- The helical groove in drill is used
- The quickest type of chuck for centring operation 1s
- Metal in electro-chemical grinding operation is removed by
- The metal in electro-chemical machining process 1s removed by
- In electro-discharge machining process
- A complicated contour is to be made exactly in a carbide pieceWhich process will be used?
- The instruction on the tape of NC machine is prepared in the form of following system
- NC machine tool is operated by
- Acombination of individual machine tools arranged sequentially and properly integrated and inter-locked is known as
- Dielectric is a must in
- In EDM process, the work-piece is connected to
- Reproduction of sharp corners is the limitation of
- Broaching operation is frequently used in automobile industry because
- Very large speed ranges are required for
- For same tool life, maximum material per minute is removed by increasing
- The phenomenon of stick-slip is more predominant when the sliding speed is
- The trade name given to a non-ferrous cast alloy composed of cobalt, chromium and tungsten is
- An important disadvantage of broaching process 1s
- Broaching tools are usually made of
- The front teeth of a broach
- For proper broaching operation at least following number of teeth should be in the work at a time
- 9A gear has to be subjected to shock and vibrationFollowing type should be selected
- Thin gears from sheet metal can be produced commercially by
- Which of the following is gear finishing process 2
- Which of the following is not a production process for gears?
- Hobbing process is not suitable for cutting following type of gear
- Formed milling operation of cutting gears can be used for cutting following type of gears
- Gear forming operation can be performed by
- Gear hobbing process 1s faster than millineilling because
- Gear cutting with a hob does not involve the following motions
(a) to dispose chip
(b) to admit cutting fluid
(c) to save material
(d) to present sharp cutting edges
(e) none of the above.
none of the above.
(a) three jaw
(b) four jaw
(c) pneumatic
(d) magnetic
(e) none of the above.
four jaw
(a) abrasion and shear
(b) electro-chemical decomposition
(c) rusting and melting
(d) electro-chemical decomposition and abrasion
(e) ionisation and abrasion.
rusting and melting
(a) ionisation and shearing
(b) transfer of electrons
(c) chemical action and abrasion
(d) migration of ions towards the tool
(e) electric discharge in strong solutions.
electric discharge in strong solutions.
(a) very high voltage of the order of kilovolts is applied across electrodes
(b) current of the order 10,000 amps is passed through the work
(c) continuous sparks to erode the metal are produced
(d) upto around 250,000 sparks per second are produced
(e) metal is removed at very fast rate.
metal is removed at very fast rate.
(a) laser machining
(b) electro-chemical milling
(c) ultrasonic machining
(d) electro-discharge machining
(e) plasma-arc machining.
ultrasonic machining
(a) alpha-numeric
(b) numeric
(c) binary numbers
(d) binary coded decimal
(e) coded form
binary numbers
(a) feedback system
(b) output-input modules
(c) a series of coded instructions
(d) digitising
(e) numerical controls.
a series of coded instructions
(a) production line
(b) numerically controlled machine
(c) machining centre
(d) transfer machine
(e) automat.
production line
(a) EDM process
(b) ECM process
(c) ultrasonic machining
(d) ion beam machining
(e) laser machining.
ion beam machining
(a) negative
(b) positive
(c) any one of the above
(d) earth
(e) none of the above.
positive
(a) EDM
(b) ECM
(c) plasma
(d) laser
(e) none of the above.
EDM
(a) it is an automatic machine
(b) it is a mass production machine
(c) semi-skilled operators can be employed
(d) operation is completed in one stroke
(e) high degree of finish and close tolerances are achieved.
operation is completed in one stroke
(a) planning machines
(b) shaping machines
(c) semi-automatic and automatic turrets
(d) drilling machines.
(e) grinding machines
semi-automatic and automatic turrets
(a) feed
(b) cutting speed
(c) tool hardness
(d) depth of cut
(e) clearance angle.
depth of cut
(a) low
(b) zero
(c) high
(d) equal to the cutting speed
(e) at all the speeds.
low
(a) HSS
(b) satellite
(c) ceramic
(d) boron carbide
(e) alnico.
ceramic
(a) the broaching tools are always longer in length
(b) only simple shapes can be obtained
(c) the return stroke is always idle
(d) the process is suitable only for high volume production
(e) all of the above.
the return stroke is always idle
(a) high carbon steel
(b) high speed steel (H.S.S.)
(c) ceramics
(d) tungsten carbide
(e) stellite.
high carbon steel
(a) remove no metal
(b) remove maximum metal
(c) remove minimum metal
(d) perform the burnishing operation
(e) guide the broach.
remove maximum metal
(a) 1
(b) 2
(c) 3
(d) 4
(e) more than four.
4
(a) gear with full depth teeth
(b) hybrid gears
(c) bevel gears
(d) gear with stub teeth
(e) hardened gears.
hybrid gears
(a) gear hobbing
(b) gear shaping
(c) extruding
(d) machining
(e) stamping.
machining
(a) gear shaving
(b) gear hobbing
(c) gear shaping
(d) gear milling
(e) gear extrusion.
gear milling
(a) miling
(b) stamping
(c) hot rolling
(d) extruding
(e) broaching.
hot rolling
(a) spurr
(b) helical
(c) worm
(d) bevel1
(e) all of the above.
spurr
(a) spur
(b) bevel1
(c) wormn
(d) helical
(e) all of the above.
spur
(a) milling
(b) any one ot the abov
(c) shaping
(d) broaching
(e) none of the above.
milling
(a) indexing time is less
(b) hob rotates faster
(c) work rotates faster
(d) plenty of lubricant is supplied in supplied in hobbinenabling faster operation
(e) several teeth cut at a time.
hob rotates faster
(a) indexing of the work
(b) rotation of hoh
(c) radial feed of hob
(d) rotation of blank
(e) all of the above
indexing of the work
Cover Topic
“jet tools outlet”,”jet bandsaw”
