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Chapter:

1. Which of following code is used to give input of cutter offset data?

G30 G20 G10 G04

G10

G10 is used to give input of cutter offset data.

Hint Answer

2. The passageways in parting plane through which molten flow is regulated is known as?

Core Chaplet Gate Runner

Runner

Runners are passages that distribute molten metal from sprue to gates or risers around cavity inside a mold.

Hint Answer

3. Which of following code is used to give cutter offset compensation, left of a part surface?

G40 G41 G42 G50

G41

G41 is used to give cutter offset compensation, left of part surface.

Hint Answer

4. A small funnel shaped cavity at top of mould into which metal is poured is known as?

Sprue Core Pouring basin Gate

Pouring basin

In metal casting, a basin on top of a mold that receives molten metal before it enters sprue or downgate is known as pouring basin.

Hint Answer

5. Which of following code will give linear interpolation movement?

G00 G01 G78 G65

G01

G01 will give linear interpolation movement.

Hint Answer

6. Caine curve is a graph between?

Volume ratio and solidification ratio Volume ratio to freezing ratio Volume ratio to heating ratio Freezing ratio to time ratio

Volume ratio to freezing ratio

Caine curve is a graph between volume ratios to freezing ratio. Caine curve is used to determine exact volume for perfect freezing.

Hint Answer

7. Which one of statements is not correct in metal casting?

Rapid cooling produces a solidified skin or shell Those grain that have favourable orientation will grow preferentially Cast iron has wide mushy zones Lack of uniformity in grains size and distribution will cause anisotropic properties

Cast iron has wide mushy zones

Cast iron has low range of mushy zone. Rapid cooling produces a solidified skin or shell and Lack of uniformity in grains size and distribution will cause anisotropic properties.

Hint Answer

8. To have good surface finish and accuracy which of allowance is given?

Draft allowance Shrinkage allowance Shake allowance Machining allowance

Machining allowance

The necessity of machining allowance is as follows: 1. for removing surface roughness, slag, dirt and or imperfections form casting, 2. For obtaining exact dimensions on casting, 3. To achieve desired surface finish on casting.

Hint Answer

9. If volume to surface area ratio is 2 for riser and for casting it is 4, n freezing ratio is?

2 4 8 .5

.5

The freezing ratio (x) of mould is defined as ratio of cooling characteristics of casting to riser:
x = \(\displaystyle\frac{(\frac{surface \,area}{volume})_{casting}}{(\frac{surface \,area}{volume})_{riser}}\)
Freezing ratio, as per given values in question, x = \(\displaystyle\frac{(\frac{surface \,area}{volume})_{casting}}{(\frac{surface \,area}{volume})_{riser}} = \frac{2}{4}\) = 0.5.

Hint Answer

10. Wastage of material in powder metallurgy as scrap is ________

large small depends on other factors medium

small

Due to fact that, powder metallurgy giving us near net shapes, thus less machining is required for final product, so less wastage of material as scrap.

Hint Answer

Nexttt

All Chapters

View all Chapter and number of question available From each chapter from Manufacturing-engineering-I

Crystallography and Defects in Solid

Crystallography and Defects in Solid

Mechanical Properties and Testing and Phase Diagram

Mechanical Properties and Testing and Phase Diagram

Ferrous Metal, Non-Ferrous Metal and Heat Treatment

Ferrous Metal, Non-Ferrous Metal and Heat Treatment

Magnetic Properties of Material, Electrical Properties of Materials, Plastics, Ceramics and Composites

Magnetic Properties of Material, Electrical Properties of Materials, Plastics, Ceramics and Composites

Metal Cutting

Cutting-Tool Materials and Cutting Fluids

Cutting-Tool Materials and Cutting Fluids

Lathe Machines, Shaping and Slotting

Lathe Machines, Shaping and Slotting

Milling, Drilling and Reaming

Milling, Drilling and Reaming

Grinding, Surface Finishing Operations and Unconventional Machining Processes

Grinding, Surface Finishing Operations and Unconventional Machining Processes

Metrology, Welding, Fusion-Welding Processes and Unconventional Welding Methods

Metrology, Welding, Fusion-Welding Processes and Unconventional Welding Methods

Powder Metallurgy, NC Part Programming and Metal Casting and Gating Systems

Powder Metallurgy, NC Part Programming and Metal Casting and Gating Systems

Forming, Metal Forming Processes and Heat Transfer

Forming, Metal Forming Processes and Heat Transfer

Jigs and Fixture, Applications and Gears

Jigs and Fixture, Applications and Gears

Topics

This Chapter consists of the following topics

Powder Metallurgy

NC Part Programming and Metal Casting and Gating Systems

Which of following code is used to give input of cutter offset data?

The passageways in parting plane through which molten flow is regulated is known as?

Which of following code is used to give cutter offset compensation, left of a part surface?

A small funnel shaped cavity at top of mould into which metal is poured is known as?

Which of following code will give linear interpolation movement?

Caine curve is a graph between?

Which one of statements is not correct in metal casting?

To have good surface finish and accuracy which of allowance is given?

If volume to surface area ratio is 2 for riser and for casting it is 4, n freezing ratio is?

Wastage of material in powder metallurgy as scrap is ________

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