Saved Bookmarks
This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 95601. |
Which of the following process deals with mixing the molding sand elements?(a) Sand mixing(b) Sand preparation(c) Sand tempering(d) Sand conditioning |
|
Answer» Right choice is (b) Sand preparation The best explanation: In sand preparation, the process which is dealing with the basic preparation of mold sand is called as sand conditioning. The mixing of molding elements of sand is dealt by the process called sand preparation. |
|
| 95602. |
EKG stands for _________________(a) Electrocardiography(b) Electroencephalography(c) Electromyography(d) Electrtokinetcography |
|
Answer» The correct answer is (a) Electrocardiography For explanation: Electrocardiography (ECG or EKG) is the way toward recording the electrical action of the heart over some stretch of time utilizing anodes put on the skin. It could simply be understood as the electrical representation of heart beat. Electroencephalography is the electrical recording of brain. |
|
| 95603. |
How much distilled water is added to 3% NaOH solution in clay content determination of molding sand?(a) 450 cc(b) 475 cc(c) 500 cc(d) 550 cc |
|
Answer» Right option is (b) 475 cc The explanation: A strong base is used in the clay content determination, like sodium hydroxide. 475 cc of distilled water is added to 3% NaOH solution on the determination of clay content of molding sands. |
|
| 95604. |
Which of the following is a function of a core in casting?(a) Interior cavitational passages in a casting(b) To shape an external part of a more intricate casting(c) To strengthen and improve inner and outer surface of the mold(d) All of the mentioned |
|
Answer» Correct choice is (d) All of the mentioned The explanation is: A core has versatility of its functions, all the listed functions a core can perform. Moreover, a core has more functions as well. |
|
| 95605. |
Which of the following types of clay mineral includes potassium in the layer structure?(a) Chlorite(b) Vermiculite(c) Illite(d) Kaolinite |
|
Answer» Correct option is (c) Illite The explanation: Illite is a clay mineral which has potassium in the interlayer structure. The size and coordination number of potassium are like that it fits tightly in the hexagonal ring of oxygen of the tetrahedral sheets. This makes the structure a strong interlocking ionic bond which packs the individual layers together and restricts the water particles from immersing the interlayer site. |
|
| 95606. |
Which of the following is/are the advantage(s) of an Induction Furnace?(a) Higher yield(b) Cleaner melting(c) Compact Installation(d) All of the mentioned |
|
Answer» The correct option is (d) All of the mentioned For explanation I would say: Advantages offered by Induction Furnace are higher yield, faster startup, cleaner melting, natural stirring and compact installation. |
|
| 95607. |
In the green sand moulding of steel casting, what is the bentonite percentage composition?(a) 1.5%(b) 2.5%(c) 3.5%(d) 4.5% |
|
Answer» Correct choice is (c) 3.5% Explanation: In green sand mouldings of steel castings, the dextrin percentage is quite lower, it is around 0.5%. The bentonite percentage composition in green sand molding is calculated to be 3.5%. |
|
| 95608. |
In dry sand moulding of steel casting, what is the dextrine percentage composition?(a) 0.5%(b) 1.5%(c) 2.5%(d) 3.5% |
|
Answer» Correct option is (a) 0.5% Explanation: In dry sand mouldings of steel castings, the dextrine percentage composition is calculated to be 0.5%. In green sands, the dextrin content is also 0.5%, which is in green sand and in dry sand, the percentage of dextrine is same. |
|
| 95609. |
In an induction furnace, mixing and melting rates are altered by?(a) Controlling the temperature ranges only(b) Controlling the number of electrodes used only(c) Controlling power and frequency of current only(d) All of the mentioned factors |
|
Answer» Correct answer is (c) Controlling power and frequency of current only Best explanation: Due to the principle of induction used, the electromagnetic fields are produced. These EMF’s are used to stir the metal. Hence, controlling the power and frequency, Mixing and melting rates can be altered. |
|
| 95610. |
Which of the following metal has a melting point of about 1537^oC and latent heat of fusion 65.0 cal/g?(a) Nickel(b) Copper(c) Zinc(d) Iron |
|
Answer» Correct choice is (d) Iron To elaborate: Iron is the metal having a melting point of about 1537^oC and latent heat of fusion of 65.0 cal/g. It has a mean specific heat of 0.141 cal/g-^oC and heat required for melting 1 Kg of iron is 1168 kJ. |
|
| 95611. |
Runners, gates and risers are attached to the pattern to __________(a) Provide ease of cooling(b) Provide feed to the molten material(c) Provide design to the casting(d) Enhance the finishing of the casting |
|
Answer» Right option is (b) Provide feed to the molten material The explanation is: These external elements are added to the pattern or mould cavity to enhance the flow of molten metal, hence, to enhance the casting process. |
|
| 95612. |
