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Engineering Metrology
Engineering Metrology Interview
Quiz 1
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Q.1
What is the shape of the tool maker’s flats?
a) Circular
b) Rectangular
c) Square
d) Triangular
Q.2
Which of the following is not true about tool maker’s flats?
a) Tool maker’s flats should be free from inclusions
b) Tool maker’s flats are of less hardness
c) Working surfaces are produced by lapping
d) Should be located in a stirred atmosphere
Q.3
Why are shallow grooves provided in larger flats?
a) To minimize the possibilities of uneven hardening
b) For design purpose
c) To maintain high accuracy for a longer period
d) To make them lighter
Q.4
Which of the following is not true about the requirements of material selection for tool maker’s flats?
a) Suitable surface for the wringing purpose
b) High degree of rigidity
c) Wear resistance
d) Absorb radiant heat
Q.5
What is the tool maker’s flat size which generally uses both the faces as a working surface?
a) 30 to 45 mm
b) 50 to 75 mm
c) 75 to 100 mm
d) 100 to 200 mm
Q.6
Which of the following hardness is given by Solid steel tool maker’s flats?
a) 93HRC
b) 83HRC
c) 73HRC
d) 63HRC
Q.7
What is the minimum thickness of top in a high precision surface plate?
a) 20 mm for 350 mm dia
b) 25 mm for 250 mm dia
c) 30 mm for 250 mm dia
d) 20 mm for 250 mm dia
Q.8
What is the advantage of granite over cast iron in making surface plates?
a) Reflects radiant heat
b) Won’t rust by moisture
c) Strength for given weight is high
d) No need of inserts and fasteners
Q.9
Which of the following is true regarding high precision surface plates?
a) The top of high precision plate projects about 32 mm beyond the framing
b) The top of high precision plate projects about 32 mm below the framing
c) The top of high precision plate projects about 12 mm beyond the framing
d) The top of high precision plate projects about 12 mm below the framing
Q.10
What is the minimum total depth in high precision surface plates formm dia (nominal size)?
a) 60
b) 70
c) 80
d) 90
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