AB Automation, Instrumentation, and Control System Flashcards by Lhy Buquiron

Agricultural and Biosystems Automation and Instrumentation refers to the use and application of agricultural and biosystems:

A. Circuits
C. Sensors
B. Instruments
D. Integrated circuits

C. Sensors

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It senses the physical changes occur in the surrounding and converting it into a readable quantity.

A. Transducer
C. Actuator
B. Sensor
D. None of these

B. Sensor

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It is used to measure process variables for system monitoring diagnosis, supervisory control and for a variety of other purpose.

A. Transducer
C. Actuator
B. Sensor
D. None of these

B. Sensor

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The device that can perform the control actions and drive the plant directly.

A. Transducer
C. Actuator
B. Sensor
D. None of these

C. Actuator

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Sensor and signal conditioning jointly referred as:

A. Transducer
C. Actuator
B. Sensor
D. None of these

A. Transducer

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An instrument that is equipped with strain gauge installed at the dynamometer shaft to determine the torque delivered by an engine.

A. Amplifier
C. Tachometer
B. Transducer
D. None of these

B. Transducer

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It is also known as a “self-generating transducer”.

A. Active transducer
C. Analog transducer
B. Passive transducer
D. None of these

A. Active transducer

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Capacitive transducer is used for:

A. Static measurement
C. Transient measurement
B. Dynamic measurement
D. Both A and B

B. Dynamic measurement

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Which of the following represent active transducer?

A. Strain gauge
C. Thermocouple
B. Thermistor
D. None of these

C. Thermocouple

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Which of the following is not a characteristic of an ideal transducer?

A. High dynamic range
C. High repeatability
B. Low linearity
D. Low noise

B. Low linearity

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In a measuring system quantity under measurement is termed as:

A. Measurand
C. Sensors
B. Controllers
D. Indicators

A. Measurand

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It can be defined as the tolerance within which a measurement can be repeated.

A. Resolution
C. Precision
B. Accuracy
D. Scale

C. Precision

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It is a popular technique for transmitting data in embedded systems.

A. Analog voltage
C. Serial digital
B. Pulse Width Modulation (PWM)
D. All of these

B. Pulse Width Modulation (PWM)

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It is a technique for getting analog results with digital means.

A. Analog voltage
C. Serial digital
B. Pulse Width Modulation (PWM)
D. All of these

B. Pulse Width Modulation (PWM)

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______ signals are much more susceptible to noise.

A. Analog
C. Both A and B
B. Digital
D. None of these

A. Analog

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The analog to digital conversion in a measurement system takes place inside:

A. Transducer
C. Display
B. Signal processor
D. Led

B. Signal processor

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Which devices measures gases or liquid?

A. Proximity sensor
C. Temperature sensor
B. Pressure sensor
D. Touch sensor

B. Pressure sensor

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Which sensor measures the pressure relative to perfect vacuum?

A. Absolute pressure sensor
C. Vacuum pressure sensor
B. Gauge pressure sensor
D. Differential pressure sensor

A. Absolute pressure sensor

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Which sensor measure the pressure relative to atmospheric pressure?

A. Absolute pressure sensor
C. Vacuum pressure sensor
B. Gauge pressure sensor
D. Differential pressure sensor

b. gauge pressure sensor

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Barometer is which type of sensor?

A. Pressure sensor
C. Humidity sensor
B. Temperature sensor
D. Touch sensor

A. Pressure sensor

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Touch screen devices use which sensor?

A. Pressure sensor
C. Humidity sensor
B. Temperature sensor
D. Touch sensor

a. pressure sensor

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Which sensor is LM35?

A. Pressure sensor
C. Humidity sensor
B. Temperature sensor
D. Touch sensor

B. Temperature sensor

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Which of the following is a temperature sensor?

A. LM35
C. STSC1
B. DS18B20
D. All of these

D. All of these

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Electric motor protection has which sensor?

A. Pressure sensor
C. Humidity sensor
B. Temperature sensor
D. Touch sensor

B. Temperature sensor

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Which type of temperature sensor is placed in Integrated Circuits? A. Semiconductor based sensor C. Thermocouple B. Resistance Thermometer D. Thermistor

A. Semiconductor based sensor

Which of the following is a humidity sensor? A. Hygrometer C. Seismoscope B. Gyroscope D. None of these

A. Hygrometer

Which sensors measure the moisture level using humidity? A. Capacitive Sensor C. Both A and B B. Resistive Sensor D. None of these

A. Capacitive Sensor

Which of the following is a motion sensor? A. Piezoelectric sensor C. MPU 6050 B. PIR sensor D. Node MCU

B. PIR sensor

Proximity sensor is used for: A. Sensing humidity C. Sensing heat B. Sensing the presence of nearby objects D. Measuring distance

