Q1: Define Gauges.
Ans: Gauges are inspection tools used to check whether a manufactured part is within specified limits of size without giving exact measurement.
Q2: State the purpose of Gauges.
Ans: The purpose of gauges is:
- ➔ To check dimensional accuracy of parts
- ➔ To ensure interchangeability
- ➔ To speed up inspection process
- ➔ To maintain quality control in production
Q3: What is Gauge Material?
Ans: Gauge material is the material used for manufacturing gauges that must have high hardness, wear resistance, and dimensional stability.
Q4: State four properties of Gauge material.
Ans: Properties are:
- ➔ High hardness
- ➔ High wear resistance
- ➔ Dimensional stability
- ➔ Corrosion resistance
Q5: What is Gauging Force?
Ans: Gauging force is the small amount of force applied while checking a part with a gauge to ensure proper contact without causing damage.
Q6: State some measures taken for the care of gauges.
Ans: Care measures are:
- ➔ Keep gauges clean and dry
- ➔ Apply anti-rust oil
- ➔ Handle carefully to avoid damage
- ➔ Store in proper boxes
Q7: Name some materials of Gauges.
Ans: Materials used for gauges are:
- ➔ Hardened steel
- ➔ Tool steel
- ➔ Carbide
- ➔ Stainless steel
Q8: Define Plain Gauges.
Ans: Plain gauges are simple gauges used to check plain dimensions such as diameter, length, or thickness of a workpiece.
Q9: What are Standard Gauges?
Ans: Standard gauges are gauges that are manufactured with high accuracy and used as reference standards for comparison.
Q10: State the purpose of Standard Gauges.
Ans: Purpose is:
- ➔ Used as reference for calibration
- ➔ Checking accuracy of other gauges
- ➔ Maintaining standards in measurement
Q11: State 4 advantages of Standard gauges.
Ans: Advantages are:
- ➔ High accuracy
- ➔ Long life
- ➔ Reliable measurements
- ➔ Useful for calibration
Q12: State 2 disadvantages of Standard gauges.
Ans: Disadvantages are:
- ➔ Expensive
- ➔ Requires careful handling
Q13: State the limitations of Standard gauges.
Ans: Limitations are:
- ➔ Not suitable for rough workshop use
- ➔ Limited to reference purposes only
Q14: What are Limit or Go and Not Go Gauges?
Ans: Limit or Go and Not Go gauges are inspection gauges used to check whether a part is within permissible limits of size.
Q15: State the purpose of Limit or Go and Not Go Gauges.
Ans: Purpose is:
- ➔ Quick inspection of parts
- ➔ Ensuring parts are within tolerance limits
- ➔ Mass production checking
Q16: State 4 advantages of Limit or Go and Not Go gauges.
Ans: Advantages are:
- ➔ Fast inspection
- ➔ No skilled operator required
- ➔ Simple to use
- ➔ Suitable for mass production
Q17: State 2 disadvantages of Limit or Go and Not Go gauges.
Ans: Disadvantages are:
- ➔ Does not give actual measurement
- ➔ Wear and tear affects accuracy
Q18: State the limitations of Limit or Go and Not Go gauges.
Ans: Limitations are:
- ➔ Only tells pass or fail condition
- ➔ Not suitable for precise measurement
Q19: What are Workshop or Working Gauges?
Ans: Workshop or working gauges are gauges used directly in production shops for quick checking of dimensions of manufactured parts.
Q20: State the purpose of Workshop or Working Gauges.
Ans: Purpose is:
- ➔ To check dimensions during production
- ➔ To ensure parts are within limits
- ➔ To speed up inspection in workshops
Q21: State 4 advantages of Workshop or Working gauges.
Ans: Advantages are:
- ➔ Fast inspection
- ➔ Easy to use
- ➔ Low cost
- ➔ Suitable for mass production
Q22: State 2 disadvantages of Workshop or Working gauges.
Ans: Disadvantages are:
- ➔ Less accuracy than master gauges
- ➔ Wear and tear affects performance
Q23: State the limitations of Workshop or Working gauges.
Ans: Limitations are:
- ➔ Not suitable for high precision work
- ➔ Only used for quick checking
Q24: What are Inspection Gauges?
Ans: Inspection gauges are gauges used in quality control departments to check the accuracy of manufactured parts.
Q25: State the purpose of Inspection Gauges.
Ans: Purpose is:
- ➔ To ensure product quality
- ➔ To verify production accuracy
- ➔ To reject defective parts
Q26: State 4 advantages of Inspection gauges.
Ans: Advantages are:
- ➔ High reliability in inspection
- ➔ Ensures quality control
- ➔ Easy to use
- ➔ Reduces production errors
Q27: State 2 disadvantages of Inspection gauges.
Ans: Disadvantages are:
- ➔ Costly compared to working gauges
- ➔ Requires careful handling
Q28: State the limitations of Inspection gauges.
Ans: Limitations are:
- ➔ Not used for production operations
- ➔ Limited to inspection only
Q29: What is the Reference of Master Gauges?
