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MCQs

Total Questions : 1798 | Page 9 of 180 pages
Question 81. The factor responsible for the formation of continuous chips with built up edge is
  1.    Low cutting speed and large rake angle
  2.    Low cutting speed and small rake angle
  3.    High cutting speed and large rake angle
  4.    High cutting speed and small rake angle
 Discuss Question
Answer: Option B. -> Low cutting speed and small rake angle
Question 82. The material which on machining produces chips with built up edge is
  1.    Brittle material
  2.    Tough material
  3.    Hard material
  4.    Ductile material
 Discuss Question
Answer: Option D. -> Ductile material
Question 83. A 15 mm drilling machine means that it can drill a hole
  1.    Of maximum diameter 15 mm
  2.    In 15 mm thick plates
  3.    None of these
 Discuss Question
Answer: Option A. -> Of maximum diameter 15 mm
Question 84. The binding material used in cemented carbide tools is
  1.    Tungsten
  2.    Chromium
  3.    Silicon
  4.    Cobalt
 Discuss Question
Answer: Option D. -> Cobalt
Question 85. In the relation VTn = C, the value of n for ceramic tools is
  1.    0.1 to 0.2
  2.    0.20 to 0.25
  3.    0.25 to 0.40
  4.    0.40 to 0.55
 Discuss Question
Answer: Option D. -> 0.40 to 0.55
Question 86. For machining a cast iron workpiece by a high speed steel tool, the average cutting speed is
  1.    10 m/min
  2.    15 m/min
  3.    22 m/min
  4.    30 m/min
 Discuss Question
Answer: Option C. -> 22 m/min
Question 87. The specific cutting energy used for establishing the machinability of the metal depends upon its
  1.    Coefficient of friction
  2.    Micro-structure
  3.    Work hardening characteristics
  4.    All of these
 Discuss Question
Answer: Option D. -> All of these
Question 88. For machining a mild steel workpiece by a high speed steel tool, the average cutting speed is
  1.    5 m/min
  2.    10 m/min
  3.    15 m/min
  4.    30 m/min
 Discuss Question
Answer: Option D. -> 30 m/min
Question 89. The cutting speed of a drill depends upon the
  1.    Material of drill
  2.    Type of material to be drilled
  3.    Quality of surface finish desired
  4.    All of these
 Discuss Question
Answer: Option D. -> All of these
Question 90. The size of abrasive grain required in a grinding wheel depends upon the
  1.    Amount of material to be removed
  2.    Hardness of material being ground
  3.    Finish desired
  4.    All of these
 Discuss Question
Answer: Option B. -> Hardness of material being ground

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