B. Sensing the presence of nearby objects

The monitoring of machines, gears and objects are achieved by which sensor? A. Humidity sensor C. Touch sensor B. Proximity sensor D. Pressure sensor

B. Proximity sensor

Which proximity sensor detects metal objects? A. Capacitive Proximity Sensor C. Optical Proximity Sensor B. Magnetic Proximity Sensor D. Inductive Proximity Sensor

D. Inductive Proximity Sensor

Which proximity sensor indicates level? A. Capacitive Proximity Sensor C. Optical Proximity Sensor B. Magnetic Proximity Sensor D. Inductive Proximity Sensor

A. Capacitive Proximity Sensor

Which proximity sensor detects positioning of an object? A. Capacitive Proximity Sensor C. Optical Proximity Sensor B. Magnetic Proximity Sensor D. Inductive Proximity Sensor

C. Optical Proximity Sensor

Which device generates output signal when metal objects are either inside or entering into sensing area? A. Capacitive Proximity C. Parallel Proximity B. Magnetic Proximity D. Inductive Proximity

D. Inductive Proximity

Another name for tactile sensor is: A. Humidity sensor C. Touch sensor B. Proximity sensor D. Pressure sensor

C. Touch sensor

ENOB stands for: A. Effective number of bits C. Efficient number of bits B. Effective number of bytes D. Efficient number of bytes

A. Effective number of bits

Resolution is expressed in: A. Bytes C. Word B. Bits D. Nibble

B. Bits

The analog signal is _______ in ________: A. Continuous, frequency C. Discrete, frequency B. Continuous, time D. Discrete, time

B. Continuous, time

What part of solar module should be included such that solar charging is continuous at slower rate even when partially shaded by trees? A. Blocking diode C. Shading diode B. Bypass diode D. Lightning diode

B. Bypass diode

What diode is needed as protection against lightning in solar installations? A. Blocking diode C. Shading diode B. Bypass diode D. Lightning diode

A. Blocking diode

What pin is common in integrated circuits (ICs) A. +12 Vdc input C. Ground B. +5 Vdc output D. Binary output

C. Ground

A kind of IC included as an important part of electronic instruments for gathering speed, velocity and discharge real-time data. A. Voltage reducer C. Sensor B. Timer D. Variable resistor

B. Timer

Which one is an integrated circuit (IC) used in instrumentation and control? A. TD 8062 C. CQ 556 B. ES 8813 D. LM 333

D. LM 333

Which DC voltage is best for remote instrumentation? A. 5 Vdc C. 9 Vdc B. 7 Vdc D. All of these

D. All of these

Transmission of data to a remote line-of-sight point is best done using: A. Fiber optics C. E-mail B. Fax D. Radio frequency

D. Radio frequency

To automate control of irrigation dam gates, what switch is useful in the instrumentation? A. Automatic transfer switch C. Power switch B. Pressure switch D. Time switch

A. Automatic transfer switch

A switch for automatic starting of pumps with sealed water tank in drip irrigation systems. A. Automatic transfer switch C. Power switch B. Pressure switch D. Time switch

B. Pressure switch

A spring, hydraulic or strain-gauge operating device that measures the capacity required in pulling a machine: A. Load cell C. Dynamometer B. Spring scale D. None of these

C. Dynamometer

An instrument used to measure the draft of a plow: A. Dynamometer C. Pressure gauge B. Spring scale D. None of these

A. Dynamometer

The line of pull to determine the drawbar horsepower of a machine is the _____line of pull measured by the drawbar dynamometer. A. Horizontal C. Vertical B. Inclined D. None of these

A. Horizontal

An instrument attached at the end the dynamometer used to determine shaft speed. A. Amplifier C. Tachometer B. Transducer D. None of these

C. Tachometer

Device used to increase the amount of signal (emf) delivered by an instrument sensor so that it can be read by a multimeter that gives the calibrated value such as temperature, torque, etc. A. Amplifier C. Tachometer B. Transducer D. None of these

A. Amplifier

Instrument for measuring the speed of a shaft. A. Odometer C. Tachometer B. Anemometer D. None of these

C. Tachometer

During the test of agricultural machines, shaft speed is measured using: A. Speedometer C. Tachometer B. Velocity meter D. None of these

C. Tachometer

A device used in measuring speed of a wind pump: A. Accelerometer C. Tachometer B. Speedometer D. None of these

C. Tachometer

The sensing instrument made of two dissimilar wires used to measure the temperature of air in a dryer: A. Thermometer wire C. Thermo wire B. Thermocouple wire D. All of these

B. Thermocouple wire

The pressure drop of air-moving devices is usually measured using a: A. Pressure gauge C. Manometer B. Pitot tube D. None of these

C. Manometer

An instrument used to measure the static pressure at the plenum chamber of a dryer: A. Manometer C. Tachometer B. Anemometer D. None of these