Which of the following clay binders are most commonly used?(a) Bentonite(b) Illite(c) Limonite(d) Kaolinite |
|
Answer» The correct option is (a) Bentonite Best explanation: Bentonite is the most commonly used clay binder because of its ability to produce strong bonds inside the moulding sands. Bentonite is classified into 2 types, namely, Sodium montmorillonite and Calcium montmorillonite. |
|
| 95613. |
How can we enhance the feeding distance during casting?(a) Reducing molten metal temperature(b) Increase fluidity(c) By using low thermal conductivity mold(d) Using sand mold |
|
Answer» Correct option is (b) Increase fluidity The explanation: Feeding distance reduces by reducing molten metal temperature and using a low thermal conductive mold. For sand casting, feeding distance will be low because heat extracted by sand is very less compared to metals. By increasing fluidity, metal can flow over a long distance which results in higher feeding distance. |
|
| 95614. |
Incoming air pressure and quantity in cupola furnace are controlled by which of the following element?(a) Tuyeres(b) Tapping spout(c) Wind box(d) Blast pipe |
|
Answer» The correct option is (c) Wind box To explain I would say: The air enters the cupola through the tuyers. But the air blowers in the wind box controls the requisite pressure and quantity of air coming inside. |
|
| 95615. |
When do we need more number of risers during casting?(a) Feeding distance is low(b) Feeding distance is high(c) Thermal conductivity of mold is high(d) Fluidity of molten metal is high |
|
Answer» Right choice is (a) Feeding distance is low For explanation I would say: If feeding distance is high, number of the isolated zone in casting will be less thus less number of risers required. For high thermal conductivity, the metal will solidify faster and high fluidity molten metal will flow over a long distance which will result in less number of risers. If feeding distance is low, we have to use more risers to overcome isolated liquid pools. |
|
| 95616. |
Which sand is used for casting cast irons and non-ferrous metals?(a) Loam Sand(b) Natural Sand(c) Synthetic Sand(d) Refractory sand grain |
|
Answer» The correct option is (b) Natural Sand The explanation: For casting iron and non-ferrous metals, natural sand is used. The loam sand, the synthetic sand and the refractory grain sand do not play any role in casting them. |
|
| 95617. |
What is the amount of sea coal needed in cast irons for large green casting moulding sands?(a) 10%(b) 15%(c) 20%(d) 25% |
|
Answer» Right option is (a) 10% Explanation: Sea coal otherwise is used in small numbers for binding. Sea coal is used for surface appearance improvement. It is used about 10% in cast iron moulding sands for large green casting sands. |
|
| 95618. |
Which of the following can be used for increasing feeding distance?(a) Uniform temperature gradient(b) Negative temperature gradient towards the riser(c) No temperature gradient(d) Positive temperature gradient towards the riser |
|
Answer» The correct choice is (d) Positive temperature gradient towards the riser Explanation: If the temperature gradient is not there, the metal will not solidify. Same will happen in case of the uniform temperature gradient. In case of the negative thermal gradient, the metal will first solidify near riser which results in unsound casting. Hence positive thermal gradient is required so that metal will solidify near walls first hence feeding distance will be increased. |
|
| 95619. |
Which of the following relations is given by chvorinov for the solidification time of a casting?(a) ts = k(V/SA)^2(b) ts = k(V/SA)(c) ts = k(V*SA)^2(d) ts = k(V/SA)^3 |
|
Answer» The correct option is (a) ts = k(V/SA)^2 For explanation I would say: Chvorinov scientist has shown that the solidification time of a casting is directly proportional to the square of the ratio of volume-to-surface area of the casting and the constant of proportionality is known as mould constant. His relation is given by: ts = k(V/SA)^2, where ts = solidification time, V = volume, SA = surface area, k = mould constant. |
|
| 95620. |
With an increase in the initial volume, how does it affect the efficiency of the riser?(a) Increases(b) Decreases(c) Will not change(d) No relation |
|
Answer» Correct choice is (b) Decreases Easy explanation: The initial volume of the metal inside the riser and the efficiency of the riser are inversely linked with each other, that is, with an increase in the initial volume, there will be a decrease in the efficiency of the riser. |
|
| 95621. |
Up to what percent is the efficiency increased by using exothermic materials?(a) 65%(b) 70%(c) 755(d) 80% |
|
Answer» Correct answer is (b) 70% Best explanation: The use of exothermic materials causes to increase the efficiency by around 70%. The use of exothermic materials also causes the riser to be of only one-third its regular size. |
|
| 95622. |
Which of the following parts is used as exothermic materials or insulators for the increase in efficiency of the riser?(a) Chills(b) Feeding aids(c) Biscuit(d) Filler |
|
