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360+ Mechatronics Solved MCQs

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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