McqMate
These multiple-choice questions (MCQs) are designed to enhance your knowledge and understanding in the following areas: Mechanical Engineering .
| 101. |
Where and when was the word Mechatronics invented? |
| A. | japan(1960) |
| B. | japan(1980) |
| C. | europe(1960) |
| D. | europe(1980) |
| Answer» A. japan(1960) | |
| 102. |
What is the function of an input signal conditioning unit? |
| A. | to produce control signals |
| B. | to amplify the signal and convert it into digital form |
| C. | to perform mechanical work |
| D. | to produce electrical signals |
| Answer» B. to amplify the signal and convert it into digital form | |
| 103. |
The main mechanical components of a servo motor are stator and rotor. |
| A. | true |
| B. | false |
| Answer» A. true | |
| 104. |
Example of ‘Stand-alonesystem’ is |
| A. | machining centres |
| B. | washing machine |
| C. | robots for parts handling |
| D. | automated inspection stations |
| Answer» B. washing machine | |
| 105. |
Which among the following carry out the overall control of a system? |
| A. | graphical display |
| B. | sensors |
| C. | actuators |
| D. | digital controls |
| Answer» D. digital controls | |
| 106. |
A humanoid robot is an example of |
| A. | artificial intelligence |
| B. | stand-alone systems |
| C. | large factory systems |
| D. | high level distributed sensor microcontroller actuator |
| Answer» A. artificial intelligence | |
| 107. |
Where is the feedback generated by sensors in a mechatronics system given? |
| A. | input sensors |
| B. | comparators |
| C. | mechanical actuators |
| D. | output sensors |
| Answer» B. comparators | |
| 108. |
A Mechatronics system contains feedback. |
| A. | true |
| B. | false |
| Answer» A. true | |
| 109. |
Which error is also termed as measurement error? |
| A. | static errors |
| B. | dynamic errors |
| C. | systematic errors |
| D. | statical error |
| Answer» B. dynamic errors | |
| 110. |
In retardation type measuring lag the instrument responds after an unspecified dead time lag. |
| A. | true |
| B. | false |
| Answer» B. false | |
| 111. |
Active transducers do not require power source for operation. |
| A. | true |
| B. | false |
| Answer» A. true | |
| 112. |
Which among the following transducer is an example of active transducer? |
| A. | ldr (light dependant sensor) |
| B. | strain gauge |
| C. | hall effect sensor |
| D. | photovoltaic cell |
| Answer» D. photovoltaic cell | |
| 113. |
Which among the following transducer is an example of passive transducer? |
| A. | chemical transducer |
| B. | thermoelectric transducer |
| C. | strain gauge |
| D. | piezoelectric transducer |
| Answer» C. strain gauge | |
| 114. |
Fidelity is a static characteristic. |
| A. | true |
| B. | false |
| Answer» B. false | |
| 115. |
Measuring lag is a dynamic characteristic. |
| A. | true |
| B. | false |
| Answer» A. true | |
| 116. |
In time delay type measuring lag the instrument responds immediately as soon as the input is altered. |
| A. | true |
| B. | false |
| Answer» B. false | |
| 117. |
Which instrument can be used to measure time without any errors? |
| A. | analog clock |
| B. | digital clock |
| C. | atomic clock |
| D. | doomsday clock |
| Answer» C. atomic clock | |
| 118. |
Which method can reduce dynamic error? |
| A. | by increasing accuracy |
| B. | by increasing precession |
| C. | by reducing sensitivity |
| D. | by reducing time lag |
| Answer» D. by reducing time lag | |
| 119. |
Which among the following is not a dynamic characteristic? |
| A. | precession |
| B. | measuring lag |
| C. | dynamic error |
| D. | fidelity |
| Answer» A. precession | |
| 120. |
Which among the following is not a dynamic characteristic? |
| A. | response speed |
| B. | accuracy |
| C. | retardation type measuring lag |
| D. | time delay lag |
| Answer» B. accuracy | |
| 121. |
Which method can reduce dynamic error? |
| A. | by increasing stability |
| B. | by increasing tolerance |
| C. | by increasing resolution |
| D. | by increasing speed of response |
| Answer» D. by increasing speed of response | |
| 122. |
Which among the following transducer is an example of passive transducer? |
| A. | photovoltaic cell |
| B. | thermocouple |
| C. | piezoelectric transducer |
| D. | thermistor |
| Answer» D. thermistor | |
| 123. |
Which among the following transducer is an example of active transducer? |
| A. | ldr (light dependant sensor) |
| B. | thermocouple |
| C. | lvdt (linear variable differential transformer) |
| D. | thermistor |
| Answer» B. thermocouple | |
| 124. |
Standardization of potentiometer is used for |
| A. | accuracy |
| B. | accuracy in measurement |
| C. | use of low voltage sources |
| D. | none of the mentioned |
| Answer» C. use of low voltage sources | |
| 125. |
Which of the following device is used for calibration of a potentiometer? |
| A. | electrochemical cell |
| B. | galvanometer |
