Mechanical Engineering Exam  >  Mechanical Engineering Tests  >  Test: Casting Processes - 3 - Mechanical Engineering MCQ

Test: Casting Processes - 3 - Mechanical Engineering MCQ


Test Description

30 Questions MCQ Test - Test: Casting Processes - 3

Test: Casting Processes - 3 for Mechanical Engineering 2024 is part of Mechanical Engineering preparation. The Test: Casting Processes - 3 questions and answers have been prepared according to the Mechanical Engineering exam syllabus.The Test: Casting Processes - 3 MCQs are made for Mechanical Engineering 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Casting Processes - 3 below.
Solutions of Test: Casting Processes - 3 questions in English are available as part of our course for Mechanical Engineering & Test: Casting Processes - 3 solutions in Hindi for Mechanical Engineering course. Download more important topics, notes, lectures and mock test series for Mechanical Engineering Exam by signing up for free. Attempt Test: Casting Processes - 3 | 30 questions in 90 minutes | Mock test for Mechanical Engineering preparation | Free important questions MCQ to study for Mechanical Engineering Exam | Download free PDF with solutions
Test: Casting Processes - 3 - Question 1

Which of the following materials can be used for making patterns?
1. Aluminium
2. Wax
3. Mercury
4. Lead

Detailed Solution for Test: Casting Processes - 3 - Question 1

Mercury is not used for making patterns.

Test: Casting Processes - 3 - Question 2

Match the List-I (Equipment) with List-II (Functions):
List-I
A. Hot chamber machine
B. Muller
C. Dielectric baker
D. Sand blasting
List-II
1. Cleaning
2. Core making
3. Die casting
4. Annealing
5. Mixing
Codes:
    A B C D
(a) 3 5 2 1
(b) 4 2 5 3
(c) 4 2 3 1
(d) 3 5 1 2

1 Crore+ students have signed up on EduRev. Have you? Download the App
Test: Casting Processes - 3 - Question 3

Which of the following materials requires highest shrinkage allowance?

Test: Casting Processes - 3 - Question 4

Chills are used in casting moulds to

Detailed Solution for Test: Casting Processes - 3 - Question 4
  • Directional solidification: This is the primary purpose of chills in casting molds. They act as heat sinks, drawing heat away from specific areas of the casting and promoting solidification to start at a specific point and progress in a desired direction. This helps to minimize shrinkage defects and improve the overall quality of the casting.
  • Reduce blow holes (B): While achieving directional solidification can indirectly help reduce blow holes by promoting even cooling, chills aren't directly used for this purpose.
Test: Casting Processes - 3 - Question 5

Directional solidification can be achieved by providing

Detailed Solution for Test: Casting Processes - 3 - Question 5
  • Chills: Chills are heat sinks that promote solidification in a specific direction.
  • Padding: This refers to additional sections added to the casting design that solidify last. They act as a reservoir of molten metal to feed the solidifying casting and minimize shrinkage defects in critical areas. Padding works in conjunction with chills to achieve directional solidification.

Therefore, using chills to initiate solidification in a desired direction and padding to provide a reservoir of molten metal for feeding are the key elements for achieving directional solidification.

Test: Casting Processes - 3 - Question 6

Chaplets are used in mould for

Detailed Solution for Test: Casting Processes - 3 - Question 6

Chaplets are used to support the core inside the mould cavity, take care of its own weight and overcome the metallostatic forces.

Test: Casting Processes - 3 - Question 7

The casting defect which is not caused by the high pouring temperature of melt is

Detailed Solution for Test: Casting Processes - 3 - Question 7

Metal penetration is not caused due to high pouring temperature. It caused due to improper ramming of sand.

Test: Casting Processes - 3 - Question 8

Fluidity is greatly influenced by

Detailed Solution for Test: Casting Processes - 3 - Question 8

Fluidity can be defined as the length of spiral covered by the molten metal before it get solidifies.
Fluidity is the function of temperature, higher the temperature, more will be the fluidity.

Test: Casting Processes - 3 - Question 9

Which of the following materials has more shrinkage allowances

Test: Casting Processes - 3 - Question 10

The two parts of a sand casting mould are called

Detailed Solution for Test: Casting Processes - 3 - Question 10

Cope and drag are two parts of the casting mould.
Upper part is called cope and lower part is called drag.

Test: Casting Processes - 3 - Question 11

While pouring molten metal in the mould of the molten metal does not appear in the riser. It indicates

Detailed Solution for Test: Casting Processes - 3 - Question 11

If molten metal does not appear in the riser then it means there is either insufficient molten metal or an obstruction between sprue and riser.

Test: Casting Processes - 3 - Question 12

In solidification of metal during casting, compensation for solid contraction is

Detailed Solution for Test: Casting Processes - 3 - Question 12

Liquid shrinkage and shrinkage during phase change is provided by riser and solid shrinkage can be compensated by providing allowances over the pattern.

Test: Casting Processes - 3 - Question 13

Which of the following casting mould uses metal moulds?

Detailed Solution for Test: Casting Processes - 3 - Question 13

In die casting some permanent mould is used which may be made of metal.

Test: Casting Processes - 3 - Question 14

What is the purpose of inoculation

Detailed Solution for Test: Casting Processes - 3 - Question 14
  • Inoculation is a process used primarily in cast iron production. It involves adding small amounts of specific elements, often alloys containing silicon and other elements, to the molten metal just before pouring.
  • The primary purpose of inoculation is to influence the solidification process and microstructure of the cast iron. By introducing these elements, the inoculant provides nucleation sites for graphite precipitation. This can lead to several benefits:
    • Finer and more uniform graphite distribution: This improves the mechanical properties of the cast iron, such as strength and ductility.
    • Reduced formation of iron carbide: This can help prevent brittleness in the casting.
  • Improved finish (A): While inoculation can indirectly contribute to a better surface finish by influencing the solidification process, it's not the primary goal.
Test: Casting Processes - 3 - Question 15

Cores are used in the casting to

Detailed Solution for Test: Casting Processes - 3 - Question 15

They create the negative space within the mold that results in a hollow section in the final casting.

