Manufacturing Processes (3141908) MCQs

MCQs of Basic Machine Tools and Metal Cutting Principles

Showing 71 to 80 out of 100 Questions
5 6 7 8 9 10
71.
The cutting fluid mostly used for machining steel is
(a) water
(b) soluble oil
(c) dry
(d) heavy oils
Answer:

Option (b)

72.
The part of the tool on which cutting edge is formed is called the nose.
(a) correct
(b) incorrect
Answer:

Option (b)

73.
In a single point turning operation with a cemented carbide and steel combination having a Taylor exponent of 0.25 if the cutting speed is halved, then tool life will become
(a) half
(b) two times
(c) eight times
(d) sixteen times
Answer:

Option (d)

74.
The tool material, for faster machining, should have
(a) wear resistance
(b) red hardness
(c) toughness
(d) all of these
Answer:

Option (d)

75.
Which of the following statement is correct for the orthogonal cutting system?
(a) A. The cutting edge of the tool is perpendicular to the direction of tool travel.
(b) B. The cutting edge clears the width of the workpiece on either end.
(c) C. The chip flows over the tool face and the direction of the chip flow velocity is normal to the cutting edge.
(d) D. all of the above
Answer:

Option (d)

76.
Larger than 15° side cutting edge angle
(a) increases tool life
(b) decreases tool life
(c) produces chipping and decreases tool life
(d) results in excessive stress concentration and greater heat generation
Answer:

Option (c)

77.
The angle on which the strength of the tool depends is
(a) rake angle
(b) cutting angle
(c) clearance angle
(d) lip angle
Answer:

Option (a)

78.
n metal cutting, use of low feeds and high cutting speeds is desired when the objective is
(a) the high metal removal rate
(b) dry machining
(c) use of the soft cutting tool
(d) surface finish
Answer:

Option (d)

79.
An important geometrical quantity in the cutting of metals which can be used as a criterion for machinability of metals is
(a) cutting speed
(b) feed rate
(c) shear angle
(d) tool geometry
Answer:

Option (c)

80.
The factor responsible for the formation of continuous chips with built-up edge is
(a) low cutting speed and large rake angle
(b) low cutting speed and small rake angle
(c) high cutting speed and large rake angle
(d) high cutting speed and small rake angle
Answer:

Option (b)

Showing 71 to 80 out of 100 Questions
5 6 7 8 9 10