Workshop Technology

Q1: Thread rolling is restricted to

A ferrous materials

B ductile materials

C hard materials

D none of these

Q2: Metal patterns are used for

A small castings

B large castings

C complicated castings

D large scale production of castings

Q3: The electrodes used in spot welding have a tip of

A stainless steel

B aluminium

C copper

D brass

Q4: The chisel used for cutting key ways is

A flat chisel

B cape chisel

C round nose chisel

D diamond pointed chisel

Q5: The tolerance produced by shell moulding process of casting is

A +0.05 mm

B ±0.2 mm

C +0.5 mm

D ±1 mm

Q6: A zinc diffusion process is called

A galvanising

B anodising

C parkerising

D sherardizing

Q7: The algebraic difference between the minimum limit and the basic size is called

A actual deviation

B upper deviation

C lower deviation

D fundamental deviation

Q8: Galvanising is a

A zinc diffusion process

B process of coating zinc by hot dipping

C process used for making thin phosphate coating on steel

D none of the above

Q9: Which of the following welding process uses non-consumable electrodes?

A TIG welding

B MIG welding

C Manual arc welding

D Submerged arc welding

Q10: Which of the following methods can be used for manufacturing 2 metre long seamless metallic tubes?

A Drawing

B Extrusion

C Rolling

D Extrusion and rolling

Q11: In a four high rolling mill, there are four rolls out of which

A one is working roll and three are backing up rolls

B two are working rolls and two are backing up rolls

C three are working rolls and one is backing up roll

D all of the four are working rolls

Q12: Surface plate is used to check the trueness of flat surfaces.

A True

B False

Q13: In welding copper alloys with TIG arc welding

A direct current with straight polarity is used

B direct current with reversed polarity is used

C alternating current is used

D any one of these

Q14: In average work, the tolerance produced by investment casting method is

A ±0.05 mm

B +0.2 mm

C +05 mm

D +1 mm

Q15: 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 minimised

D cut blanks are straight

Q16: A taper provided on the pattern for its easy and clean withdrawl from the mould is known as

A machining allowance

B draft allowance

C shrinkage allowance

D distortion allowance

Q17: The blank diameter used in thread rolling will be

A equal to minor diameter of the thread

B equal to pitch diameter of the thread

C a little larger than the minor diameter of the thread

D a little larger than the pitch diameter of the thread

Q18: 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

Q19: The property of sand due to which it evolves a great amount of steam and other gases is called

A collapsibility

B permeability

C cohesiveness

D adhesiveness

Q20: A plug gauge is used to check the diameter of shafts and studs.

A Correct

B Incorrect

Q21: The temperature at which the new grains are formed in the metal is called

A lower critical temperature

B upper critical temperature

C eutectic temperature

D recrystallisation temperature

Q22: A saw which cuts wood during the return stroke of the saw is known as

A push saw

B pull saw or draw saw

Q23: 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

Q24: The low pressure acetylene is produced at the welding site by the chemical reaction between water and calcium carbonate.

A Correct

B Incorrect

Q25: In __________ welding, the weld may be made either from left to right or from right to left.

A fore-hand

B back-hand

C vertical

Q26: In back-hand welding, the angle between the welding torch and the work is kept as

A 30°-40°

B 40°-50°

C 50°-60°

D 60°-70°

Q27: In a centrifugal casting method

A core is made of sand

B core is made of ferrous metal

C core is made of non-ferrous metal

D no core is used

Q28: 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

Q29: In a hot 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 high temperature and pressure is used

Q30: In a bilateral system of tolerance, the tolerance is allowed on

A one side of the actual size

B one side of the nominal size

C both sides of the actual size

D both sides of the nominal size

Q31: When a pattern is made in three parts, the bottom part is known as a cope.

A True

B False

Q32: A pattern maker's shrinkage rule considers

A all pattern allowances

B only shrinkage allowance

C all materials to be cast

D all materials of the pattern

Q33: In submerged arc welding, an arc is produced between a

A carbon electrode and the work

B metal electrode and the work

C bare metal electrode and the work

D two tungsten electrodes and the work

Q34: The instrument which has all the features of try-square, bevel protractor, rule and scriber, is

A outside micrometer

B inside micrometer

C depth gauge micrometer

D combination set

Q35: The bloom is smaller than a billet.

A True

B False

Q36: The accuracy of micrometers, calipers, dial indicators can be checked by a

A feeler gauge

B slip gauge

C ring gauge

D plug gauge

Q37: The machining allowance provided on patterns depends upon

A type of casting metal

B size and shape of casting

C method of casting used

D all of these

Q38: The ferrous metals require more machining allowance than non-ferrous metals.

A True

B False

Q39: The cold chisels are made by

A drawing

B rolling

C piercing

D forging

Q40: The draft or taper allowance on casting is generally

A 1 to 2 mm/m

B 2 to 5 mm/m

C 5 to 10 mm/m

D 10 to 15 mm/m

Q41: The cross-section of a chisel is usually

A rectangular

B square

C hexagonal

D octagonal

Q42: In shielded arc welding

A large electrode is used

B welding rod coated with slag is used

C welding rod coated with fluxing material is used

D none of the above

Q43: In a hot chamber die casting machine

A ferrous alloys with low melting temperature are casted

B ferrous alloys with high melting temperature are casted

C non-ferrous alloys with low melting temperature are casted

D non-ferrous alloys with high melting temperature are casted

Q44: The type of file used for a wood work is

A single-cut file

B double cut file

C rasp-cut file

D any one of these

Q45: A zinc diffusion process is called

A galvanising

B anodising

C parkerising

D sherardizing

Q46: When a hole or cavity to be cored is not in line with the parting surface, then a __________ is used.

A horizontal core

B vertical core

C drop core

D balanced core

Q47: In a die casting method, the molten metal is forced into mould under high pressure.

A Correct

B Incorrect

Q48: Blanking and piercing operations can be performed simultaneously in a

A simple die

B progressive die

C compound die

D combination die

Q49: In a centrifugal casting method, the impurities are collected in the centre of the casting.

A Yes

B No

Q50: The temperature of oxy-hydrogen flame is __________ oxy-acetylene flame.

A same as

B less than

C more than

Q51: The centrifugal casting method, is used for casting articles of

A symmetrical shape about vertical axis

B symmetrical shape about horizontal axis

C irregular shape

D non-ferrous metal only

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