MCQ’s On Foundry Mechanizations
Q. Mechanization basically deals with computer technology and electronic data processing that replaces human labour with machines.
A. True
B. False
.
Answer: B
Q. In mechanization of foundry processes, zinc based alloys have less application due to their low structural stability.
A. True
B. False
.
Answer: A
Q. Defects-less casting is the main consideration in mechanizing a foundry.
A. True
B. False
.
Answer: B
Q. The economic success in the production of castings is mainly depended on the demand for a product.
A. True
B. False
.
Answer: A
Q. The transportation cost of casting is generally less as compared to the cost of mechanization.
A. True
B. False
.
Answer: B
Q. In the mechanized foundry, the breakdown of one part of a producing unit may affect the entire production.
A. True
B. False
.
Answer: A
Q. The maintenance cost in mechanized foundry is also cheap as the cost of castings produced by mechanization.
A. True
B. False
.
Answer: B
Q. In mechanized foundry, rubber conveyor cannot be used for long time during production of castings.
A. True
B. False
.
Answer: A
Q. In sand moulding, the thickness of sand mould and bond strength should be high as much as possible to avoid sand inclusion in machine parts.
A. True
B. False
.
Answer: B
Q. Using sand in mould mixture can cause problems to machines in the mechanized foundry.
A. True
B. False
.
Answer: A
Q. In the mechanized foundry, a roller conveyor is used for the transportation of moulds, on which moulds are transferred by rolling.
A. True
B. False
.
Answer: B
Q. In sand handling system, the moulds are generally taken out in shaking manner.
A. True
B. False
.
Answer: A
Q. In the mechanized foundry, rubber coated chills are used for supporting the cores in the mould system.
A. True
B. False
.
Answer: B
Q. In the mechanized foundry, using of synthetic sand in moulding makes a casting of better quality.
A. True
B. False
.
Answer: A
Q. Operating cost involved in the mechanized foundry is more than the cost of any other simple foundry for large production of castings.
A. True
B. False
.
Answer: B
Q. Mechanization also standardizes the working and equipment used in the production of castings.
A. True
B. False
.
Answer: A
Q. In the mechanized foundry, insertion of cores in mould is very easy and normally done with high tech machines.
A. True
B. False
.
Answer: B
Q. Mechanization can eliminate the use of moulding machines in a foundry.
A. True
B. False
.
Answer: A
Q. In the mechanized foundry, removal of casting from mould is not easy and it is generally performed manually.
A. True
B. False
.
Answer: B
Q. In the mechanized foundry, which of the following parts is used for suspending the ladle during pouring of molten metal?
A. Runner
B. Gate
C. Sprue
D. Crane
.
Answer: D
Q. By implementing mechanization in vacuum moulding, it forms better castings with good reliability.
A. True
B. False
.
Answer: B
Q. Mechanization can be the reason for creativity and involvement in working for the production of castings.
A. True
B. False
.
Answer: A
Q. In the mechanized foundry, the process of solidification is done manually and it is not affected by any tool of mechanization.
A. True
B. False
.
Answer: B
Q. Which of the following parts is used for cleaning the castings in a mechanized foundry?
A. Magnetic roller
B. Spherical roller
C. Scrubbing cylinder
D. Steel balls
.
Answer: C
Q. The method of scrubbing or cleaning cannot be used for excessively large castings in a mechanized foundry.
A. True
B. False
.
Answer: A
Q. In the mechanized foundry, the process of breaking gates may crack or damage the castings parts.
A. True
B. False
.
Q. Sand with high bond strength can lessen the amount of moisture in mould of a mechanized foundry.
A. True
B. False
.
Answer: A
Q. Mechanization can also manipulate the fundamental laws related to the production of castings.
A. True
B. False
.
Answer: B
Q. In the mechanized foundry, almost all the processes involved in production aims to achieve castings of better quality.
A. True
B. False
.
Answer: A
Q. Mechanization is not suitable for small type production due to consumption of excessive power by the processes involved in a mechanized foundry.
A. True
B. False
.
Answer: A
Q. What is the maximum pressure required to be given in a squeezing process?
A. 6.5 kg(f)/cm2
B. 7.5 kg(f)/cm2
C. 8.5 kg(f)/cm2
D. 9.5 kg(f)/cm2
.
Answer: B
Q. Which of the following is not a process of ramming?
A. Squeezing
B. Quenching
C. Jolting
D. Slinging
.
