1
GATE PI 2011
MCQ (Single Correct Answer)
+2
-0.6
To measure the effective diameter of an external metric thread (included angle is $$60$$ degrees) of $$3.5$$ $$mm$$ pitch, a cylindrical standard of $$30.5$$ $$mm$$ diameter and two wires of $$2$$ $$mm$$ diameter each are used. The micrometer reading over the standard and over the wires are $$16.532$$ $$mm$$ and $$15.398$$ $$mm$$ respectively. The effective diameter (in $$mm$$) of the thread is
A
$$33.366$$
B
$$30.397$$
C
$$29.366$$
D
$$26.397$$
2
GATE PI 2010
MCQ (Single Correct Answer)
+2
-0.6
A small bore is designated as $$25H7.$$ The lower (minimum) and upper (maximum) limits of the bore are $$25.000mm$$ and $$25.021$$ respectively. When the bore is designated as $$25H8,$$ then the upper limit is $$25.033mm.$$ When the bore is designated as $$25H6,$$ then the upper limit of the bore in $$mm$$ is
A
$$25.001$$
B
$$25.005$$
C
$$25.009$$
D
$$25.013$$
3
GATE PI 2009
MCQ (Single Correct Answer)
+2
-0.6
An autocollimator is used to
A
Measure small angular displacements on flat surfaces
B
Compare known and unknown dimensions
C
Measure the flatness error
D
Measure roundness error between centers
4
GATE PI 2009
MCQ (Single Correct Answer)
+2
-0.6
Match the following GATE PI 2009 Metrology - Metrology and Inspection Question 3 English
A
$$P - 4,\,\,Q - 3,\,\,R - 1,\,\,S - 2$$
B
$$P - 1,\,\,Q - 2,\,\,R - 3,\,\,S - 4$$
C
$$P - 1,\,\,Q - 4,\,\,R - 3,\,\,S - 2$$
D
$$P - 4,\,\,Q - 3,\,\,R - 2,\,\,S - 1$$
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