1. Which of the following position of tumbler gear lever set will move carriage towards headstock of the lathe?
a) Up
b) Middle
c) Down
d) None of the mentioned
Explanation: Tumbler gear lever in up position moves the carriage towards the headstock in a lathe machine
2. Which of the following can be used to reverse the direction of lead screw relative to the direction of spindle movement?
a) Speed lever
b) Feed Lever
c) Tumbler gear lever
d) Friction clutch
Explanation: Tumbler gear lever is used to reverse the direction of lead screw relative to the direction of spindle movement in lathe machine.
3. Which of the following arrangement is used in the movement of carriage along the ways?
a) Rack and pinion
b) Spindle mechanism
c) Crank and slotted lever mechanism
d) None of the mentioned
Explanation: Rack and pinion mechanism is used in movement of carriage by flywheel. Rack is gear of finite diameter.
4. Which of the following have a live centre?
a) Tail stock
b) Headstock
c) Tool post
d) None of the mentioned
Explanation: Head stock has live centre and it is called live because spindle rotates here and is not at rest during machining.
5. Which of the following is also known as Puppet head?
a) Headstock
b) Tailstock
c) Tool Post
d) None of the mentioned
Explanation: Tailstock is also known as puppet head. It is at the back part of lathe machine.
6. Which of the following part of lathe slides along bed ways?
a) Cross slide
b) Saddle
c) Compound rest
d) None of the mentioned
Explanation: Saddle slides along bed ways in lathe machine during the process of machining.
7. Which of the following part of lathe move in a direction normal to the axis of spindle?
a) Cross slide
b) Saddle
c) Compound rest
d) None of the mentioned
Explanation: Cross slide move in a direction normal to the axis of spindle during the process of machining in lathe machine
8. Which of the following is used to give power feed during cutting of threads?
a) Rack and pinion
b) Planer mechanism
c) Quick return mechanism
d) Using spilt nut
Explanation: Split nut are used to engage lead screw to give power feed in lathe during the process of machining in lathe machine.
9. Which of the following serves as a housing for driving pulley, and back gears?
a) Headstock
b) Tailstock
c) Tool Post
d) None of the mentioned
Explanation: Headstock has driving pulleys and back gears in lathe machine. Headstock also carries spindle and chuck for holding the work piece.
10. The tail stock set over required to turn a taper on the entire length of a workpiece having diameters D and d is
a) D – d/2L
b) D – d/L
c) D – d/2
d) D – d
Explanation: D – d/L