

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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