Online Mechanical Engineering Test - Workshop Technology Test

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Total number of questions: 20.
Time allotted: 30 minutes.
Each question carries 1 mark; there are no negative marks.
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The bloom is smaller than a billet.

True

False

[#]

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

[#]

The machining allowance provided on patterns depends upon

type of casting metal

size and shape of casting

method of casting used

all of these

[#]

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

[#]

Which of the following statement is wrong?

The mortise gauge has two scribing pins.

The gouges are chisels with a hollow shaped blade.

An auger is a planing tool

all of these

[#]

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

bottom part

middle part

top part

[#]

In a __________ , two or more operations are performed simultaneously at the single stroke of the ram.

simple die

progressive die

combination die

compound die

[#]

A sand employed on the faces of the pattern before moulding, is called

green sand

dry sand

loam sand

parting sand

[#]

Thermit, used in thermit welding, is a mixture of

charcoal and iron oxide

charcoal and aluminium

iron oxide and aluminium

charcoal, iron oxide and aluminium

[#]

10.

In fore-hand welding, the weld is made

from left to right

from right to left

first from left to right and then from right to left

either from left to right or from right to left

[#]

11.

The width of slot cut by a hacksaw blade is __________ the width of the blade.

equal to

less than

greater than

[#]

12.

The recrystallisation temperature of steel is

400° C

600° C

800° C

none of these

[#]

13.

A gimlet is a __________ tool.

boring

marking

[#]

14.

The purpose of a gate is to

deliver molten metal into the mould cavity

act as a reservoir for the molten metal

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

deliver molten metal from pouring basin to gate

[#]

15.

Piercing is an operation of cutting

a cylindrical hole in a sheet of metal by the punch and the die

a hole (other than cylindrical) in a sheet of metal by the punch and the die

a flat sheet to the desired shape

a number of holes evenly spaced in a regular pattern on a sheet of metal

[#]

16.

Acetylene gas is stored in cylinders in

solid form

gaseous form

liquid form

any one of these

[#]

17.

The oxygen cylinder is usually painted with

black colour

white colour

maroon colour

yellow colour

[#]

18.

Sand wash is a casting defect which

results in a mismatching of the top and bottom parts of a casting

results in general enlargement of the casting

occurs near the ingates as rough lumps on the surface of a casting

occurs as sand patches on the upper surface of a casting

[#]

19.

A hacksaw blade is specified by its

length

material

width

number of teeth

[#]

20.

For smoothing and cleaning out depressions in the mould, a __________ is used.

slick

lifter

swab

gagger

[#]

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Online Mechanical Engineering Test - Workshop Technology Test

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