Answer» Correct choice is (b) Feeding aids Easy explanation: At the time of solidification, the shrinkages are produced in the castings which are eliminated by the use of a riser. The metal in riser should be in liquid form for a long period of time as to feed the casting till it solidifies. So feeding aids are used for this purpose, they can be either exothermic materials or insulators. |
|
| 95623. |
Which of the following metals comes in an exothermic group of metals when the solubility of hydrogen is concerned?(a) Iron(b) Titanium(c) Magnesium(d) Nickel |
|
Answer» Correct option is (b) Titanium To explain: When the solubility of hydrogen is concerned, titanium comes in an exothermic group of metals which absorb more hydrogen than endothermic metals (iron, magnesium, nickel etc). Further, in exothermic metals, the solubility of hydrogen decreases with temperature. The reverse is true for endothermic metals. |
|
| 95624. |
In a green sand moulding process, uniform ramming leads to _____(a) uniform flow of molten into the mould cavity(b) less chance of gas porosity(c) less sane expansion type of casting defect(d) greater dimensional stability of the casting |
|
Answer» Correct answer is (d) greater dimensional stability of the casting The explanation is: 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. |
|
| 95625. |
Which of the following gases is responsible for the Pin hole porosity in the molten metal?(a) Hydrogen(b) Nitrogen(c) Oxygen(d) Carbon-dioxide |
|
Answer» Right answer is (a) Hydrogen The explanation: This is caused by the dissociation of water inside the mould cavity. As the molten metal gets solidified, it loses temperature which decreases the solubility of gases by expelling the dissolved gases. The hydrogen while leaving the solidifying metal would cause long pin holes showing the path of escape. |
|
| 95626. |
Exothermic material does not contain which of the following metal oxide?(a) Cobalt(b) Copper(c) Iron(d) Magnesium |
|
Answer» The correct answer is (d) Magnesium Best explanation: Exothermic materials are those which generate a lot of heat because of exothermic chemical reactions. Exothermic materials do not include oxides of magnesium. |
|
| 95627. |
Which of the following is the best method for the uniform ramming of moulding sand?(a) Jolting(b) Squeezing(c) Sand slinging(d) Hand moulding |
|
Answer» Right choice is (c) Sand slinging Easiest explanation: Sand slinging is defined as the combination of jolt and squeeze method of ramming, in which jolt-squeeze machines are used for the more uniform ramming. This is the method which is widely used in the ramming process, but the processes are expensive due to the application of various machines. |
|
| 95628. |
Sprue design is made tapered instead of straight ___________(a) To easy flow of molten metal(b) To have smoothness in the metal flow(c) To maintain the pressure balance(d) To avoid the erosion of mould sand |
|
Answer» The correct option is (c) To maintain the pressure balance The explanation: Pressure balance is maintained, to avoid the negative pressure (to ensure positive pressure anywhere in the liquid column), the sprue should be tapered. The ideal shape of the sprue is parabola but to reduce the manufacturing difficulty shape of the sprue is considered as tapered cylinder. |
|
| 95629. |
Statement: It is desirable to put the child in school at the age of 5 or so. Assumptions: I. At that age the child reaches appropriate level of development and is ready to learn. II. The schools do not admit children after six years of age.A. If only assumption I is implicitB. If only assumption II is implicitC. If either I or II is implicitD. If neither I nor II is implicit |
|
Answer» Correct Answer - A Since the statement talks of putting the child in school at the age of 5, it means that the child is mentally prepared for the same at this age. So, I is implicit. But nothing about admission after 6 years of age is mentioned in the statement. So, II is not implicit. |
|
| 95630. |
For the functioning of the gating system, which of the following factors need not be controlled?(a) Type of sprue(b) Size of runner(c) Temperature of molten metal(d) Type of riser |
|
Answer» Right answer is (d) Type of riser To explain I would say: For the most proper functioning of the gating system, all the above factors should be taken into considerations, but not the type of riser. |
|
| 95631. |
The primary purpose of sprue in casting mould is to _____(a) act as a reservoir for molten metal(b) feed the casting at rate consistent with the rate of solidification(c) feed molten metal from the pouring basin to the gate(d) help feed the casting until all solidification takes place |
|
Answer» The correct option is (c) feed molten metal from the pouring basin to the gate The explanation: Sprue is a connecting passage between pouring basin and runner for molten metal in the tapered form to avoid the aspiration effect so that pressure equally maintained in the column of liquid metal streaming to the mould. |
|
| 95632. |
