MCQ-part1 PDF Exam Questions

1- A servo motor is a typical example of _____ a) Electronics system b) Mechanical system c) Computer system d) Mechatronics system 2-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 mech...

1- A servo motor is a typical example of _____ a) Electronics system b) Mechanical system c) Computer system d) Mechatronics system 2-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 3- The main function of Actuator is _____ a) To produce motion b) Detect input c) Detect output d) Detect the state of the system 4- 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 5-A Mechatronics system contains feedback. a) True b) False 6-What converts physical input into output, among the basic parts of a measuring system? a) Transducer or sensor b) Signal conditioning c) Intelligence d) Display 7-The analog to digital conversion in a measurement system takes place inside _____ a) transducer b) signal processor c) display d) led 8-A thermocouple is a transducer. a) True b) Fals 9-What are transducers? a) They convert power from one form to another b) They convert work from one form to another c) They convert work to power d) They convert energy from one form to another 10-What type of energy conversion does a piezoelectric transducer perform? a) It converts mechanical energy to sound energy b) It converts sound energy to mechanical energy c) It converts mechanical energy to electrical energy d) It converts electrical energy to mechanical energy 11-What is the full form of LVDT with respect to displacement transducer? a) Linear variable differential temperature b) Linear variable differential transformer c) Liquid visible differential transformer d) Liquified visible differential transformer 12- What is the effect on properties of LDR when light falls on it? a) Its resistance remains same b) Its resistance changes c) Its capacitance changes d) Its inductance changes 13-Potentiometer as a displacement sensor works on the principle of ________ a) Mutual Inductance b) Self Inductance c) Variable Resistance Transduction d) Hall Effect 14-In capacitive sensors the displacement is measured with respect to change in which internal factor of the sensor? a) Capacitance b) Resistance c) Inductance d) Effervescence 15-A proximity sensor requires physical contact. a) True b) False 16-Mention the types of electrical strain gauges? 1) Inductive 2) Capacitive 3) Piezo electric 4) Resistance types 17-Structures such as gear, linkages, and belts fall under which of the following types of components in a mechatronics system?  A. Electrical component B. Electronic component C. Control system D. Mechanical components 18-In mechatronics, are stepper motors an actuator or a sensor? A. Actuators B. Sensors 19-Which of the following is not a sensor? A. Strain gauge B. Switches C. Servomotor D. Potentiometer 20-A ____ is an electronic device that transfers one type of energy or physical quantity into another. A. Sensor B. Transducers C. Actuators 21-Which kind of sensor in mechatronics can detect the presence or absence of items or targets within its sensing range without requiring physical contact? A. Displacement sensor B. Proximity sensor C. Position sensor D. Velocity sensor 22- Which of the following are used in machine tools for force measurement, hydraulic or pneumatic presses, and as impact sensors in aeronautical vehicles? A. Potentiometer B. Capacitive element sensor C. Strain gauges D. Optical encoders 23- A ____ is a type of semiconductor that transforms light energy into electrical current.  A. Photo Register B. Photodiode 24- The mechatronics are _________ a. Mechanical systems and Electronic systems b. Mechanical systems and Information technology c. Electronic systems and Information technology d. Mechanical systems, Electronic systems and Information technology 25-In which stage the measurement system comes in contact with the measurand or the quantity to be measured? a. Transducer Stage b. Signal Processor Stage c. Output Stage d. None of the above 26-Data acquisition is the process in which, physical variables from the real world are_____ a. converted into electrical signals b. modified and converted into a digital format for processing c. both a. and b. d. none of the above 27-Which of the following is/are characteristic/s of mechatronic products and systems? a. Functional interaction between mechanical, electronic and information technologies b. Spacial interaction of subsystems in one physical unit c. Intelligence related to the control functions of the mechatronics system d. All of the above 28.The function of a sensor is to ________. a. Detect events within specified environment b.Separate physical parameters c.Track and transfer data to computer processor d.Both a and b 29.LDR sensor is abbreviated as ________. a.Light Dependent Resistor b. Light determinant Resistor c. Luminous Duplicated Resistor d.None of the above 30-Which ______ sensors resistance value varies with respect to light