Ans: Reference or master gauges are highly accurate gauges used as a standard reference for calibrating other gauges.
Q30: State the purpose of Reference of Master Gauges.
Ans: Purpose is:
- ➔ To provide standard reference
- ➔ To calibrate other gauges
- ➔ To maintain measurement accuracy
Q31: State 4 advantages of Reference of Master gauges.
Ans: Advantages are:
- ➔ Very high accuracy
- ➔ Long-term reliability
- ➔ Used for calibration standards
- ➔ Ensures uniform measurements
Q32: State 2 disadvantages of Reference of Master gauges.
Ans: Disadvantages are:
- ➔ Very expensive
- ➔ Requires controlled environment
Q33: State the limitations of Reference of Master gauges.
Ans: Limitations are:
- ➔ Not suitable for workshop use
- ➔ Only used for calibration purposes
Q34: What are Plug Gauges?
Ans: Plug gauges are plain limit gauges used to check the internal dimensions (holes) of a workpiece to ensure they are within specified limits.
Q35: State the purpose of Plug Gauges.
Ans: Purpose is:
- ➔ To check internal diameter of holes
- ➔ To ensure GO and NO-GO conditions
- ➔ To maintain dimensional accuracy in production
Q36: State 4 advantages of Plug gauges.
Ans: Advantages are:
- ➔ Simple and easy to use
- ➔ Quick inspection
- ➔ High reliability in mass production
- ➔ No skilled operator required
Q37: State 2 disadvantages of Plug gauges.
Ans: Disadvantages are:
- ➔ Does not give actual measurement
- ➔ Wear affects accuracy over time
Q38: State the limitations of Plug gauges.
Ans: Limitations are:
- ➔ Only indicates pass or fail condition
- ➔ Not suitable for precise measurement
Q39: What are Ring Gauges?
Ans: Ring gauges are limit gauges used to check the external diameter of cylindrical workpieces like shafts.
Q40: State the purpose of Ring Gauges.
Ans: Purpose is:
- ➔ To check outer diameter of shafts
- ➔ To ensure GO and NO-GO limits
- ➔ To control dimensional accuracy
Q41: State 4 advantages of Ring gauges.
Ans: Advantages are:
- ➔ Fast inspection
- ➔ High accuracy in checking
- ➔ Easy to use
- ➔ Suitable for mass production
Q42: State 2 disadvantages of Ring gauges.
Ans: Disadvantages are:
- ➔ Expensive to manufacture
- ➔ Wear reduces accuracy
Q43: State the limitations of Ring gauges.
Ans: Limitations are:
- ➔ Only used for external dimensions
- ➔ Not suitable for all shapes
Q44: What are Snap Gauges?
Ans: Snap gauges are limit gauges used to check external dimensions such as thickness or diameter by allowing the workpiece to `"snap`" through.
Q45: State the purpose of Snap Gauges.
Ans: Purpose is:
- ➔ To check external dimensions quickly
- ➔ To ensure size limits in mass production
- ➔ To improve inspection speed
Q46: State 2 advantages of Snap gauges.
Ans: Advantages are:
- ➔ Very fast inspection
- ➔ Easy to operate
Q47: What are Radius Gauges?
Ans: Radius gauges are precision tools used to check and measure the radius of curved surfaces or edges of a workpiece.
Q48: State the purpose of Radius Gauges.
Ans: Purpose is:
- ➔ To check internal and external radii
- ➔ To ensure correct curvature of parts
- ➔ To inspect rounded edges in manufacturing
Q49: State 2 advantages of Radius gauges.
Ans: Advantages are:
- ➔ Quick checking of radius
- ➔ Easy to use with high accuracy
Q50: What is Wire gauge?
Ans: Wire gauge is a measuring instrument used to determine the diameter or thickness of wires.
Q51: What is an Engineer's gauge?
Ans: An engineer’s gauge is a general measuring and marking tool used in workshops for layout and inspection work.
Q52: What is Screw Pitch gauge?
Ans: A screw pitch gauge is a tool used to measure the pitch (distance between threads) of screws or bolts.
Q53: What is a Feeler gauge?
Ans: A feeler gauge is a set of thin metal strips used to measure small gaps or clearances between parts.
Q54: What is the thickness gauge?
Ans: A thickness gauge is a measuring instrument used to measure the thickness of materials like sheets, plates, or films.
Q55: What is Pin gauge?
Ans: A pin gauge is a cylindrical precision tool used to check hole diameters and calibrate measuring instruments.
Q56: State the uses of Angle Gauges.
Ans: Uses are:
- ➔ Measuring angles accurately
- ➔ Checking angular surfaces
- ➔ Calibration of angle measuring tools
Q57: What is the standard temperature in the metrology lab?
Ans: The standard temperature in a metrology lab is 20°C.
Q58: What is Gauge Tolerance?
Ans: Gauge tolerance is the permissible variation in the size of a gauge from its standard value.
Q59: What is a Telescoping gauge?
Ans: A telescoping gauge is a measuring tool used to measure internal dimensions like holes and slots by expanding inside the workpiece.
