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Latest NFL JE Assistant Instrumentation Exam Question (Objective Questions), MCQ in English

Subjects : Instrumentation, General English, Quantitative Aptitude, Reasoning, General Knoweldge/Awareness

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Instrumentation

Question 1Single Answer
Which of the following devices is primarily used to measure pressure?
  1. A
    Thermocouple
  2. B
    Manometer
  3. C
    Tachometer
  4. D
    Hygrometer
Question 2Single Answer
In instrumentation, a transducer is a device that:
  1. A
    Measures temperature
  2. B
    Converts one form of energy into another
  3. C
    Increases signal strength
  4. D
    Filters electrical noise
Question 3Single Answer
Which type of sensor is used to measure temperature?
  1. A
    Strain gauge
  2. B
    Thermocouple
  3. C
    Flowmeter
  4. D
    Photodiode
Question 4Single Answer
The unit of pressure in the International System of Units (SI) is:
  1. A
    Newton
  2. B
    Pascal
  3. C
    Joule
  4. D
    Volt
Question 5Single Answer
A flowmeter is used to measure:
  1. A
    Temperature
  2. B
    Pressure
  3. C
    Flow rate of fluids
  4. D
    Humidity
Question 6Single Answer
Which instrument is used to measure electrical current?
  1. A
    Ammeter
  2. B
    Voltmeter
  3. C
    Ohmmeter
  4. D
    Oscilloscope
Question 7Single Answer
RTD stands for:
  1. A
    Resistance Temperature Detector
  2. B
    Resistor Type Device
  3. C
    Resistance Torque Device
  4. D
    Random Time Delay
Question 8Single Answer
Which of the following devices is commonly used to measure liquid level?
  1. A
    Thermistor
  2. B
    Ultrasonic level sensor
  3. C
    Strain gauge
  4. D
    Tachometer
Question 9Single Answer
In instrumentation, calibration is the process of:
  1. A
    Adjusting instruments for accuracy
  2. B
    Setting the frequency of signals
  3. C
    Measuring humidity
  4. D
    Checking electrical resistance
Question 10Single Answer
A device that measures rotational speed is called a:
  1. A
    Manometer
  2. B
    Tachometer
  3. C
    Hygrometer
  4. D
    Accelerometer
Question 11Single Answer
Strain gauges are typically used to measure:
  1. A
    Temperature
  2. B
    Pressure
  3. C
    Displacement or strain
  4. D
    Humidity
Question 12Single Answer
Which type of transducer is commonly used to convert mechanical displacement to an electrical signal?
  1. A
    RTD
  2. B
    LVDT (Linear Variable Differential Transformer)
  3. C
    Photodiode
  4. D
    Thermocouple
Question 13Single Answer
What does a pH meter measure?
  1. A
    Temperature
  2. B
    Acidity or alkalinity
  3. C
    Conductivity
  4. D
    Pressure
Question 14Single Answer
The term "dead zone" in instrumentation refers to:
  1. A
    The maximum range of an instrument
  2. B
    A range where no response occurs to a change in input
  3. C
    The threshold limit of a sensor
  4. D
    An overload condition in an instrument
Question 15Single Answer
Which device measures the humidity in the air?
  1. A
    Hygrometer
  2. B
    Manometer
  3. C
    Thermocouple
  4. D
    Barometer
Question 16Single Answer
The primary purpose of a PID controller in instrumentation is:
  1. A
    To measure humidity
  2. B
    To control process variables
  3. C
    To detect errors in instrumentation
  4. D
    To amplify signals
Question 17Single Answer
Which component is used to isolate instrumentation signals?
  1. A
    Diode
  2. B
    Relay
  3. C
    Transformer
  4. D
    Optical isolator
Question 18Single Answer
In instrumentation, what does the term "span" refer to?
  1. A
    The range of input values an instrument can measure
  2. B
    The maximum output of an instrument
  3. C
    The minimum detectable signal
  4. D
    The bandwidth of a signal
Question 19Single Answer
Thermistors are primarily used for measuring:
  1. A
    Pressure
  2. B
    Temperature
  3. C
    Flow rate
  4. D
    Humidity
Question 20Single Answer
In a control system, feedback is used to:
  1. A
    Measure humidity
  2. B
    Stabilize and control system output
  3. C
    Increase signal strength
  4. D
    Adjust instrument calibration
Question 21Single Answer
Which instrument is used to measure small voltages?
  1. A
    Voltmeter
  2. B
    Galvanometer
  3. C
    Ammeter
  4. D
    Oscilloscope
Question 22Single Answer
A device that converts an electrical signal to a physical movement is called a:
  1. A
    Transducer
  2. B
    Actuator
  3. C
    Sensor
  4. D
    Detector
Question 23Single Answer
Which device measures atmospheric pressure?
  1. A
    Manometer
  2. B
    Barometer
  3. C
    Hygrometer
  4. D
    Thermocouple
Question 24Single Answer
The process of ensuring instruments provide accurate measurements is called:
  1. A
    Resolution
  2. B
    Calibration
  3. C
    Sensitivity
  4. D
    Compensation
Question 25Single Answer
In a thermocouple, the EMF generated is proportional to:
  1. A
    Pressure
  2. B
    Voltage
  3. C
    Temperature difference
  4. D
    Current
Question 26Single Answer
Which instrument uses the Hall effect to measure magnetic fields?
  1. A
    Hall effect sensor
  2. B
    Strain gauge
  3. C
    Thermocouple
  4. D
    LVDT
Question 27Single Answer
In instrumentation, the term "accuracy" refers to:
  1. A
    The speed of response
  2. B
    The closeness of a measured value to the actual value
  3. C
    The range of measurement
  4. D
    The ability to detect small changes
Question 28Single Answer
