An optical gauge works on the principle of
A) Dispersion of light rays
B) Polarisation of light rays
C) Interference of light rays
D) Reflection of light rays
E) Refraction of light rays
Correct Answer:
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Q20: For the same capacity which of the
Q21: For centreless grinding the surface speed is
A)1200
Q22: The rating of solder iron normally used
Q23: The process of bringing out the lustre
Q24: During soldering
A)Borax is used a flux
B)Solder iron
Q26: Antioch is
A)A soft soldering process
B)A process for
Q27: A gate is the
A)Vent hole to allow
Q28: Shrinkage of cast iron on solidification is
Q29: Machinability is affected by
A)tool geometry and material
B)cutting
Q30: Two 3 mm thick MS sheets are
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