Ruling governments in the west are being punished by the voters for every rising unemployment rates. Their parliament is abuzz with campaings, marked by criticism oflndia as an outsourdng hub. India is seen by many in the west as a land of call centres and back office with cheap labour that cost people in the west, their jobs. Which of the following can be a possible repercussion of the opposition to outsourcing in the west ?A. Jobs which are currently outsourced to India would be transferred to another country which in all probability would be China.B. Call centres and back offices employees in India would expect a salary at par with their western counterparts.C. In-sourcing of jobs by the west would render thousands oflndians unemployed.D. If in-sourced in the west itself, the companies would not be able to employ professionals and experts of same quality as available in India. |
|
Answer» Correct Answer - C Outsourcing from the West would sender thousands of Indians unemployed. |
|
| 95633. |
Ruling governments in the west are being punished by the voters for every rising unemployment rates. Their parliament is abuzz with campaings, marked by criticism oflndia as an outsourdng hub. India is seen by many in the west as a land of call centres and back office with cheap labour that cost people in the west, their jobs. Which of the following.can be inferred? (An infernece is something which is not directly stated but can be inferred from the given facts)A. Unemployment in India is not as severe a problem as that in the westB. Employees working in the back offices and call centres in the west earn much more than their counterpa11s in IndiaC. Developing countries such as China and India do not outsource their back office jobs at all to other countriesD. Countries which do not outsource jobs do not face the problem ofunemployment |
|
Answer» Correct Answer - C Statement (c) can be easily inferred from the facts given is passage. |
|
| 95634. |
Ruling governments in the west are being punished by the voters for every rising unemployment rates. Their parliament is abuzz with campaings, marked by criticism oflndia as an outsourdng hub. India is seen by many in the west as a land of call centres and back office with cheap labour that cost people in the west, their jobs. Which of the following statements would weaken the argument given in the passage ?A. Outsourced jobs do not require highly skilled and qualified employees.B. Nearly 34% of the unemployed people would secure jobs in the west if outsourced jobs were in sourced by their. organisationsC. After suffering heavy losses in the elections the governments in the west are expected to change their decision on outsourcing to India.D. Although outsourcing to India allowed many companies in west to focus on their core operations, they heavily compromised the quality and the standards of their back office jobs. |
| Answer» Statement (e) weakens the argument in the passage because heavy compromise on quality and standards of their back office jobs. contradicts the argument. | |
| 95635. |
Four Management Institutes have decided to conduct a Common Admission Test for selecting suitable candidates for the new session. Which of the following can be the probable cause for this decision?A. Only(A) and (B)B. Only(B) and(C)C. Only(C)D. Only(A) and (C) |
|
Answer» Correct Answer - A Clearly statement (A) and (B) can be the probable cause of the decision because common admission test is the most suitable method- for selection process. |
|
| 95636. |
Four Management Institutes have decided to conduct a Common Admission Test for selecting suitable candidates for the new session. Which of the following can be possible consequence(s) of this decision ? (A) The aspirants would take only one test in a year. (B) The Common Admission Test would save the application fee. (C) Now the aspirants will have only one attempt to prove themselves. (D) Only the top most Institute will receive more number of applications if aspirants fill up different forms. (E) A large number of aspirants would be selected as there are more Institutes to accommodate them. (F) It is not possible to allot Iristitutes to the selected candidates as per their preferences.A. Only(B),(C)and(F)B. Only(A),(C)and(F)C. Only(F), (B) and(E)D. Only(C), (E) and(F) |
|
Answer» Correct Answer - C Statement (B), (E) and (F) are the possible consequences because common admission test would save the money and time of the aspirants. Illstitutes have to consider multiple factors for allotment of seats so statement (F) is also correct. |
|
| 95637. |
The _____ is located below the Title bar. It has commands like File , Edit, etc. Clicking on each menu option displays a list of commands. a) Standard bar b) Menu bar c) Formatting bar d) Formula bar |
|
Answer» Correct option: b) Menu bar |
|
| 95638. |
Statement: Satisfaction with co-workers, promotion oppor- tunities, the nature of work, and pay goes with high performance among those with strong growth needs. Among those with weak growth needs, no such relationship is present and, in fact, satisfaction with promotion opportunities goes with low performance. The statement best support the premise thatA. Satisfaction is an inevitable organisational variableB. Job satisfaction and performance are directly and closely relatedC. Relationship between job satisfaction and performance is moderated by growth needD. Every organisation has few employees having weak growth need |
