MACHINIST THEORY SEM I JAN13 QUESTIONS
Which one is not the cause of accident?
A Unaware of danger B Negligence C Regard for safety D Improper use of tools
For cutting conduit pipe, the most suitable pitch of the hacksaw blade is............
A 1.8mm B 1.4 mm C 1 mm D 0.8 mm
Which one of the following will be suitable tap drill size for M6 tap for 100% thread?
A 4.8 mm B 5.0 mm C 5.2 mm D 5.4 mm
Name the tool used in forging work to enlarge a previously punched hole
A Punch B Drift C Fork D Anvil
Which processes is used to reduce the brittleness and to increase the toughness of hardened tools?
A Hardening B Tempering C Annealing D Normalising
The smallest division graduated on barrel of outside micrometer is ...
A 0.01 mm B 0.05 mm C 0.2 mm D 0.5 mm
What is the part used to change the range depth micrometer?
A Graduated sleeve B Extension rod C Stock D Thimble
The inside sharp corner of a job should by using.....
A round nose tool B key way tool C square nose tool D cornering tool
The size of a slotter is specified by its maximum
A longitudinal travel of table B height between table and ram
C crosswise travel of table D length of stroke of ram
To slot a convex surface, the cutting tool required is ........................
A square nose tool B round nose tool C keyway tool D cornering tool
The solid forged slotting tool is made out
A tungsten carbide B high speed steel C mild steel D hard cast iron
The chisel will dig into the material when
A the rake angle is more B the clearance angle is too low
C the angle of inclination is more D the angle of inclination is too low
In heat treatment process normalising................
A improve the mahinability B refine grain structure
C increase the hardness D increase the brittleness
In the outside micrometer, the graduation and datum line are marked on ...
A frame B thimble C spindle D barrel
Which one of the following is the characteristic of a standard shaping machine relating to cutting process?
A The tool cuts during forward motion. B The tool cuts on both directions.
C The tool cuts in reverse directions. D The tool cut when the ram is not moving.
The influence on the same number of strokes or range of strokes on machine cutting speed is ...
A longer stroke causes less cutting speed
B no influence of the range of stroke on the
cutting speed
C longer stroke causes higher cutting speed
D smaller stroke causes higher cutting speed.
The range of oscillation of the rocker arm shaper is controlled by this component...
A Bull gear B Compensating link C Slotted link D Sliding block
The cutting speed of the tool in mechanical shaper is...............................
A maximum at the beginning of the cutting stroke
B maximum at the end of the cutting stroke
C maximum at the middle of the cutting stroke
D minimum at the through out the cutting stroke
The convex surface can be slotted by using ..............
A longitudinal feed B rotary feed C cross feed D vertical feed
What should be the position of the job for slotting circular surface on slotting machine ?
A At one side of the table. B Introduction centre and edge.
C At the centre of the table D Anywhere on the table.
An angular surface has to be machined in shaping machine. For machining this the tool is adjusted by...
A swivelling and fixing tool at an angle. B swivelling the clapper box.
C swivelling the tool head of the machine. D tilting tabie itself..
The error caused due to viewing from side direction while measuring dimenion is ...
A static deformation error B micro-geometrical error C parallax error D contact error
The crank pin of a shaping machine is set closer to the centre of the bull gear How does it affect the ram movement?
A The ram does not move.
B It does not affect the ram movement.
C The ram movement will be longer.
D The ram movement will be shorter
In a slotting operation the length of the stroke is 50mm, number of double storkes per minute
is 50 the ratio of return of cutting stroke is 2:3 Calculate the cutting speed in m/min?
A 9.16 B 8.16 C 4.16 D 3.16
The bench vice are specified by ...
A the length of spindle B the width of jaw
C the length of fixed jaw D the moving distance of movable jaw
A nut, which can be tighten/loosen by thumb pressure and used in hack saw frame is called a ..................
A ring nut B thumbnut C cap nut D wing nut
Name the part which is connecting slotted link to the ram
A Die block B Bull gear C Connecting link D Crank pin
The process of heating the high carbon steel above upper critical temperature followed by a slow cooling is termed as ....
A normalizing B annealing C hardening D tempering
Which one of the following operations done on-lotting machine?
A External keyway on long shaft
B Internal grooves
C Woodruff keyway on a shaft
Which one is not the cause of accident?
