Workshop Technology Short Questions and Answers

Questions

41 The metal patterns as compared to wooden patterns require less

A Shrinkage allowance

B Machining allowance

C Draft allowance

D Distortion allowance

View Answer

Answer: Draft allowance

42 According to Indian standards, the total numbers of tolerance grades are

A 8

B 12

C 18

D 20

View Answer

Answer: 18

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43 The chisel used for cutting key ways is

A Flat chisel

B Cape chisel

C Round nose chisel

D Diamond pointed chisel

View Answer

Answer: Cape chisel

44 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

View Answer

Answer: Cutting a sheet of metal through part of its length and then bending the cut portion

45 When the molten metal is fed in the cavity of a metallic mould by gravity, the method of casting is known as

A Die casting method

B Slush casting method

C Permanent mould casting method

D Centrifugal casting method

View Answer

Answer: Permanent mould casting method

46 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

View Answer

Answer: Flash butt welding

47 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

View Answer

Answer: Steel

48 The advantage of Thermit welding is that

A All parts of the weld section are molten at the same time

B Weld cools almost uniformly

C Results in a minimum problem with internal residual stresses

D All of the above

View Answer

Answer: All of the above

49 Loam sand is a mixture of

A 30% sand and 70% clay

B 50% sand and 50% clay

C 70% sand and 30% clay

D 90% sand and 10% clay

View Answer

Answer: 50% sand and 50% clay

50 The teeth of hacksaw blade are bent

A Towards right

B Towards left

C Alternately towards right and left and every third or fourth left straight

D May be bent in any direction

View Answer

Answer: Alternately towards right and left and every third or fourth left straight

51 Structural sections such as rails, angles, I-beams are made by

A Hot rolling

B Hot drawing

C Hot piercing

D Hot extrusion

View Answer

Answer: Hot rolling

52 Metal patterns are used for

A Small castings

B Large castings

C Complicated castings

D Large scale production of castings

View Answer

Answer: Large scale production of castings

53 When more volume of acetylene and less volume of oxygen is supplied, then a ________ flame is obtained.

A Neutral

B Oxidizing

C Carburising

D None of these

View Answer

Answer: Carburising

54 The process of decreasing the cross-section of a bar and increasing its length, is called

A Drawing down

B Upsetting

C Spinning

D Peening

View Answer

Answer: Drawing down

55 Cutting and forming operations can be performed in a single operation in a

A Simple die

B Progressive die

C Compound die

D Combination die

View Answer

Answer: Combination die

56 In a cold chamber die casting machine

A Melting pot is separate from the machine

B Melting pot is an integral part of the machine

C Melting pot may have any location

D Low temperature and pressure is used

View Answer

Answer: Melting pot is separate from the machine

57 Seam welding is best adopted for metal thickness ranging from

A 0.025 to 3 mm

B 3 to 5 mm

C 5 to 8 mm

D 8 to 10 mm

View Answer

Answer: 0.025 to 3 mm

58 In order to check the clearance between two mating surfaces, a ________ gauge should be used.

A Ring

B Plug

C Feeler

D None of these

View Answer

Answer: Feeler

59 The hot working of metals is carried out

A At the recrystallisation temperature

B Below the recrystallisation temperature

C Above the recrystallisation temperature

D At any temperature

View Answer

Answer: Above the recrystallisation temperature

60 In blanking operation, the clearance is provided on

A Punch

B Die

C Half on the punch and half on the die

D Either on punch or die depending upon designer's choice

View Answer

Answer: Punch

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