Workshop Technology 1000 Questions and Answers Pdf

1. The brass and bronze are welded by _________ flame.

A. Neutral

B. Oxidizing

C. Carburising

D. All of these

Answer: Option B

Solution:

A slightly oxidizing flame is used in torch brazing of steel and cast iron. A stronger oxidizing flame is used in the welding of brass or bronze.

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2. A gimlet is a ________ tool.

A. Boring

B. Marking

C. Cutting

D. None of these

Answer: Option A

Solution:

Gimlet is a small tool for boring holes, consisting of a shaft with a pointed screw at one end and a handle perpendicular to the shaft at the other

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3. In TIG arc welding, the welding zone is shielded by an atmosphere of

A. Helium gas

B. Argon gas

C. Either (A) or (B)

D. None of these

Answer: Option C

Solution:

In TIG arc welding, The weld area and electrode is protected from oxidation or other atmospheric contamination by an inert shielding gas argon or helium

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4. In sheet metal blanking, shear is provided on punches and dies so that

A. Press load is reduced

B. Good cut edge is obtained

C. Warping of sheet is minimized

D. Cut blanks is straight

Answer: Option A

Solution:

In sheet metal blanking, shear is provided on punches and dies so that Press load is reduced

5. For obtaining a cup of diameter 25 mm and height 15 mm by drawing, the size of the round blank should be approximately

A. 42 mm

B. 44 mm

C. 46 mm

D. 48 mm

Answer: Option C

Solution:

For obtaining a cup of diameter 25 mm and height 15 mm by drawing, the size of the round blank should be approximately 46 mm

 Workshop Technology 1000 Questions and Answers Pdf

6. Scribing block is used to

A. Hold the round bars during marking

B. Check the trueness of flat surfaces

C. Locate the centres of round bars

D. Check the surface roughness

Answer: Option B

Solution:

scribing block is a gauge consisting of a scriber mounted on an adjustable stand; used to test the accuracy of plane surfaces.

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7. The cutting edge of a chisel should be

A. Hardened

B. Tempered

C. Hardened and tempered

D. Case hardened

Answer: Option C

Solution:

The cutting edge of a chisel should be Hardened and tempered

A chisel is a tool with a characteristically shaped cutting edge of blade on its end, for carving or cutting a hard material such as wood, stone, or metal by hand, struck with a mallet, or mechanical power.

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8. For gas welding, the pressure desired at the welding torch for acetylene is

A. 7 to 103 kN/m^2

B. 70 to 280 kN/m^2

C. 280 to 560 kN/m^2

D. 560 to 840 kN/m^2

Answer: Option A

Solution:

A welding torch head is used to weld metals those are difficult to weld by using electrode. It can be identified by having only one or two pipes running to the nozzle, no oxygen-blast trigger, and two valve knobs at the bottom of the handle letting the operator adjust the oxygen and fuel flow respectively.

For gas welding, the pressure desired at the welding torch for acetylene is 7 to 103 kN/m^2 .

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9. The fullers are used

A. For finishing flat surfaces

B. For necking down a piece of work

C. For punching a hole

D. To finish the punched hole

Answer: Option B

Solution:

In metalworking, a fuller is a tool used to form metal when hot. The fuller has a rounded, either cylindrical or parabolic, nose and may either have a handle or a shank.

The shank of the lower fuller allows the fuller to be inserted into the hardy hole of the anvil.

10. A ring gauge is used to

A. Check the diameter of shafts or studs

B. Test the accuracy of holes

C. Check the clearance between two mating surfaces

D. All of the above

Answer: Option A

Solution:

Ring gauge, is a cylindrical ring of a thermally stable material, often steel, whose inside diameter is finished to gauge tolerance and is used for checking the external diameter of a cylindrical object.

Workshop Technology 1000 Questions and Answers Pdf

11. Lap joints are employed on plates having thickness

A. Less than 3 mm

B. 5 to 10 mm

C. 12.5 mm

D. Above 25 mm

Answer: Option A

Solution:

A lap joint or overlap joint is a joint in which the members overlap. Lap joints can be used to join wood, plastic, or metal.

Lap joints are employed on plates having thickness Less than 3 mm

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12. Thermit welding is often used in

A. Replacing broken gear teeth

B. Repairing broken shears

C. Joining rails, truck frames and locomotive frames etc.

D. All of the above

Answer: Option D

Solution:

Thermit welding is a welding process that employs molten metal to permanently join the conductors.

The process employs an exothermic reaction of a thermite composition to heat the metal, and requires no external source of heat or current.

Thermit welding is often used in replacing broken gear teeth, repairing broken shears and joining rails, truck frames and locomotive frames etc.

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13. Thread rolling is restricted to

A. Ferrous materials

B. Ductile materials

C. Hard materials

D. None of these

Answer: Option B

Solution:

Materials are limited to ductile materials because the threads are cold formed. .

Also, materials with good deformation characteristics are necessary for rolling; these materials include softer (more ductile) metals and exclude brittle materials, such as cast iron.

