Total load is distributed over all teeth when thread cutting is done using thread chaser.
a) True
b) False
Q.3.
Which of the following is the correct reason for keeping transverse force minimum in turning of slender rod?
a) To enhances surface finish
b) To increase productivity
c) To increase efficiency of cutting
d) To reduce undesired vibration during turning
Q.4.
Self centered chuck has ___ number of jaws.
a) 10
b) 1
c) 2
d) 3
Q.5.
During groove cutting in a lathe, by using a parting tool, which of the following forces are encountered?
a) Tangential
b) Radial
c) Tangential, Radial and Axial
d) Tangential and Radial
Q.6.
Which of the following will give the best result for taper turning on the internal surface?
a) Using tailstock offset method
b) Using taper attachment method
c) Using form tool
d) Using compound rest method
Q.7.
Lead screw of lathe have double start thread with a pitch of 4mm. What should be the ratio of speed between lead screw and spindle for producing a single start thread of 2 mm pitch?
a) 1:2
b) 1:3
c) 1:4
d) 1:5
Q.8.
Let screw of 2mm pitch is needed to be cut on lathe machine. Lead screw of lathe has pitch of 6mm. Which of the following statement is correct?
a) Speed of lead screw> speed of spindle
b) Speed of lead screw< speed of spindle
c) Speed of lead screw=speed of spindle
d) None of the mentioned
Q.9.
Speed of lead screw decreases in relative to speed of spindle as many times the required pitch is larger than pitch of lead screw.
a) True
b) False
Q.10.
Speed of lead screw decreases in relative to speed of spindle as many times the required pitch is smaller than pitch of lead screw.
a) True
b) False
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