Kerala Public Service Commission Overseer/ Draftsman Mechanical Irrigation Department Paper 2016
Which of the following compass is used to draw very large circle ?
(a) Large compass
(b) Beam Compass
(c) Drop Compass
(d) Bow compass
The trimmed size of A3 drawing sheet is
(a) 297 x 420 mm
(b) 210 x 297 mm
(c) 148 x 210 mm
(d) 420 x 594 mm
An angle which is less than 90 degree is called
(a) Obtuse angle
(b) Acute angle
(c) Reflex angle
(d) Straight
A triangle has two of its sides equal
(a) Scalene triangle
(b) Equilateral triangle
(c) Isosceles triangle
(d) Right angled triangle
It an object lies in third quadrant, its position with respect to reference plane will be
(a) In front of VP above HP
(b) In front of VP below HP
(c) Behind VP above HP
(d) Behind VP below HP
When the objects is cut by a section, plane parallel to HP and perpendicular to VP. Then the section view of the object is obtained in
(a) Right side view
(b) Left side view
(c) Plan
(d) Elevation
Which type of drawing shows the front of the object in true position ?
(a) Oblique projection
(b) Perspective projection
(c) Isometric projection
(d) None of these
The distance a screw thread advances axially for one complete revolution is called
(a) Pitch
(b) Root
(c) Module
(d) Lead
Which one of the following threads, is used on mechanical screw jack ?
(a) “V” threads
(b) Acme threads
(c) Square threads
(d) Buttress threads
‘Rag bolt’ is a type of
(a) Welding bolt
(b) Foundation bolt
(c) Heavy duty bolt
(d) Locking bolt
The semicircular key is used for transmitting light torque
(a) Feather key
(b) Gib head key
(c) Saddle key
(d) Woodruff key
The proportion of a nut thickness with respect to bolt diameter (D) is
(a) 0.5 D
(b) 0.8 D
(c) D
(d) 1.73 D
The rivet usually used for boiler plate riveting
(a) Pan head
(b) Snap head
(c) Conical head
(d) Countersunk head
The vice used for forging work is
(a) Forging vice
(b) Leg vice
(c) Toolmaker’s vice
(d) Bench vice
The box nut of a bench vice is made of
(a) Phosphorus bronze
(b) Aluminium
(c) Alloy steel
(d) Lead
Rasp cut file is used for filing
(a) Mild steel
(b) Cast iron
(c) Nickel Steel
(d) Wood
The mallet is made of
(a) Mild steel
(b) Cast iron
(c) Nickel steel
(d) Wood
Which of the following chisel is used for cutting keyways ?
(a) Crosscut chisel
(b) Diamond point chisel
(c) Flat chisel
(d) Round nose chisel
The least count of metric Vernier height gauge is
(a) 0.01 mm
(b) 0.02 mm
(c) 0.1 mm
(d) 0.5 mm
The lathe bed is made of
(a) Mild Steel
(b) High Carbon Steel
(c) Cast Iron
(d) Alloy Steel
The size of the sine bar is specified by
(a) overall length
(b) Length and weight
(c) Distance between rollers
(d) Roller’s diameter
The least count of Vernier bevel protractor is
(a) 1 minutes
(b) 5 minutes
(c) 12 minutes
(d) 30 minutes
In a shaper
(a) Work reciprocates and tool stationary
(b) Work reciprocates and tool moves over them
(c) Work stationary and tool reciprocates
(d) Work stationary and tool moves over them
Clapper box is used in
(a) Shaper
(b) Radial drilling machine
(c) Centre less grinding machine
(d) Slotter
The irregular shaped work pieces are clamped on a lathe by using
(a) Face plate
(b) Four jaw chuck
(c) Mandrill
(d) Lathe dog
The file grades are determined by the
(a) Distance from tip to heel
(b) Spacing of the teeth
(c) Cut of file
(d) Shape of file
Name the operation of cutting a sheet of metal in a straight line along the length
(a) Lancing
(b) Embossing
(c) Slitting
(d) Perforating
The cutting tool in a milling machine is mounted on
(a) Chuck
(b) Arbor
(c) Spindle
(d) Tool post
The operation of cutting a piece out of stock material to a predetermined contour termed as
(a) Drawing
(b) Piercing
(c) Punching
(d) Blanking
Which among the following stake provides double ended support ?
