This set of Engineering Metrology Multiple Choice Questions & Answers (MCQs) focuses on “Slip Gauges Accessories”.
1. Which of the following is not a slip gauge accessory?
a) Measuring jaws
b) Holder
c) Rod clamp
d) Base
View Answer
Explanation: Slip gauge accessories are measuring jaws, holder, base and scribing & centre point. Field of application of slip gauges is extended by using these accessories.
2. How many types of measuring jaws are present?
a) 1
b) 2
c) 3
d) 4
View Answer
Explanation: There are two types of measuring jaws i.e. Type A and Type B. Type A is for both internal and external measurement and type B is for external measurement only.
3. What is the error in overall dimension when a pair of jaws wrung together?
a) Should not exceed ± 0.0007 mm
b) Less than ± 0.0001 mm
c) Should not exceed ± 0.0001 mm
d) Should not exceed ± 0.001 mm
View Answer
Explanation: When a pair of jaws wrung, overall dimension error should not exceed ± 0.0001 mm.
4. Which of the option is correct for given statements about measuring jaws types?
Statement 1: Nominal sizes of measuring jaws are engraved on front end face.
Statement 2: In Type B measuring jaws, no dimension is important.
a) Only statement 1 is true
b) Only statement 2 is true
c) Both the statements are true
d) Both the statements are not true
View Answer
Explanation: The most important dimension is the measuring jaw size. In Type B, the most important part is the wringing face not the dimensions.
5. Which of the following is the range in which holder is available?
a) 0 to 60mm
b) 200 to 250mm
c) 250 to 350mm
d) 350 to 400mm
View Answer
Explanation: Holders are available in three ranges i.e. 0-60mm, 50-110mm and 100-210mm.
6. How much deviation in height of base is acceptable from marked dimension?
a) ± 0.001 mm
b) ± 0.007 mm
c) ± 0.0007 mm
d) ± 0.0015 mm
View Answer
Explanation: Height of base is accepted within ± 0.0007 mm deviation from the marked dimension. The base should remain stable when used with the longest size holder.
7. What is the value of hardness for slip gauge accessories?
a) 600 HV
b) 700 HV
c) 750 HV
d) 800 HV
View Answer
Explanation: Steel is used to make slip gauges and should be defect free. It should be hardened uniformly up to the minimum hardness of 800 HV.
8. Which of the following option is correct for given statements?
Statement 1: Slip gauge and its accessories can be used as a limit gauge.
Statement 2: Slip gauge and accessories can be used for the measurement of plug gauge but not for ring gauges.
a) T, F
b) F, F
c) T, T
d) F, T
View Answer
Explanation: They can be used as a temporary limit gauge. They are used for the measurement of a ring and plug gauges, inspection of precision equipment and for marking out tools etc.
9. What is the value of flatness for the surface upon which slip gauges are wrung?
a) 0.0001 mm
b) 0.001 mm
c) 0.01 mm
d) 0.1 mm
View Answer
Explanation: Surface should be flat within 0.0001 mm and parallel to the base within 0.0002 mm.
10. Which of the following is incorrect about slip gauge accessories?
a) Sides of the base are relieved
b) Holder holds rigidly the combination of slip gauges
c) Slip gauge accessories are made from suitable hardened steel
d) There is no sliding movement of slip gauges in wringing
View Answer
Explanation: The sides of base are relieved to provide a convenient finger grip. In wringing operation, first the two surfaces should be slided transversely then twisted together.
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