intensity? a. LDR b. Photosensitive c.Bio d.All the above 31- In LDR sensor, if the intensity of light applied is less, its resistance value becomes ________. a. Less b.High c. Zero d. Infin ity 32-LDR symbol depends on ________. a. Resistor b.Capacitor c.Inductor d.All the above 33-Which of the following are the advantages of the LDR sensor? a. High sensitivity b. High light-dark resistance ratio c.Inexpensive d. All the above 34-A temperature sensor is provided with ________ as input. a. Sound b.Air c. Temperature d. Liquid 35-The output obtained from the temperature sensor is of ______ form. a. Current b.Voltage c. Both a and b d.None of the above 36-Analog sensors generate _______ analog kind of output signals. a. Discrete b. Continuous c.Both a and b d. Does not generate 37- LDR resistance increases with reduce in ________. a. Power b. Light c. Charges d. All the above 38-The output generated by the piezoelectric sensor is ________. a.Mechanical b.Electric charge c.Chemical d.All the above 39-Temperature sensor acts as ________. a. Thermostat b.Thermistor c.Thermometer d. All the above 40-IR in IR sensor stands for _________. a. Infra Red sensor b.Interior sensor c. Internal red sensor d. All the above 41-Proximity type sensor is a ________ type of sensor. a. Contact type b. Noncontact type c. Both a and b d. Partially contact 42-Which of the following are the applications of proximity sensors? a. Car b.Mobile phones c. Industries d. All the above 43-Do sensors translate physical property data into electrical form? a.Yes b. No c.Maybe 44-Which type of temperature sensor works by measuring the change in electrical resistance of a metal wire as its temperature changes? A. Thermocouple B. Resistance Temperature Detector (RTD) C. Thermistor D. Mercury thermometer 45-Which type of temperature sensor works by generating a voltage in response to a temperature difference between two dissimilar metals? A. Thermocouple B. Resistance Temperature Detector (RTD) C. Thermistor D. Optical Pyrometer 45- That are the two types of thermistors? A. PTC and NTC B. Positive and negative C. Single and dua 45- Strain gauge is a _________ (a) inductive transducer (b)resistive transducer (c) capacitive transducer (d)mechanical transducer 46-strain is defined as _________ (a) change in height per unit height (b) change in weight per unit weight (c) change in length per unit length (d) change in diameter per unit diameter 47-Electrical strain gauge works on the principle of __________ (a) variation of resistance (b) variation of capacitance (c) variation of inductance (d) variation of area 48- …..is a variable inductance displacement transformer. A. RVDT B. Piezoelectric accelerometer C. Bellows D. LVDT E. All above 48- The output voltage of LVDT is given by….. a-Vo=Vs1-Vs2 B. Vo=Vs1+Vs2 C. Vo=Vs2-Vs1 D. Vo=Vs2+Vs1 48-LVDT is a a. capacitive transducer b. resistive transducer c. inductive transducer d. none of them 49-Piezoelectric crystals are used for measurement of ———charges a. static b. dynamic c. static and dynamic d. any of these 50-Piezoelectric crystals produce an e.m.f a. when external mechanical force is applied b. when external magnetic field is applied c. when radiant energy stimulates the crystal d. when the junction of two such crystals is heated 51-Thermocouples are ———transducers a. active b. passive c. adhesive d. both A and C 52-A resistance thermometer is basically a/an a. active transducer b. passive transducer c. potentiometer d. none of these 53-What is the primary function of an LVDT? a. Generate AC voltage b.Convert electrical signal into linear motion c. Convert linear motion into electrical signal d. Amplify electrical signals 54-Piezoelectric transducer is used for measuring __________ (a) non-electrical quantities (b) electrical quantities (c) chemical quantities (d) any quantity 55-Piezoelectric transducer consists of _________ (a) copper rod (b) aluminum wire (c) gold crystal (d) quartz crystal 56-A quartz crystal is _________ (a) a chemical transducer (b) a photoelectric transducer (c) not a self-generating transducer (d) a self-generating transducer 57-Proximity sensors have ______? a-Low-speed response b-High-speed response c-Moderate speed response d-constant speed 58-What kind of sensors utilized in the detecting near objects? a.Proximity Sensor b.Pressure Sensor c.Touch sensor d.Piezoelectric Sensor 59-Which of the following is a type of proximity switch? A. Optical proximity switch B. Magnetic proximity switch C. Capacitive proximity switch D. All of the above 60-In a rotary encoder, what component is typically used to detect the position? A. Capacitor B. Photodetector C. Resistor D. Inductor What are the main applications of mechatronics? What is a sensor? State the purpose of using potentiometer in displacement sensor? Write short notes on (a) Thermocouple (b) Piezoelectric transducer (c) Photovoltaic transducer Define actuator? What is mechatronics? What are some industrial applications of mechatronics?