MCQs on Lathe-2
1 - Question
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
View Answer
Explanation: Vibration is the major problem during turning of slandered rod due to which it is advised to keep transverse force minimum during turning of slender rod.
2 - Question
Self centered chuck has ___ number of jaws.
a) 10
b) 1
c) 2
d) 3
View Answer
Explanation: 3-jaw chucks are also known as self centered chuck, hence they have 3 jaws.
3 - Question
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
View Answer
Explanation: Radial, axial and tangential forces are encountered during groove cutting on a lathe machine. advertisement
4 - Question
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
View Answer
Explanation: Compound rest method is generally used for taper turning on internal surfaces.
5 - Question
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
View Answer
Explanation: Number of starts and pitch of lathe is directly proportional to speed of spindle required.
6 - Question
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
View Answer
Explanation: Speed of lead screw decreases in relative to speed of spindle as many times the required pitch is larger than pitch of lead screw.
7 - Question
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
View Answer
Explanation: Lead screw will move axially equal to pitch of lead screw after one complete rotation of lead screw.
8 - Question
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
View Answer
Explanation: Lead screw will move axially equal to pitch of lead screw after one complete rotation of lead screw.
9 - Question
What are thread chasers?
a) Multipoint cutting tool
b) Single point cutting tool
c) A work holding device
d) None of the mentioned
View Answer
Explanation: Thread chasers are multipoint cutting tool used for cutting threads.
10 - Question
Total load is distributed over all teeth when thread cutting is done using thread chaser.
a) True
b) False
View Answer
Explanation: Distribution of load over all teeth is the main advantage of using thread chaser for thread cutting operation.