Question 1

High helix drills are used for deep hole drilling in

Accepted Answer

High helix drills are used for deep hole drilling in Aluminium because they have a high helix angle that helps to evacuate chips and prevent clogging.

Question 2

Choose incorrect statement. With increasing cutting speed

Accepted Answer

With increasing cutting speed, machining cost decreases and tool cost increases, but the total cost does not necessarily decrease as it depends on the balance between these two factors.

Question 3

Panes are used

Accepted Answer

Planes are tools used to make timber surfaces uniform and smooth by shaving off thin layers of wood.

Question 4

The main constituent of moulding sand is

Accepted Answer

Silica is the main constituent of moulding sand, providing the bulk material for the sand casting process.

Question 5

An accurate lathe in India is identified as

Accepted Answer

Grade I lathes in India are identified as accurate lathes, according to the Indian Standards classification.

Question 6

Indexing for 107 divisions can be done by

Accepted Answer

Differential indexing is used for dividing a workpiece into a large number of divisions, such as 107, which cannot be directly obtained by simple or angular indexing.

Question 7

Which of the following process provides continuous welds between two sheets?

Accepted Answer

Seam welding is a process that produces a continuous weld along the seam of two sheets, creating a durable and uniform joint. This contrasts with spot and projection welding, which create individual weld points rather than continuous seams. Parting off is a machining process, not a welding technique.

Question 8

In thermit welding, heat is generated by

Accepted Answer

Thermit welding utilizes a chemical reaction between finely divided aluminium and iron oxide to generate the high temperatures needed for welding, producing molten iron as a byproduct.

Question 9

The common ratio for geometrical speeds in geometrical progression lies between

Accepted Answer

The common ratio for geometrical speeds in geometrical progression typically lies between 1.0 to 2.0 to ensure a steady but not overly rapid increase in the sequence's terms.

Question 10

Wipping is the process of

Accepted Answer

Wipping refers to the process of connecting load pipes by using a soldering alloy.

Question 11

The term CLA (Centre Line Average) is used in connection with

Accepted Answer

CLA (Centre Line Average) is a term used to describe the average roughness of a surface, indicating the surface finish quality.

Question 12

A piercing operation in which the entire contour is not cut, is known as

Accepted Answer

Lancing is a piercing operation where a portion of the material is cut and bent without removing the entire contour, leaving the material attached.

Question 13

Which variety of copper has the highest purity?

Accepted Answer

High conductivity copper is known for its high purity, often exceeding 99.9% copper content, which is essential for electrical applications due to its excellent conductivity properties.

Question 14

Magna flux is

Accepted Answer

Magnaflux is a non-destructive testing method that uses magnetic fields and ferrous particles to detect surface and near-surface discontinuities in ferromagnetic materials.

Question 15

A mandrel is

Accepted Answer

The answer of A mandrel is
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Question 16

During soldering operation, the main function of solder iron is to

Accepted Answer

The answer of During soldering operation, the main function of...

Question 17

Dielectric is essentially required in

Accepted Answer

Dielectric is essentially required in the Electrical Discharge Machining (EDM) process. It acts as an insulating medium between the electrode and the workpiece, and it helps in flushing away the eroded metal particles.

Question 18

Core chaplet is

Accepted Answer

Core chaplet is used to provide support to the core within a mold to ensure that it remains in its proper position during the casting process.

Question 19

Drilling operation is an example of

Accepted Answer

Drilling operation is an example of oblique cutting because the cutting edge of the drill bit is not perpendicular to the direction of cutting, creating an oblique angle.

Question 20

While machining a brass casting on a lathe, the type of chuck used is

Accepted Answer

The answer of While machining a brass casting on a...

Quiz 12: Manufacturing Processes: Wood Moisture, Alloyed Cast Iron, Cutting Tools, Welding