(a) Horse stake
(b) Funnel stake
(c) Creasing stake
(d) Half moon stake
The point angle of a centre punch is
(a) 30 degree
(b) 60 degree
(c) 45 degree
(d) 90 degree
Bend snips are used for
(a) Support round articles
(b) Making round holes
(c) Cutting metal sheet along a curved lines
(d) None
In acetylene cylinder, the acetylene is dissolved in
(a) Carbon dioxide
(b) Water
(c) Oxygen
(d) Acetone
In Foundry, which sand is used for making cores
(a) Oil sand
(b) Green sand
(c) Loam sand
(d) Parting sand
Which tool is used for repairing and finishing the mould surface after the pattern is withdrawn ?
(a) Lifter
(b) Slick
(c) Swab
(d) Riddle
Which taper is provided in the hollow end of tail stock bores in a centre lathe?
(a) Morse taper
(b) Jerno taper
(c) Brown and sharp taper
(d) Metric taper
The unit of electric conductance is
(a) Farad
(b) Henry
(c) Coulomb
(d) Siemens
Which of the following generator have two field winding ?
(a) Shunt wound generator
(b) Series wound generator
(c) Compound wound generator
(d) Parallel wound generator
The air-fuel ratio of the petrol engine is controlled by
(a) Injector
(b) Governor
(c) Carburetor
(d) Fuel pump
Which of the following devices used to control the speed variation of the engine caused by the fluctuation of the engine turning moment ?
(a) Crank shaft
(b) Cam shaft
(c) Governor
(d) Fly whell
The loud pulsating noise heard within the cylinder of an IC engine is knwon as
(a) Scavenging
(b) Detonation
(c) Injecting
(d) Super charging
The ratio of break power to the indicated power of an IC engine
(a) Indicated thermal efficiency
(b) Relative efficiency
(c) Break thermal efficiency
(d) Mechanical efficiency
An intentional difference between the hole dimensions and shaft dimentions for any type of fit is called
(a) Allowance
(b) Tolerance
(c) Deviation
(d) Fit
The irregularities in the surface texture due to the inherent action of the production process is called
(a) Waviness
(b) Lay
(c) Roughness
(d) Flaws
Which of the following coupling can used for connecting two shafts, whose axis are parallel but not in same alignment ?
(a) Oldham coupling
(b) Muff coupling
(c) Flange coupling
(d) Sleeve coupling
For designing a sleeve coupling, if ‘d’ is the diameter of the shaft in mm, then diameter of the sleeve is taken as
(a) d + 17 mm
(b) 2d + 13 mm
(c) 2d + 20 mm
(d) 3.5 d mm
The portion of the shaft carried in the plane bearing is often referred as
(a) Hub
(b) Races
(c) Case
(d) Journal
The antifriction bearing’s rolling elements are usually made of
(a) Chrome steel
(b) High speed steel
(c) HIgh carbon steel
(d) Silicon steel
RAM of a computer means
(a) Random Access Memory
(b) Real Access Memory
(c) Rapid action Memory
(d) Rapid Access Memory
Expand UCS
(a) Universal Curser Sign
(b) Universal Co-ordinate System
(c) Universal card Setting
(d) Universal Card Site
Polar co-ordinate system is mostly used in AutoCAD for drawing
(a) Circle
(b) Ellipse
(c) Arc
(d) Angular lines
In AutoCAD, which of the following space the free orbit tool can found ?