Answer: B
Q. Which machine is most useful for making shallow patterns?
A. Squeeze machine
B. Sand slinger
C. Jolt-squeeze machine
D. Jot-squeeze roll over
.
Answer: A
Q. Which of the following is not a power operated molding machine?
A. Squeeze machine
B. Sand slinger
C. Jolt-squeeze machine
D. Jot-sand machine
.
Answer: D
Q. At what pressure, does the compressed air enter in squeezing machine?
A. 6 kg(f)/cm2
B. 7 kg(f) /cm2
C. 8 kg(f) /cm2
D. 9 kg(f) /cm2
.
Answer: B
Q. Up to what depth of molds is a squeezing machine used?
A. 10 cm
B. 12 cm
C. 15 cm
D. 18 cm
.
Answer: C
Q. With an increase in the diameter of the piston, how does the molding force change?
A. Increases
B. Decreases
C. Does not change
D. Not related
.
Answer: A
Q. With a decrease in the length of the jolt stroke, how will the power of jointing be affected?
A. Increases
B. Decreases
C. No affect
D. Entities not related
.
Answer: B
Q. With an increase in the jolted area, how does it affect the jolted length?
A. Increases
B. Decreases
C. No change
D. Not related
.
Answer: B
Q. Hand molding is an inexpensive process.
A. True
B. False
.
Answer: A
Q. High amount of tapering allowance is required when molding machines are used.
A. True
B. False
.
Answer: B
Q. In core making operation, core sand without binder and moisture is used to increase hardness.
A. True
B. False
.
Answer: B
Q. Cores can be made within the mould by using moulding sand which is used for mould preparation.
A. True
B. False
.
Answer: B
Q. The permeability of core sand is generally kept higher as compared to that of moulding sand in core making operation.
A. True
B. False
.
Answer: A
Q. Better collapsibility of core sand in core making process can ease the cleaning of castings.
A. True
B. False
.
Answer: A
Q. Inorganic type of core binders is generally preferred as compared to organic core binders in core making procedure.
A. True
B. False
.
Answer: B
Q. Which of the following materials is used for imparting strength and collapsibility in core sand during core making process?
A. Molasses
B. Core oil
C. Sulphite binder
D. Thermo-setting resin
.
Answer: D
Q. Uniform and homogenous mixture of core sand can be achieved by manual operation.
A. True
B. False
.
Answer: B
Q. In core blowing machines, the filling of core sands in core boxes is done by using compressed air.
A. True
B. False
.
Answer: A
Q. In core sand preparation, roller mills are suitable for core sand that contains only a single binder called cereal binders.
A. True
B. False
.
Answer: A
Q. A low viscous fluid as lubricant is basically used for extraction of cores from the core boxes.
A. True
B. False
.
Answer: B
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Foundry Environment Health & Dust Problem in Foundries
Q. Above what noise levels should hearing protector be worn by a worker?
A. 80 dB
B. 85 dB
C. 90 dB
D. 95 dB
.
Answer: B
Q. Above what period of employment should a person wear a hearing protector?
A. 3 months
B. 6 months
C. 9 months
D. 12 months
.
Answer: B
Q. What is the shape of an ear canal seal?
A. Spherical
B. Cylindrical
C. Conical
D. Pyramidal
.
Answer: C
Q. Which of the following is not a source for entering phenols?
A. Steel scrap
B. Coke combustion product
C. Sand binder
D. Scrap iron
.
Answer: A
Q. Which material is used for destroying phenols?
A. Carbon tetrachloride
B. Carbon dioxide
C. Carbon monoxide
D. Chlorine dioxide
.
Answer: D
Q. What is the allowable time exposure for an air blow noise?
A. 2 hours
B. 3 hours
C. 4 hours
D. 5 hours
.
Answer: A
Q. What is the amount of noise produced in hand ramming with a hammer?
A. 90 dB
B. 95 dB
C. 100 dB
D. 105 dB
.
Answer: B
Q. What is the maximum amount of phenol concentration found in a foundry?
A. 3 ppm
B. 4 ppm
C. 5 ppm
D. 6 ppm
.
Answer: C
Q. Gloves used in foundries are made up of copper fabric.
A. True
B. False
.
Answer: B
Q. Cape sleeves cover the knee of the worker.
A. True
B. False
.
Answer: B
Q. In working at the foundry, the risk of getting injuries is inversely proportional to the frequency of exposure to the worker.
