DIGITAL INSTRUMENTS

Other Chapters

• Q1: What are Digital Instruments?
  Ans: Digital instruments are measuring devices that display readings in digital form (numbers) on a screen instead of analog scales.
• Q2: Name some Digital Instruments.
  Ans: Some digital instruments are:

  • ➔ Digital Micrometer
  • ➔ Digital Caliper
  • ➔ Digital Depth Gauge
  • ➔ Digital Height Gauge
  • ➔ Digital Indicator
  • ➔ Digital Level
• Q3: What is a Digital Micrometer?
  Ans: A digital micrometer is a precise measuring instrument that measures small dimensions and shows the reading on a digital display.
• Q4: State the uses of Digital Micrometer.
  Ans: Uses of digital micrometer are:

  • ➔ Measuring thickness of small parts
  • ➔ Measuring diameter of wires
  • ➔ High precision measurements
• Q5: What is a Digital Caliper?
  Ans: A digital caliper is a measuring instrument used to measure internal, external, and depth dimensions with a digital display.
• Q6: What is the working principle of a Digital Micrometer?
  Ans: It works on the screw principle.
  The rotation of the spindle is converted into linear movement.
  The movement is sensed electronically and displayed as a digital reading.
• Q7: What is the working principle of a Digital Caliper?
  Ans: It works on a linear encoder system.
  The movement of the sliding jaw is detected electronically.
  The measurement is displayed on the digital screen.
• Q8: State the uses of Digital Caliper.
  Ans: Uses of digital caliper are:

  • ➔ Measuring internal dimensions
  • ➔ Measuring external dimensions
  • ➔ Measuring depth
  • ➔ Accurate and quick measurements
• Q9: What is a Digital Depth Gauge?
  Ans: A digital depth gauge is an instrument used to measure the depth of holes, slots, or recesses with a digital display.
• Q10: What is the working principle of a Digital Depth Gauge?
  Ans: It works on a linear measurement system.
  The probe moves vertically into the depth.
  The movement is converted into a digital reading.
• Q11: State the uses of Digital Depth Gauge.
  Ans: Uses of digital depth gauge are:

  • ➔ Measuring depth of holes
  • ➔ Measuring slots and grooves
  • ➔ Accurate depth measurement
• Q12: What is a Digital Height Gauge?
  Ans: A digital height gauge is used to measure vertical distances from a reference surface with high accuracy.
• Q13: What is the working principle of a Digital Height Gauge?
  Ans: It works on a linear encoder system.
  The vertical movement is sensed electronically.
  The measurement is shown on a digital display.
• Q14: State the uses of Digital Height Gauge.
  Ans: Uses of digital height gauge are:

  • ➔ Measuring height of components
  • ➔ Marking lines on workpieces
  • ➔ Inspection work
• Q15: What is a Digital Indicator?
  Ans: A digital indicator is an instrument used to measure small linear displacements and display them digitally.
• Q16: What is the working principle of a Digital Indicator?
  Ans: It works on an electronic sensing system.
  Small movements are detected by a probe.
  These movements are converted into digital values.
• Q17: State the uses of Digital Indicator.
  Ans: Uses of digital indicator are:

  • ➔ Checking alignment
  • ➔ Measuring small variations
  • ➔ Inspection of machine parts
• Q18: What is a Digital Level?
  Ans: A digital level is an instrument used to measure angles or level surfaces with a digital display.
• Q19: What is the working principle of a Digital Level?
  Ans: It works using electronic sensors.
  The tilt or angle is detected by the sensor.
  The result is displayed digitally.
• Q20: State the uses of Digital Level.
  Ans: Uses of digital level are:

  • ➔ Checking horizontal and vertical alignment
  • ➔ Measuring angles
  • ➔ Installation work
• Q21: What is the working principle of a Digital Read Out?
  Ans: A Digital Read Out works by receiving signals from sensors or encoders.
  These signals are processed electronically.
  The result is displayed as numerical values on the screen.
• Q22: What is a Digital Read Out?
  Ans: A Digital Read Out (DRO) is an electronic display system that shows measurements from machines in digital form.
• Q23: What is a Display Unit?
  Ans: A display unit is a part of a digital instrument that shows the measurement readings in numerical form.
• Q24: State the functions of a Display Unit.
  Ans: Functions of a display unit are:

  • ➔ Displays measurement values
  • ➔ Shows clear and accurate readings
  • ➔ Helps in easy interpretation
• Q25: State the uses of Digital Read Out.
  Ans: Uses of Digital Read Out are:

  • ➔ Accurate measurement display
  • ➔ Used in machines like milling and lathe
  • ➔ Reduces human reading errors
• Q26: What does DRO stand for?
  Ans: DRO stands for Digital Read Out.
• Q27: What does LCD stand for?
  Ans: LCD stands for Liquid Crystal Display.