(a) Modify
(b) 3D move
(c) Rotate
(d) Revolve
PAN command is used to move the drawing over the computer screen in CAD drawing
(a) Horizontally
(b) Vertially
(c) In any directions
(d) In ‘Z’ directions
In, AutoCAD, the function key for ortho ON/OFF is
(a) F6
(b) F7
(c) F8
(D) F9
‘Zoom out’ during CAD drawing
(a) Roll the wheel forward
(b) Roll the wheel backward
(c) Double click the wheel button
(d) Hold down the wheel button
If your erase a geometry accidently, which command used to retrieve the geometry in AutoCAD
(a) OOPS
(b) TRIM
(c) ERASE
(d) None of these
Which command can used in AutoCAD to duplicate existiing objects in a circular pattern ?
(a) COPY
(b) ARRAY
(c) MOVE
(d) MIRROR
In AutoCAD, which command will give solid objects ?
(a) REVOLVE
(b) ROTATE
(c) EXTRUDE
(d) EXPLOD
Solder is an alloy of
(a) Copper and Tin
(b) Lead and Zinc
(c) Lead and Tin
(d) Copper and Lead
The fast pulley is a pulley which has
(a) Runs fast
(b) Runs independently
(c) A grooved pully
(d) Fitted on the shaft
The actual difference caused betwen the surface speed of the belt and pulley is
(a) Creep
(b) Slip
(c) Dressing
(d) None of these
Which of the following gear, the teeth are cut an angle to the axis of rotation ?
(a) Spur gear
(b) Helical gear
(c) Hypoid gear
(d) Bevel gear
The jockey pulley or idler pulley is fitted
(a) Near the driver pulley on the tension side of the belt
(b) Near the driven pulley on the tension side of the belt
(c) Near the driver pulley on the slack side of the belt
(d) Near the driven pulley on the slack side of the belt
The ratioof the pitch diameter to the number of teeth of the gear is
(a) Pitch
(b) Pitch circle
(c) Root depth
(d) Module
The size of the gear is usually specified by
(a) Dimetrical pitch
(b) Pitch circle diameter
(c) Addendum circle
(d) Deddundum circle
Dwell period of a cam is the period in which the follower
(a) Moves fast
(b) Moes slow
(c) Does not mvoe
(d) None of these
Which form of energy is tored in hydraulic accumulator ?
(a) Pressure energy
(b) Kinetic energy
(c) Potential energy
(D) Heat energy
Which of the following pump is suitable for high head and less discharge ?
(a) Centrifugal pump
(b) Reciprocating pump
(c) Came and piston pump
(d) Plunger pump
Which of the following jig consist of a drill plate, which rests on the component to be drilled?
(a) Solid jig
(b) Truning jig
(c) Box Jig
(d) plate jig
Which of the following clamp works on the principle of inclined planes ?
(a) Cam clamp
(b) Toggle clamp
(c) Wedge clamp
(d) Ltch clamp
Which of the foolowing gauge is used to check the gap between mating parts ?
(a) Snap gauge
(b) Plug gauge
(c) Feeler gauge
(d) Caliper gauge
In pneumatic system, a sensor serves the purpose of
(a) Feedback
(b) Transmission
(c) Control
(d) None of these
The washer is specified by its
(a) Thickness
(b) Mean diameter
(c) Outer diameter
(d) Inner diameter
The ratio of the ultimate stress to the working stress is
(a) Poission’s ratio
(b) Factor of safety
(c) Young’s Modulus
(d) Modulus of rigidity
In which type of drawing, vertical pipes may be revolved into the horizontal plane ?
(a) Plane view
(b) Transverse view
(c) Developed view
(d) Front view
The command for to set a new layer in Auto CAD is
(a) DDLPTTPE
(b) DDLPROP
(c) DDLIAYR
(d) DDLMODES
The profile of a gear tooth is in the form of
(a) Involutes
(b) Helix
(c) Parabola
(d) Hyperbola
The threads provided on standard pipe fittings are
(a) BA
(b) BSW
(c) BSF
(d) BSP
The act of joining together slip gauge is termed as
(a) Bunching
(b) Wringing
(c) Extending
(d) Welding
Circlips are made of
(a) Cast iron
(b) Stainless steel
(c) Shivaji Lotan Patil
(d) Hansal Mehta
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