answer» B. Passive transducer | |
| 105. |
_ _ _ _ _ is an analog position sensor that is absolute over a single turn. |
| A. | Synchros |
| B. | Resolver |
| C. | LVDT |
| D. | Microsyn |
| Answer» B. Resolver | |
| 106. |
Each satellite takes _ _ _ _ _in completing one full orbit and repeats the same ground track each day. |
| A. | 2 hour |
| B. | 12 hour |
| C. | 22 hour |
| D. | 24 hour |
| Answer» B. 12 hour | |
| 107. |
Bluetooth Network consists of a Personal Area Network which contains a minimum of ___to maximum of ___ Bluetooth peer devices. |
| A. | 2 ,4 |
| B. | 2,6 |
| C. | 2,8 |
| D. | 2,10 |
| Answer» C. 2,8 | |
| 108. |
LiDAR stands for _ _ _ _ _ _ _ _ |
| A. | Light detection and Resonance |
| B. | Light detection and Ranging |
| C. | LED detection and Ranging |
| D. | Line distance and Ranging |
| Answer» B. Light detection and Ranging | |
| 109. |
In optical encoder, the inner track has just one hole which is used locate the ‘_ _ _ _of the disc. |
| A. | Anti Clockwise direction of the rotation |
| B. | Home position |
| C. | Clockwise direction of the rotation |
| D. | Both a) and c) |
| Answer» B. Home position | |
| 110. |
The GPS satellite comprises of sun seeking _ _ _ _ having _ _ _ _ providing secondary 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» B. Solar panels and Ni Cad batteries | |
| 111. |
Forklift uses _ _ _ _ _ _ sensor |
| A. | Potentiometer |
| B. | Encoder |
| C. | Synchros |
| D. | Resolver |
| Answer» A. Potentiometer | |
| 112. |
An _ _ _ _ _ _ is an electromechanical device used to measure acceleration forces such as static or dynamic |
| A. | Synchros |
| B. | Resolver |
| C. | LVDT |
| D. | Microsyn |
| Answer» B. Resolver | |
| 113. |
How many satellites are used to gather the exact location using GPS? |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» D. 4 | |
| 114. |
_ _ _ _ _used where rotational or angular displacements are to be measured |
| A. | LVDT |
| B. | RVDT |
| C. | Hall effect |
| D. | Load cell |
| Answer» B. RVDT | |
| 115. |
Applications of Lidar _ _ _ _ _ |
| A. | Ocenography |
| B. | Agriculture |
| C. | Terrain model |
| D. | All the above |
| Answer» D. All the above | |
| 116. |
The required and nominal range of Bluetooth device is _ _ _ __ |
| A. | 10 |
| B. | 14 |
| C. | 20 |
| D. | 24 |
| Answer» A. 10 | |
| 117. |
_ _ _ _ _ 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» C. Hall effect | |
| 118. |
The space segment consists of_ _ _ _ _ satellites nominally orbiting the earth in MEO (Medium Earth Orbit). |
| A. | 10 |
| B. | 14 |
| C. | 20 |
| D. | 24 |
| Answer» D. 24 | |
| 119. |
Optical encoders are used to measure _ _ _ _ _ |
| A. | Angular positions |
| B. | Linear positions |
| C. | Both angular and linear positions |
| D. | None of the above |
| Answer» C. Both angular and linear positions | |
| 120. |
The __ ____ ____ is a space-based satellite navigation system that provides location and time information in all weather conditions, anywhere on or near the Earth |
| A. | Radio beacon |
| B. | Gyroscope |
| C. | GPS |
| D. | Accelerometer |
| Answer» C. GPS | |
| 121. |
_ _ _ _ _ _elements offer excellent temperature stability and high power dissipation abilities. |
| A. | Wire wound |
| B. | Conductive plastic |
| C. | Hybrid |
| D. | None of the above |
| Answer» A. Wire wound | |
| 122. |
The output voltage is measured which is proportional to the distance travelled by the _ _ _ _ _ |
| A. | Wiper/Jockey |
| B. | Conductive plastic |
| C. | Hybrid |
| D. | None of the above |
| Answer» A. Wiper/Jockey | |
| 123. |
By using Rotating Polygon as scanner in Lidar what type of ground pattern it will form ______ |
| A. | Z shaped |
| B. | Sinusoidal |
| C. | Parallel |
| D. | Elliptical |
| Answer» C. Parallel | |
| 124. |
The distance sensing method of radio beacon range from _ _ _ _ _ |
| A. | 1M to 100 M |
| B. | 2 M to 200 M |
| C. | 2Cm to 200 Cm |
| D. | 1Cm to 100 Cm |
| Answer» A. 1M to 100 M | |
| 125. |
Laser is used in LIDAR for what purpose? |
| A. | High-Speed Photography |
| B. | Range finder |
| C. | Optical Carrier signal |
| D. | Drilling |
| Answer» B. Range finder | |
| 126. |
A ________ is thermally sensitive resistor that exhibits a large change in resistance. |
| A. | Thermistor |
| B. | Resistance Thermometer |
| C. | Thermo couple |
| D. | Semiconductor based sensor |
| Answer» A. Thermistor | |
| 127. |
________ measures temperature by correlating the resistance of the RTD with temperature. |
| A. | Thermistor |
| B. | Resistance Thermometer |
| C. | Thermo couple |
| D. | Semiconductor based sensor |
| Answer» B. Resistance Thermometer | |
| 128. |
________ consists of two different metals connected at two points. |
| A. | Thermistor |
| B. | Resistance Thermometer |
| C. | Thermocouple |
| D. | Semiconductor based sensor |
| Answer» C. Thermocouple | |
| 129. |
Which type of temperature sensor is placed in Integrated Circuits? |
| A. | Thermistor |