|
Answer» Correct Answer - C Statement III best support the premise because job satisfaction and performance of an individual are directly related with growth. |
|
| 95639. |
What is the purpose of strainer in the gating system?(a) To make uniform flow(b) To make smooth surface finish of the casting(c) To remove dross from the molten metal(d) To create positive pressure throughout to avoid aspiration effect |
|
Answer» Right answer is (c) To remove dross from the molten metal The explanation: Ceramic strainer in the sprue removes dross and prevent slag from entering to the castings. Strainer additionally useful to laminize the flow. A typical strainer might be a cylinder of 30-50 mm diameter, 10-20 mm long, containing ten or more holes, of diameter approximately 3-5 mm. |
|
| 95640. |
Select a short step for opening a workbook a) Ctrl+A b) Ctrl+N c) Ctrl+O d) Ctrl+S |
|
Answer» Correct option: c) Ctrl+O |
|
| 95641. |
Positive-displacement compressors work by forcing air into a chamber whose volume is ______to compress the air. a) Incresed b) decreased c) Remains same d) Does not affect |
|
Answer» Correct option: b) decreased |
|
| 95642. |
If a person reads a lot, he will increase his vocabulary. If a person reads a lot, he will increase his vocabulary. A. Strong vocabulary is important for writing and speaking. B. People should read books containing unfamiliar words. C. The books to be read should be entertaining.A. A onlyB. B onlyC. C onlyD. A, B and C |
|
Answer» Correct Answer - A In the light of the passage only assumption A is implicit. Hence option (a) is the correct option. |
|
| 95643. |
Casting yield of a non-pressurized gating system is _____(a) very high(b) 80%(c) very less(d) 50% |
|
Answer» Right option is (c) very less To explain: Tapered sprues are invariably used with an unpressurized system. Casting yield of a non-pressurized gating system gets reduced because of the large metal involved in the runner and gates. This makes the wastage of material, to avoid this, a pressurized gating system is used. |
|
| 95644. |
An _______is a machine that converts power using an electric motor, diesel or gasoline engine, etc. into potential energy stored in pressurized air a) air compressor b) Turbine c) Engine d) Locomotive |
|
Answer» Correct option: a) air compressor |
|
| 95645. |
Mobile technology has played great role in growth and development of society. Earlier cellphone was used as a medium of conversation only. Now mobile phones also support a wide variety of other services, such as, texting, email, internet access etc. The price of mobile phones is also decreasing and people are being encouraged to buy a mobile phone set at a cheaper rate. The mobile technology and smartphones have the capabilities of handling video calls, sharing large files. Mobile technology had made it more efficient to conduct business. Video calls and taking photographs have become possible as mobile phone has in built camera. Therefore, there is no need to carry around a camera everywhere you go, Which of the following can be concluded from the given information?A. Buying a phone with a camera is more convenient than buying. two different devices.B. Mobile phones that are basic last longer than the ones with added featuresC. Not many people are interested in clicking pictures with mobile phonesD. It is possible to share pictures with someone having a similar camera |
|
Answer» Correct Answer - A Obviously option (a) is correct. |
|
| 95646. |
A _______ is a machine that converts power into potential energy stored in pressurized air. |
|
Answer» A Air compressor is a machine that converts power into potential energy stored in pressurized air. |
|
| 95647. |
Enlist the any four parts of speech. |
|
Answer» Parts of speech are as follows: a. Verb b. Noun c. Adverb d. Adjective e. Pronoun f. Preposition g. Conjunction h. Interjection |
|
| 95648. |
Televison is no longer the medium of entertainment at persent . Moblie has taken the place of it among the youngster as they used to spend most of their time on it. Which of the following can be hypothesized from the give statements?A. Television is still most popular among kids.B. People love to play games at mobile phone instead of involving in outdoor activites.C. Mobiles has become the addication for the younger generation.D. The older generation is not comfortable is using mobile phone. |
|
Answer» Correct Answer - C Only option (c) This can be hypothesized from the given statement as it is mentioned in the given statement that youngsters spend most of their time on mobile phones. |
|
| 95649. |
Mechanic of the vehicle must go through____ manual. |
|
Answer» Mechanic of the vehicle must go through Service manual manual. |
|
| 95650. |
Name two content of service manual? |
|
Answer» The two content of service manual are : (i) Serviceability (ii) Working test procedure |
|