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Workshop Technology MCQ

The blank diameter used in thread rolling will be

Equal to pitch diameter of the thread

Equal to minor diameter of the thread

A little larger than the pitch diameter of the thread

A little larger than the minor diameter of the thread

Answer

Correct Answer: A little larger than the minor diameter of the thread

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

True

False

Answer

Correct Answer: True

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

+0.2 mm

+1 mm

+05 mm

±0.05 mm

Answer

Correct Answer: ±0.05 mm

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

Same as

More than

Less than

Answer

Correct Answer: Less than

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

One is working roll and three are backing up rolls

Two are working rolls and two are backing up rolls

Three are working rolls and one is backing up roll

All of the four are working rolls

Answer

Correct Answer: Two are working rolls and two are backing up rolls

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In welding copper alloys with TIG arc welding

Direct current with reversed polarity is used

Direct current with straight polarity is used

Any one of these

Alternating current is used

Answer

Correct Answer: Direct current with straight polarity is used

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

Fore-hand

Back-hand

Vertical

Answer

Correct Answer: Vertical

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

Combination set

Inside micrometer

Outside micrometer

Depth gauge micrometer

Answer

Correct Answer: Combination set

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In a centrifugal casting method

Core is made of non-ferrous metal

No core is used

Core is made of sand

Core is made of ferrous metal

Answer

Correct Answer: No core is used

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The purpose of a riser is to

Deliver the molten metal from pouring basin to gate

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

Deliver molten metal into the mould cavity

Act as a reservoir for the molten metal

Answer

Correct Answer: Feed the molten metal to the casting in order to compensate for the shrinkage

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

True

False

Answer

Correct Answer: False

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

False

True

Answer

Correct Answer: True

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

Plug gauge

Slip gauge

Ring gauge

Feeler gauge

Answer

Correct Answer: Slip gauge

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The draft or taper allowance on casting is generally

2 to 5 mm/m

5 to 10 mm/m

10 to 15 mm/m

1 to 2 mm/m

Answer

Correct Answer: 1 to 2 mm/m

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

Correct

Incorrect

Answer

Correct Answer: Correct

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

Push saw

Pull saw or draw saw

Answer

Correct Answer: Pull saw or draw saw

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Blanking and piercing operations can be performed simultaneously in a

Combination die

Progressive die

Simple die

Compound die

Answer

Correct Answer: Compound die

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In a hot chamber die casting machine

Melting pot is separate from the machine

Melting pot is an integral part of the machine

Melting pot may have any location

High temperature and pressure is used

Answer

Correct Answer: Melting pot is an integral part of the machine

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The cold chisels are made by

Piercing

Forging

Rolling

Drawing

Answer

Correct Answer: Forging

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