Which type of instrument would measure electrical resistance?
  1. A
    Ammeter
  2. B
    Voltmeter
  3. C
    Ohmmeter
  4. D
    Thermometer
Question 29Single Answer
The Wheatstone bridge is commonly used to measure:
  1. A
    Voltage
  2. B
    Resistance
  3. C
    Current
  4. D
    Capacitance
Question 30Single Answer
In industrial instrumentation, PLC stands for:
  1. A
    Process Level Controller
  2. B
    Programmable Logic Controller
  3. C
    Primary Load Circuit
  4. D
    Power Line Communication
Question 31Single Answer
Instrumentation in industry primarily helps in:
  1. A
    Reducing costs
  2. B
    Measuring, monitoring, and controlling processes
  3. C
    Improving aesthetics
  4. D
    Marketing products
Question 32Single Answer
One of the main benefits of using instrumentation in an industrial process is:
  1. A
    Increased labor cost
  2. B
    Higher product quality and consistency
  3. C
    Decreased automation
  4. D
    Lower reliability
Question 33Single Answer
Which of the following is a direct impact of accurate instrumentation on industrial operations?
  1. A
    Increased waste
  2. B
    Improved process efficiency
  3. C
    Reduced production speed
  4. D
    Unstable operations
Question 34Single Answer
The role of instrumentation in safety monitoring is:
  1. A
    Insignificant in high-risk industries
  2. B
    Crucial for detecting hazardous conditions
  3. C
    Only applicable in medical industries
  4. D
    Not applicable to quality control
Question 35Single Answer
What is the primary advantage of automation through instrumentation in industrial settings?
  1. A
    Increased need for human supervision
  2. B
    Higher accuracy and reduced human error
  3. C
    Higher error rates
  4. D
    Increased manual operations
Question 36Single Answer
Which aspect of production does instrumentation significantly enhance?
  1. A
    Marketing
  2. B
    Operational speed and efficiency
  3. C
    Office administration
  4. D
    Product packaging
Question 37Single Answer
Instrumentation is essential in industries because it helps to:
  1. A
    Track raw material availability
  2. B
    Monitor and control complex processes automatically
  3. C
    Develop new marketing strategies
  4. D
    Increase employee hiring
Question 38Single Answer
Which type of sensor is commonly used to ensure temperature control in industrial processes?
  1. A
    Thermocouple
  2. B
    Strain gauge
  3. C
    Photodiode
  4. D
    Tachometer
Question 39Single Answer
Instrumentation improves productivity in industries by:
  1. A
    Reducing the need for any maintenance
  2. B
    Ensuring precise measurements and controls
  3. C
    Increasing paperwork
  4. D
    Limiting automation
Question 40Single Answer
Which of the following is a key function of instrumentation in manufacturing?
  1. A
    Designing packaging materials
  2. B
    Measuring and controlling process variables like temperature and pressure
  3. C
    Developing advertisements
  4. D
    Managing office supplies
Question 41Single Answer
In the context of safety, instrumentation systems are often used to:
  1. A
    Increase production quotas
  2. B
    Detect hazardous conditions and prevent accidents
  3. C
    Improve customer satisfaction surveys
  4. D
    Monitor employee attendance
Question 42Single Answer
Which of the following industries heavily relies on instrumentation for process control?
  1. A
    Agriculture
  2. B
    Pharmaceuticals
  3. C
    Retail
  4. D
    Education
Question 43Single Answer
One of the reasons for using instrumentation in chemical plants is to:
  1. A
    Avoid maintenance activities
  2. B
    Monitor critical parameters for safety and efficiency
  3. C
    Increase fuel usage
  4. D
    Hire more employees
Question 44Single Answer
In oil and gas industries, instrumentation is essential for:
  1. A
    Customer engagement
  2. B
    Process automation and control
  3. C
    Decreasing safety protocols
  4. D
    Marketing
Question 45Single Answer
Flow meters in industrial settings are used to measure:
  1. A
    Temperature
  2. B
    Electrical resistance
  3. C
    Fluid flow rate
  4. D
    Sound levels
Question 46Single Answer
One of the purposes of using a control valve in industry is:
  1. A
    To change product color
  2. B
    To regulate the flow of fluids or gases in processes
  3. C
    To increase vibration in machinery
  4. D
    To slow down manufacturing processes
Question 47Single Answer
In an industrial setting, a feedback system is used to:
  1. A
    Measure process efficiency only
  2. B
    Maintain stable and controlled operations
  3. C
    Increase manual operation
  4. D
    Monitor marketing trends
Question 48Single Answer
Instrumentation helps reduce operational costs by:
  1. A
    Increasing labor requirements
  2. B
    Reducing resource wastage and improving efficiency
  3. C
    Decreasing production speed
  4. D
    Limiting automation
Question 49Single Answer
The primary role of instrumentation in a manufacturing plant is to:
  1. A
    Track employee attendance
  2. B
    Monitor, control, and improve production processes
  3. C
    Improve product design
  4. D
    Decrease automation levels
Question 50Single Answer
In power plants, instrumentation is crucial for:
  1. A
    Managing customer service
  2. B
    Monitoring pressure, temperature, and power generation levels
  3. C
    Marketing energy services
  4. D
    Building infrastructure
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