| B. | Resistance Thermometer |
| C. | Thermocouple |
| D. | Semiconductor based sensor |
| Answer» D. Semiconductor based sensor | |
| 130. |
Which sensor is linear and low accuracy? |
| A. | Thermistor |
| B. | Resistance Thermometer |
| C. | Thermocouple |
| D. | Semiconductor based sensor |
| Answer» D. Semiconductor based sensor | |
| 131. |
Piezoelectric transducer is used for measuring __________ |
| A. | non-electrical quantities |
| B. | electrical quantities |
| C. | chemical quantities |
| D. | any quantity |
| Answer» A. non-electrical quantities | |
| 132. |
Piezoelectricity means _________________ |
| A. | Electric polarization |
| B. | Electric dielectric |
| C. | Pressure electricity |
| D. | Polar dielectric |
| Answer» C. Pressure electricity | |
| 133. |
What is the full form of LASER? |
| A. | Light Absorbent and Stimulated Emission of Radiations |
| B. | Light Absorbing Solar Energy Resource |
| C. | Light Amplification by Stimulated Emission of Radiations |
| D. | Light Amplification of Singular Emission of Radiations |
| Answer» C. Light Amplification by Stimulated Emission of Radiations | |
| 134. |
In Stimulated Absorption, what is the lifetime of atoms ground state? |
| A. | 1 second |
| B. | 1 minute |
| C. | 1 hour |
| D. | Infinity |
| Answer» D. Infinity | |
| 135. |
Which characteristic of LASER allows it to be used in holography? |
| A. | Coherency |
| B. | Directionality |
| C. | Intensity |
| D. | Monochromaticity |
| Answer» A. Coherency | |
| 136. |
Which of the following can be used for the generation of laser pulse? |
| A. | Ruby laser |
| B. | Carbon dioxide laser |
| C. | Helium neon laser |
| D. | Nd- YAG laser |
| Answer» D. Nd- YAG laser | |
| 137. |
Point out the wrong statement. |
| A. | MEMS stands for microelectromechanical systems |
| B. | MEMS as a class can be between 1000 and 100000 micrometers in size |
| C. | Several MEMS are packaged in smartphones |
| D. | All of the mentioned |
| Answer» B. MEMS as a class can be between 1000 and 100000 micrometers in size | |
| 138. |
Which of the following is not a configuration of a smart sensor? |
| A. | Transducer |
| B. | Network interface |
| C. | Processor |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 139. |
Input signal to smart sensor is fed from _____________ |
| A. | Power supply |
| B. | Transducer |
| C. | Volt meter |
| D. | All of the mentioned |
| Answer» B. Transducer | |
| 140. |
Signal conditioning is carried out in ______________ |
| A. | Transducer housing |
| B. | Processor |
| C. | Network interface |
| D. | None of the mentioned |
| Answer» A. Transducer housing | |
| 141. |
Output of smart sensors will of ________________ |
| A. | Analog |
| B. | Digital |
| C. | Analog and digital |
| D. | None of the mentioned |
| Answer» B. Digital | |
| 142. |
Which of the following defines smartness of sensor? |
| A. | Quality of data |
| B. | Circuit size |
| C. | Circuit components |
| D. | All of the mentioned |
| Answer» A. Quality of data | |
| 143. |
Input data of smart sensor will be _____________ |
| A. | Analog |
| B. | Digital |
| C. | Analog and digital |
| D. | None of the mentioned |
| Answer» A. Analog | |
| 144. |
LDR’s are also called _______________ |
| A. | Photo voltaic cell |
| B. | Photo resistive cell |
| C. | Photo emissive cell |
| D. | All of the mentioned |
| Answer» B. Photo resistive cell | |
| 145. |
Which of the following is not correct for fibre optic sensors? |
| A. | Immune to electro magnetic interference |
| B. | Immune to radiation hazard |
| C. | Can be used in harsh environments |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 146. |
Epoxy material in fibre optics is intended for ________________ |
| A. | Better optical properties |
| B. | Better reflection |
| C. | Better sealing |
| D. | Reducing noise |
| Answer» C. Better sealing | |
| 147. |
Optical fiber sensors are electrically ____________ |
| A. | active |
| B. | passive |
| C. | active as well as passive |
| D. | cannot be determined |
| Answer» B. passive | |
| 148. |
Optical fibers are not immune to ________ |
| A. | electronic disturbances |
| B. | magnetic disturbances |
| C. | ambient light interference |
| D. | electromagnetic disturbances |
| Answer» C. ambient light interference | |
| 149. |
In which of the following optic fiber sensor the fiber is simply used to carry light to and from an external optical device where the sensing takes place? |
| A. | extrinsic fiber optic sensor |
| B. | energized fiber optic sensor |
| C. | all fibers are used to simply carry light to and from the external optical devices |
| D. | intrinsic fiber optic sensor |
| Answer» A. extrinsic fiber optic sensor | |
| 150. |
Other name for tactile sensor is______________ |
| A. | Pressure sensor |
| B. | Humidity sensor |
| C. | Touch sensor |
| D. | Temperature sensor |
| Answer» C. Touch sensor | |
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