A. True
B. False
.
Answer: B
Q. Improper controlling of hazards in the foundry can lead to the occurrence of serious health problems to the workers.
A. True
B. False
.
Answer: A
Q. Which of the following hazards presence in the foundry is responsible for lung disease to the workers?
A. Noise
B. Metal splashes
C. Heat
D. Dust
.
Answer: D
Q. To control dust in the foundry during casting processes, it is dumped or mixed with water to reuse it for the preparation of mould.
A. True
B. False
.
Answer: A
Q. Which of the following processes is used for recycling of silica sand or dust in foundry during the casting process?
A. Radiography
B. UV method
C. Abrasive blasting process
D. Finn method
.
Answer: C
Q. In foundry during casting processes, carbon monoxide gas is produced only by the furnaces.
A. True
B. False
.
Answer: B
Q. Which of the following operations in the production of castings gives rise to excessive noise in the foundry?
A. Pouring
B. Shakeout
C. Coating
D. Melting
.
Answer: B
Q. Protective cloths are worn by the workers to resist the radiation of heat in the foundry.
A. True
B. False
.
Answer: A
Q. Casting of non-ferrous alloys by continuous casting method can cause an explosion if the casting contacts with water during processes.
A. True
B. False
.
Answer: A
Q. The study of ergonomics basically does not require as almost the entire foundry operations are performed by automation or mechanization.
A. True
B. False
.
Answer: B
Q. Which of the following equipment is used for determining the concentration of dust accurately?
A. Screener
B. Air Dryer
C. Jas Filter
D. Gravimetric sampler
.
Answer: D
Q. For determining the concentration of dust, continuous sampling is carried out by manual means.
A. True
B. False
.
Answer: B
Q. Which of the following sands can be used as a substitute for minimizing the dust particles in the foundry?
A. Core sand
B. Silica sand
C. Olivine sand
D. Quartz sand
.
Answer: C
Q. The biological monitoring of carbon monoxide is basically done by the blood sampling procedure.
A. True
B. False
.
Answer: A
Q. To examine health hazards and material damages in the foundry, the sampling site should be away from the source of pollution.
A. True
B. False
.
Answer: B
Q. Mechanization in the foundry can reduce the level of dust which may further reduce the cost of sampling.
A. True
B. False
.
Answer: A
Q. Which of the following processes is responsible for the emission of particulate matter in the foundry?
A. Moulding
B. Melting
C. Dressing
D. Shakeout
.
Answer: B
Q. To measure and control dust particulates in the foundry, dry dust technologies are mostly preferred than the wet dust technologies.
A. True
B. False
.
Answer: A
Q. In non-ferrous foundries, dust from the emission control equipment is considered as hazardous waste which cannot be recoverable.
A. True
B. False
.
Answer: B
Q. Respirable dust sampling is a method which uses a cyclone to separate and capture dust particles.
A. True
B. False
.
Answer: A
Q. Which of the following types of filtration system uses an eccentric rod assembly?
A. Reverse air cleaning
B. Jet cleaning
C. Shaker filtration system
D. Pulse cleaning
.
Answer: C
Q. Improper application of dust collecting equipment may lead to the occurrence of dust explosion.
A. True
B. False
.
Answer: A
Q. The chances of hazard increase with the increase in the size of combustible dust particles in the foundry.
A. True
B. False
.
Answer: B
Q. A thorough analysis of combustible dust should be followed even after collecting it by dust collecting equipment.
A. True
B. False
.
Answer: A
Q. Ventilation systems can only control the temperature but cannot be used for controlling dust particles in the foundry.
A. True
B. False
.
Answer: B
Q. Electrical equipment is also used along with the dust collecting equipment to control ignition of combustible dust particles in the foundry.
A. True
B. False
.
Answer: A
Q. In non-ferrous foundries, electrical equipment, heating system and dust collecting systems are generally kept in a single unit to optimize space.
A. True
B. False
.
Answer: B
Q. A fast acting valve is generally installed to isolate combustive hazards in the foundry.
A. True
B. False
.
Answer: A
Q. Which of the following devices is used for the removing of particulates from a gas by using water droplets?
A. Pulse cleaner
B. Air cleaner
C. Dry scrubber
D. Venturi scrubber
.
Answer: D
Q. In the dry gas scrubbing process, sodium bicarbonate material is used which completely absorbs the acidic gases and other dust particles.
A. True
B. False
.
Answer: B