A Unaware of danger B Negligence C Regard for safety D Improper use of tools
For cutting conduit pipe, the most suitable pitch of the hacksaw blade is............
A 1.8mm B 1.4 mm C 1 mm D 0.8 mm
Which one of the following will be suitable tap drill size for M6 tap for 100% thread?
A 4.8 mm B 5.0 mm C 5.2 mm D 5.4 mm
Name the tool used in forging work to enlarge a previously punched hole
A Punch B Drift C Fork D Anvil
Which processes is used to reduce the brittleness and to increase the toughness of hardened tools?
A Hardening B Tempering C Annealing D Normalising
The smallest division graduated on barrel of outside micrometer is ...
A 0.01 mm B 0.05 mm C 0.2 mm D 0.5 mm
What is the part used to change the range depth micrometer?
A Graduated sleeve B Extension rod C Stock D Thimble
The inside sharp corner of a job should by using.....
A round nose tool B key way tool C square nose tool D cornering tool
The size of a slotter is specified by its maximum
A longitudinal travel of table B height between table and ram
C crosswise travel of table D length of stroke of ram
To slot a convex surface, the cutting tool required is ........................
A square nose tool B round nose tool C keyway tool D cornering tool
The solid forged slotting tool is made out
A tungsten carbide B high speed steel C mild steel D hard cast iron
The chisel will dig into the material when
A the rake angle is more B the clearance angle is too low
C the angle of inclination is more D the angle of inclination is too low
In heat treatment process normalising................
A improve the mahinability B refine grain structure
C increase the hardness D increase the brittleness
In the outside micrometer, the graduation and datum line are marked on ...
A frame B thimble C spindle D barrel
Which one of the following is the characteristic of a standard shaping machine relating to cutting process?
A The tool cuts during forward motion. B The tool cuts on both directions.
C The tool cuts in reverse directions. D The tool cut when the ram is not moving.
The influence on the same number of strokes or range of strokes on machine cutting speed is ...
A longer stroke causes less cutting speed
B no influence of the range of stroke on the
cutting speed
C longer stroke causes higher cutting speed
D smaller stroke causes higher cutting speed.
The range of oscillation of the rocker arm shaper is controlled by this component...
A Bull gear B Compensating link C Slotted link D Sliding block
The cutting speed of the tool in mechanical shaper is...............................
A maximum at the beginning of the cutting stroke
B maximum at the end of the cutting stroke
C maximum at the middle of the cutting stroke
D minimum at the through out the cutting stroke
The convex surface can be slotted by using ..............
A longitudinal feed B rotary feed C cross feed D vertical feed
What should be the position of the job for slotting circular surface on slotting machine ?
A At one side of the table. B Introduction centre and edge.
C At the centre of the table D Anywhere on the table.
An angular surface has to be machined in shaping machine. For machining this the tool is adjusted by...
A swivelling and fixing tool at an angle. B swivelling the clapper box.
C swivelling the tool head of the machine. D tilting tabie itself..
The error caused due to viewing from side direction while measuring dimenion is ...
A static deformation error B micro-geometrical error C parallax error D contact error
The crank pin of a shaping machine is set closer to the centre of the bull gear How does it affect the ram movement?
A The ram does not move.
B It does not affect the ram movement.
C The ram movement will be longer.
D The ram movement will be shorter
In a slotting operation the length of the stroke is 50mm, number of double storkes per minute
is 50 the ratio of return of cutting stroke is 2:3 Calculate the cutting speed in m/min?
A 9.16 B 8.16 C 4.16 D 3.16
The bench vice are specified by ...
A the length of spindle B the width of jaw
C the length of fixed jaw D the moving distance of movable jaw
A nut, which can be tighten/loosen by thumb pressure and used in hack saw frame is called a ..................
A ring nut B thumbnut C cap nut D wing nut
Name the part which is connecting slotted link to the ram
A Die block B Bull gear C Connecting link D Crank pin
The process of heating the high carbon steel above upper critical temperature followed by a slow cooling is termed as ....
A normalizing B annealing C hardening D tempering
Which one of the following operations done on-lotting machine?
A External keyway on long shaft
B Internal grooves
C Woodruff keyway on a shaft
D Keyway for feather keys.
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