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14. When a pattern is made in three parts, the ________ is known as a drag.

A. Bottom part

B. Middle part

C. Top part

D. None of these

Answer: Option A

Solution:

Cope and Drag refer to the two halves (top and bottom, respectively) of a Pattern or Mold that is used in the Green Sand Casting Method.

15. Which of the following material can be used for making patterns?

A. Aluminium

B. Wax

C. Lead

D. All of these

Answer: Option D

Solution:

Materials used. Typically, materials used for pattern making are wood, metal or plastics. Wax and Plaster of Paris are also used,

Sugar pine is the most commonly used material for patterns, primarily because it is soft, light, and easy to work

Workshop Technology 1000 Questions and Answers Pdf

16. The purpose of a riser is to

A. Deliver molten metal into the mould cavity

B. Act as a reservoir for the molten metal

C. Feed the molten metal to the casting in order to compensate for the shrinkage

D. Deliver the molten metal from pouring basin to gate

Answer: Option C

Solution:

A riser, also known as a feeder, is a reservoir built into a metal casting mold to prevent cavities due to shrinkage.

Most metals are less dense as a liquid than as a solid so castings shrink upon cooling, which can leave a void at the last point to solidify.

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17. Which of the following welding method uses a pool of molten metal?

A. Carbon arc welding

B. Submerged arc welding

C. TIG arc welding

D. MIG arc welding

Answer: Option B

Solution:

This is a well established and extremely versatile method of welding. Submerged-arc welding (SAW) involves the formation of an arc between a continuously fed electrode and the work piece.

A blanket of powdered flux, which generates a protective gas shield and a slag (and may also be used to add alloying elements to the weld pool), protects the weld zone. A shielding gas is not required.

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18. A casting defect which occurs due to improper venting of sand is known as

A. Cold shuts

B. Blow holes

C. Shift

D. Swell

Answer: Option B

Solution:

A casting defect which occurs due to improper venting of sand is known as Blow holes

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19. Which one of the following material will require the largest size of riser for the same size of casting?

A. Aluminium

B. Cast iron

C. Steel

D. Copper

Answer: Option C

Solution:

Steel will require the largest size of riser for the same size of casting

20. A hacksaw blade is specified by its

A. Length

B. Material

C. Width

D. Number of teeth

Answer: Option A

Workshop Technology 1000 Questions and Answers Pdf

21. The welding process used in joining mild steel shanks to high speed drills, is

A. Spot welding

B. Seam welding

C. Flash butt welding

D. Upset butt welding

Answer: Option C

Solution:

The welding process used in joining mild steel shanks to high speed drills is Flash butt welding

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22. For cutting brass, the hacksaw blade should have ________ teeth per 25 mm.

A. 14

B. 24

C. 32

D. 40

Answer: Option A

Solution:

For cutting brass, the hacksaw blade should have 14 teeth per 25 mm.

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23. In arc welding, the electric arc is produced between the work and the electrode by

A. Voltage

B. Flow of current

C. Contact resistance

D. All of these

Answer: Option C

Solution:

In arc welding, the electric arc is produced between the work and the electrode by Contact resistance

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24. A file removes the metal during

A. Forward stroke

B. Return stroke

C. Both forward and return strokes

D. None of these

Answer: Option A

Solution:

A file removes the metal during Forward stroke

25. Lancing is the operation of

A. Cutting a sheet of metal in a straight line along the length

B. Removal of metal to the desired shape from the edge of a plate

C. Cutting a sheet of metal through part of its length and then bending the cut portion

D. Bending a sheet of metal along a curved axis

Answer: Option C

Solution:

Lancing is the operation of Cutting a sheet of metal through part of its length and then bending the cut portion.

Workshop Technology 1000 Questions and Answers Pdf

26. Notching is the operation of

A. Cutting a sheet of metal in a straight line along the length

B. Removal of metal to the desired shape from the edge of a plate

C. Cutting a sheet of metal through part of its length and then bending the cut portion

D. Bending a sheet of metal along a curved axis

Answer: Option B

Solution:

Notching is the operation of Removal of metal to the desired shape from the edge of a plate

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28. In forehand welding, the weld is made

A. From left to right

B. From right to left

C. First from left to right and then from right to left

D. Either from left to right or from right to left

Answer: Option B

Solution:

In forehand welding, the weld is made From right to left

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29. A diamond pointed chisel is used for cutting

A. Flat surfaces

B. Grooves

C. Key-ways

D. V-shaped grooves

Answer: Option D

Solution:

A diamond pointed chisel is used for cutting V-shaped grooves

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30. Spot welding is used for welding

A. Lap joints in plates having 0.025 mm to 1.25 mm thickness

B. Lap joints in plates having thickness above 3 mm

C. Butt joints in plates having 0.025 mm to 1.25 mm thickness

D. Butt joints in plates having thickness above 3 mm

Answer: Option A

Solution:

Spot welding is used for welding Lap joints in plates having 0.025 mm to 1.25 mm thickness

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Workshop Technology 1000 Questions and Answers Pdf

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