| C. | variable dc source |
| D. | all of the mentioned |
| Answer» A. electrochemical cell | |
| 126. |
Galvanometer used should be calibrated first. |
| A. | true |
| B. | false |
| Answer» B. false | |
| 127. |
Which of the following cannot be measured using potentiometer? |
| A. | dc voltage |
| B. | temperature |
| C. | resistance |
| D. | none of the mentioned |
| Answer» D. none of the mentioned | |
| 128. |
Which of the following is not possible? |
| A. | constant current potentiometer |
| B. | constant resistance potentiometer |
| C. | thermocouple potentiometer |
| D. | none of the mentioned |
| Answer» D. none of the mentioned | |
| 129. |
Galvanometer is used for |
| A. | calibration of potentiometer |
| B. | indication of null position |
| C. | providing stability |
| D. | all of the mentioned |
| Answer» B. indication of null position | |
| 130. |
Power consumption of unknown source connected will be |
| A. | very high |
| B. | very low |
| C. | zero ideally |
| D. | always constant |
| Answer» C. zero ideally | |
| 131. |
A potentiometer cannot be used for calibration of ammeter. |
| A. | true |
| B. | false |
| Answer» B. false | |
| 132. |
Which of the following devices cannot be used potentiometer as calibrating device? |
| A. | watt meter |
| B. | energy meter |
| C. | voltmeter |
| D. | all of the mentioned |
| Answer» D. all of the mentioned | |
| 133. |
At null position, galvanometer reading will be |
| A. | maximum |
| B. | zero |
| C. | unchanged for further reading |
| D. | none |
| Answer» B. zero | |
| 134. |
Which of the following is not a characteristic of an ideal transducer? |
| A. | high dynamic range |
| B. | low linearity |
| C. | high repeatability |
| D. | low noise |
| Answer» B. low linearity | |
| 135. |
A transducer converting ground movement or velocity to voltage is known as |
| A. | geophone |
| B. | pickup |
| C. | hydrophone |
| D. | sonar transponder |
| Answer» A. geophone | |
| 136. |
Which of the following represent active transducer? |
| A. | strain gauge |
| B. | thermistor |
| C. | lvdt |
| D. | thermocouple |
| Answer» D. thermocouple | |
| 137. |
What is the relation between scale factor and sensitivity of a transducer? |
| A. | scale factor is double of sensitivity |
| B. | scale factor is inverse of sensitivity |
| C. | sensitivity is inverse of scale factor |
| D. | sensitivity is equal to scale factor |
| Answer» B. scale factor is inverse of sensitivity | |
| 138. |
Which of the following is an analog transducer? |
| A. | encoders |
| B. | strain gauge |
| C. | digital tachometers |
| D. | limit switches |
| Answer» B. strain gauge | |
| 139. |
What is the principle of operation of LVDT? |
| A. | mutual inductance |
| B. | self-inductance |
| C. | permanence |
| D. | reluctance |
| Answer» A. mutual inductance | |
| 140. |
Capacitive transducer is used for? |
| A. | static measurement |
| B. | dynamic measurement |
| C. | transient measurement |
| D. | both static and dynamic |
| Answer» B. dynamic measurement | |
| 141. |
Which of the following is used in photo conductive cell? |
| A. | selenium |
| B. | quartz |
| C. | rochelle salt |
| D. | lithium sulphate |
| Answer» A. selenium | |
| 142. |
Which of the following can be measured using Piezo-electric transducer? |
| A. | c = a∈⁄d |
| B. | c = ∈⁄d |
| C. | c = a⁄d |
| D. | c = a |
| Answer» A. c = a∈⁄d | |
| 143. |
A capacitive transducer works on the principle of |
| A. | inductance |
| B. | capacitance |
| C. | resistance |
| D. | reluctance |
| Answer» B. capacitance | |
| 144. |
Capacitance can be varied in |
| A. | 10 ways |
| B. | 6 ways |
| C. | 2 ways |
| D. | 4 ways |
| Answer» D. 4 ways | |
| 145. |
Capacitive pressure transducer uses distance of separation for sensing the capacitance. |
| A. | true |
| B. | false |
| Answer» A. true | |
| 146. |
Capacitive transducer displays |
| A. | linear behaviour |
| B. | non-linear behaviour |
| C. | exponential behaviour |
| D. | tangential behaviour |
| Answer» B. non-linear behaviour | |
| 147. |
Frequency response of capacitive transducers is |
| A. | high |
| B. | medium |
| C. | low |
| D. | zero |
| Answer» C. low | |
| 148. |
What is the relation between capacitance and output impedance? |
| A. | proportional to square |
| B. | constant |
| C. | directly proportional |
| D. | inversely proportional |
| Answer» D. inversely proportional | |
| 149. |
What is the relation between capacitance and input impedance? |
| A. | directly proportional |
| B. | constant |
| C. | proportional to square |
| D. | inversely proportional |
| Answer» A. directly proportional | |
| 150. |
Composite capacitance consists of |
| A. | one dielectric medium |
| B. | more than one dielectric medium |
| C. | five dielectric media |
| D. | ten dielectric media |
| Answer» B. more than one dielectric medium | |
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