Test: Casting Processes - 3 - Question 16

Misrun is a casting defect which occur due to

Detailed Solution for Test: Casting Processes - 3 - Question 16

Misrun is a casting defect caused due to insufficient fluidity of molten metal.

Test: Casting Processes - 3 - Question 17

Scab is a

Detailed Solution for Test: Casting Processes - 3 - Question 17

Scab is sand casting defect caused due to improper ramming of moulding sand.

Test: Casting Processes - 3 - Question 18

An improper riser may give rise to a defect called

Detailed Solution for Test: Casting Processes - 3 - Question 18

 An improper riser may give rise to a defect called shrinkage cavity

Test: Casting Processes - 3 - Question 19

The casting defect caused by the erosion of sand

Detailed Solution for Test: Casting Processes - 3 - Question 19

Sand wash is an irregularity in the surface of the casting resulting from the erosion of the sand mould during pouring and the contour of the erosion is formed in the surface of the final casting.

Test: Casting Processes - 3 - Question 20

The purpose of gate is to

Detailed Solution for Test: Casting Processes - 3 - Question 20

Gate is the opening through which the molten metal enters the mould cavity. The shape and the cross section of the ingot should be such that it can readily be broken off after casting solidification and also allow the molten metal to enter quietly into the mould cavity.

Test: Casting Processes - 3 - Question 21

The purpose of riser is to

Detailed Solution for Test: Casting Processes - 3 - Question 21

A riser, also known as a feeder, is a reservoir built into a metal casting mold to prevent cavities due to shrinkage.
Most metals are less dense as a liquid than as a solid so castings shrink upon cooling, which can leave a void at the last point to solidify.

Test: Casting Processes - 3 - Question 22

The casting method adopted for ornament toys of nonferrous alloys is

Detailed Solution for Test: Casting Processes - 3 - Question 22

Slush casting is used to produce ornament, small toys etc.

Test: Casting Processes - 3 - Question 23

Sprue in casting refers to

Detailed Solution for Test: Casting Processes - 3 - Question 23


hence sprue is a vertical passage in the parting plane through which molten metal from the pouring basin reaches the mould cavity.

Test: Casting Processes - 3 - Question 24

Bottom gating system is sometimes preferred in casting because

Detailed Solution for Test: Casting Processes - 3 - Question 24

Bottom gating is preferred for reducing splashing and turbulence:

  • Reduced falling distance: With the gates at the bottom, the molten metal has a shorter distance to fall before entering the mold cavity. This minimizes splashing and turbulence that can occur when the metal falls from a height.
  • Slag and dross settling: Since the gates are at the bottom, any slag or dross (impurities) present in the molten metal tend to settle there before entering the casting cavity. This helps to achieve cleaner metal in the final casting.
Test: Casting Processes - 3 - Question 25

Which one of the following processes produces a casting when pressure forces the molten metal into the mould cavity.

Detailed Solution for Test: Casting Processes - 3 - Question 25

Die casting are of two types:
1. Pressure die casting
2. Gravity die casting
In pressure die casting the molten metal is pressurized to enter into the mould while in case of gravity die casting molten metal fined into the mould by means of gravitational force.

Test: Casting Processes - 3 - Question 26

In a green sand moulding process, uniform ramming leads to

Detailed Solution for Test: Casting Processes - 3 - Question 26

Uniform ramming of sand is very necessary for green sand moulding process. Uniform ramming of sand during mould preparation improves mould strength, and makes it dimensionally stable. Uniform ramming done to obtain a smooth and hard casting surface which prevents break out.
Correct answer is D.

Test: Casting Processes - 3 - Question 27

Which of the following are the most likely characteristics in centrifugal casting?

Detailed Solution for Test: Casting Processes - 3 - Question 27

Casting acquired high density and are distinguished for their fine grained structure and high mechanical strength

Test: Casting Processes - 3 - Question 28

The centrifugal casting method is used for casting articles of

Detailed Solution for Test: Casting Processes - 3 - Question 28

In centrifugal casting mould in rotated about horizontal axis.

Test: Casting Processes - 3 - Question 29

The impurities in true centrifugal casting

Detailed Solution for Test: Casting Processes - 3 - Question 29

Since impurities are lighter than the metal hence they get collected at the inner surface of the casting.

Test: Casting Processes - 3 - Question 30

Consider the following ingredients used in moulding
1. Dry silica sand
2. Clay
3. Phenol formaldehyde
4. Sodium silicate
Q. These used for shell moulding include

Detailed Solution for Test: Casting Processes - 3 - Question 30
  • Dry silica sand: This is the primary base material in shell molding. It provides the structure and strength to the mold.
  • Phenol formaldehyde: This is a thermosetting resin binder used in shell molding. When mixed with a catalyst, it reacts and cures to form a strong bond between the sand grains, creating the shell.
Information about Test: Casting Processes - 3 Page
In this test you can find the Exam questions for Test: Casting Processes - 3 solved & explained in the simplest way possible. Besides giving Questions and answers for Test: Casting Processes - 3, EduRev gives you an ample number of Online tests for practice

Top Courses for Mechanical Engineering

Download as PDF

Top Courses for Mechanical Engineering