A. Manometer

An instrument used to measure the speed of a wind pump: A. Manometer C. Tachometer B. Anemometer D. None of these

B. Anemometer

An instrument used to determine the acidity and alkalinity of a substance: A. Refractrometer C. Moisture meter B. pH meter D. None of these

B. pH meter

An instrument used to measure the amount of water present in a sample. A. Hygrometer C. Moisture meter B. Hydrometer D. All of these

C. Moisture meter

A thermometer used in measuring the temperature of a surface without the sensor touching it. A. Thermocouple wire sensor operated thermometer C. Infrared thermometer B. Bimetallic surface measuring thermometer D. None of these

B. Bimetallic surface measuring thermometer

An instrument used in measuring the velocity of water in a conveyance channel. A. Thermoanemometer C. Current meter B. Anemometer D. None of these

C. Current meter

The velocity of the air passing through the duct of the blower of a dryer is to be determined, what instrument would you recommend to measure the velocity? A. Thermoanemometer C. Thermometer B. Manometer D. None of these

A. Thermoanemometer

Which of the following cannot be used in measuring the velocity of the air? A. Pitot-tube and manometer C. Orifice and manometer B. Anemometer D. All of these

D. All of these

The rate of flow of hot gas is to be measured in a duct. As an Agricultural and Biosystems Engineer, what instrument would you recommend to determine the velocity of the gas? A. Pitot-tube and manometer C. Current meter B. Thermoanemometer D. None of these

A. Pitot-tube and manometer

Air velocity at the air duct can be measured using a manometer by taking the: A. Static pressure C. Velocity and static pressure B. Velocity pressure D. None of these

C. Velocity and static pressure

The amount of current passing through a wire can be measured using: A. Voltmeter C. Hertz meter B. Ammeter D. None of these

B. Ammeter

Voltmeter is connected to a wire in ______ to measure voltage. A. Series C. Series and parallel B. Parallel D. None of these

B. Parallel

The Hertz meter is connected in _______ to measure the cycle of the lines. A. Series C. Series and parallel B. Parallel D. None of these

B. Parallel

AC Clamp meter is connected to a wire in ______ to measure the amperage. A. Series C. Series and parallel B. Parallel D. None of these

D. None of these An AC clamp meter measures amperage without being connected in series or parallel.

In order to measure the power input in a motor, the ____ are measured and then multiplied with the power factor. A. Voltage and hertz C. Voltage and current B. Current and hertz D. None of these

C. Voltage and current

The unit of noise level of a sound meter is expressed in: A. Hertz C. % loudness B. Decibels D. None of these

B. Decibels

When measurement needs to be done to gather sets of data in a defined period of time, what instrument would you recommend to be included in your instrumentation set-up as an Agricultural and Biosystems Engineer? A. Data encoder C. Data logger B. Data compiler D. None of these

C. Data logger

An electronic device that records data over time? A. Data encoder C. Data logger B. Data compiler D. None of these

c. data logger

Which thermocouple-wire sensor has the ability to measure higher temperature (up to 1260°C)? A. Type C C. Type K B. Type J D. None of these

C. Type K

The low-temperature thermocouple wire sensor. A. Type T C. Type K B. Type J D. None of these

A. Type T

A thermocouple wire made of copper and constantan wires. A. Type T C. Type K B. Type J D. None of these

A. Type T

A customized device in which all the instruments are set to facilitate testing of a machine. A. Test rig C. Test instrument B. Test duct D. None of these

A. Test rig

During testing of agricultural machines, thermometer sensors should be partially shielded to minimize: A. Mechanical damage on thermometer sensor C. Error on the effect of heat of radiation B. Error from heat of conduction from wall of the machine D. None of these

C. Error on the effect of heat of radiation

Instrument for measuring furnace temperature. A. Glass bulb thermometer C. Thermocouple wire thermometer B. Dial type bimetallic thermometer D. None of these

C. Thermocouple wire thermometer

It is an instrument used for testing specific gravity of a liquid. A. Hydrometer C. Viscometer B. Hygrometer D. Density meter

A. Hydrometer

The microcontroller used in Arduino UNO. A. ATmega328p C. ATmega32114 B. ATmega2560 D. AT91SAM3x8E

A. ATmega328p A. ATmega328p - arduino uno C. ATmega32114 - arduino mega B. ATmega2560 - non existent (?) D. AT91SAM3x8E - arduino due

Which is the software or a programming language used for controlling of Arduino? A. C Languages C. Assembly Language B. JAVA D. Any Language

D. Any Language

The correct execution process of an Arduino code. A. Editor – Preprocessor – Compiler C. Compiler – Preprocessor – Editor B. Preprocessor – Editor – Compiler D. Editor – Compiler – Preprocessor

A. Editor – Preprocessor – Compiler