Multiple Choice questions Practice Tests Production Engineering - Set 27 - ObjectiveBooks
Multiple Choice questions Practice Tests Production Engineering - Set 27

Multiple Choice questions Practice Tests Production Engineering - Set 27

Practice Test: Question Set - 27

1. A push broach as compared to pull broach
    (A) Has less number of teeth
    (B) Is short and stocky
    (C) Removes less material for each pass of the tool
    (D) All of the above
2. The tool life is affected by
    (A) Depth of cut
    (B) Cutting speed
    (C) Feed
    (D) All of these
3. Hard and tough materials like cast iron should be turned at
    (A) Slow speed
    (B) High speed
    (C) Any speed
    (D) Certain specific speed
4. The effect of setting a boring tool above center height leads to
    (A) Increase in the effective rake angle and a decrease in the effective clearance angle
    (B) Increase in both effective rake angle and effective clearance angle
    (C) Decrease in the effective rake angle and an increase in the effective clearance angle
    (D) Decrease in both effective rake angle and effective clearance angle
5. The machining of titanium is difficult due to
    (A) High thermal conductivity of titanium
    (B) Chemical reaction between tool and work
    (C) Low tool-chip contact area
    (D) None of these
6. If the diameter of the hole is subject to considerable variation, then for locating in jigs and fixtures, the pressure type of locator used is
    (A) Conical locator
    (B) Cylindrical locator
    (C) Diamond pin locator
    (D) Vee locator
7. The factor which affects the tool life is
    (A) Tool geometry
    (B) Cutting speed
    (C) Feed rate
    (D) All of these
8. The size of a lathe is specified by the
    (A) Length between centers
    (B) Swing diameter over the bed
    (C) Swing diameter over the carriage
    (D) All of these
9. For machining a cast iron workpiece by a high speed steel tool, the average cutting speed is
    (A) 10 m/min
    (B) 15 m/min
    (C) 22 m/min
    (D) 30 m/min
10. In transverse grinding
    (A) The work is reciprocated as the wheel feeds to produce cylinders longer than the width of wheel face
    (B) The work rotates in a fixed position as the wheel feeds to produce cylinders equal to or shorter than the width of wheel face
    (C) The work is reciprocated as the wheel feeds to produce cylinders shorter than the width of wheel face
    (D) The work rotates in a fixed position as the wheel feeds to produce cylinders longer than the width of wheel face
11. Which of the following statement is wrong?
    (A) The larger side rake angle produces chipping
    (B) The smaller rake angle produces excessive wear and deformation in tool
    (C) The side cutting edge angle (less than 15°) increases tool life
    (D) The increase in nose radius decreases tool life
12. Glazing in grinding wheels can be decreased by
    (A) Using a harder wheel or by increasing the wheel speed
    (B) Using a softer wheel or by decreasing the wheel speed
    (C) Using a harder wheel or by decreasing the wheel speed
    (D) Using a softer wheel or by increasing the wheel speed
13. A single point thread cutting tool should ideally have
    (A) Zero rake angle
    (B) Positive rake angle
    (C) Negative rake angle
    (D) Point angle
14. In which of the following machine, the work rotates and the tool is stationary?
    (A) Vertical boring machine
    (B) Horizontal boring machine
    (C) Precision boring machine
    (D) Jig boring machine
15. In drilling aluminium, a drill with
    (A) Zero helix angle is used
    (B) Low helix angle is used
    (C) High helix angle is used
    (D) Any helix angle can be used
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