61.
Which of the following options best describes the centre lathes?
A
Machining machines
B
Shaping machines
C
Turning machines
D
None of the above
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Which of the following options best describes the centre lathes?
Machining machines
Shaping machines
Turning machines
None of the above
A desired speed of _____ can be obtained by selecting the suitable change gears having proper number of teeth.
Lead screw
Countershaft
Spindle
Feed gear box
When the tool of centre lathe moves perpendicular to the axis of rotation,
it produces a cylindrical surface
it produces a flat surface
it produces a tapered surface
none of the above
Lathe spindle has got.......
Internal threads
External threads
Taper threads
No threads
In Lathe, the back gears are used for affecting _______ in spindle speeds, thereby facilitating wider range of speeds
Increase
Reduction
Increase or reduction
None of the above
The centre lathes receive their power through
headstock
tailstock
both a. and b.
none of the above
Steady Rest is also called
Head stroke
Centre Rest
Chuck
Tool Post
The following part of Lathe serves as housing for the driving pulleys and back gears
Head stock
Tail stock
Bed
Carriage
The Lathe carriage serves the following purpose of the tool
Guiding
Feeding
Supporting
All of the above
Internal or external tapers on a turret lathe can be turned by......
Face turning attacment
Taper turning attacment
Sliding attacment
Morse taper attacment
The following is used in Magnetic chucks
Electromagnet
Permanent magnet
Both A and B
None of the above
In lathe work, when the tool is fed parallel to the rotation of job work, it will produce
Cylindrical surface
Spherical surface
Tapered surface
All of the above
Lathe center is used for
Cutting
Supporting
All of these
Holding
The following acts as driving shaft in Lathe.
Countershaft
Spindle shaft
Lead screw
None of the above
Which type of process the machining can be?
Cold working
Hot working
Both a. and b.
None of the above
Work-piece is hold in
Chuck
Tail Stock
Carriage
Head Stock
Lathe Dogs are ................ Devices
Cast Metal
Gold
Silver
Alloy
The foundation of the centre lathe is called as
carriage
tray
base
bed
Tool post is ................. the Carriage
Above
Below
Right side
Left side
While cold forging is done at room temperatures, hot forging occurs at:
100 to 500 degrees
500 to 1000 degrees
1000 to 2000 degrees
200 to 3000 degrees