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.
