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This section includes 7 InterviewSolutions, each offering curated multiple-choice questions to sharpen your Current Affairs knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Is service manual helpful in servicing of vehicle. Explain. |
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Answer» Yes The technician/mechanic must use the service manual regularly to check the serviceability of component. This helps the technician to decide about replacement of component. The modern automobile requires attention to maintain its working while assembly. Reading helps in maintaining the tolerances, play for smooth working of components or assembly. |
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| 2. |
Briefly explain the disadvantages of not getting the vehicle servicing on correct interval. |
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Answer» 1. Car's manufacturer ensures warranty if the owner stick to its recommended maintenance. If the owner, doesn’t have it serviced accordingly, the warranty will be voided. 2. In case of damage to the engine, this could lead to high costs which will not be reimbursed by the manufacturer. 3. If someone not getting the vehicle servicing on correct interval he/she is compromising to the car’s safety. 4. It can cause premature wear and damage to the car |
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| 3. |
Works manager Gita is giving training to new mechanic about vehicle servicing, she instructed to all mechanic that, Air filter must be cleaned by a) Chemical b) Air Blower c) Oil d) Water |
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Answer» Correct answer is b) Air Blower |
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| 4. |
Explain in brief techniques of driving a) At night b) In slippery Condition |
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Answer» a) At night 1) Aim your headlights correctly, and make sure they're clean 2) Dim your dashboard 3) Clean the windshield to eliminate streaks 4) Slow down to compensate for limited visibility and reduced stopping time 5) Minimize distractions, like talking with passengers or listening to the radio, etc. b) In slippery Condition 1) Slow down the vehicle as it takes longer to stop or adjust in wet weather. 2) Stay toward the middle lanes - water tends to pool in the outside lanes 3) Be more alert when driving in wet or slippery conditions. Watch out for brake lights in front of you. 4) Avoid using your brakes; if possible, take your foot off the accelerator to slow down |
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| 5. |
While studying the "service manual‟ which point should be read carefully? a. Specific Warning b. Specific tools and gauges c. All instructions d. All of above. |
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Answer» Correct option: d. All of above. |
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| 6. |
What knowledge, service manual gives to the technicians? |
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Answer» Service manual gives the following knowledge to the vehicle owner 1) Expanded view of assembly 2) Disassembly sequence 3) Tolerances, gazes, sizes of components 4) Serviceability 5) Life span of various components and its replacement schedule. 6) Decision for Repair or Replacement 7) Assembly procedure and 8) Working test procedure |
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| 7. |
Statement : Unemployment allowance should be given to all umemployed Indian youth above 18 years of age. Assumptions: I. There are unemployed youth in India who needs monetray support. II. The government has sufficient funds to provide allowance to all unemployed youth.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 |
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Answer» Correct Answer - A I directly follows from the statement and so is implicit. Also, the statement is a suggestion and does not tell about a government policr or its position of funds. So, II is not implicit. |
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| 8. |
Write any four types of Green Jobs available in today’s time |
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Answer» Urban growers, Clean Car Engineers, Bio fuel Jobs, Building roads with plastic wastes, Solar Cell Technicians, Solar Panel Installers, Wave Energy producers, Water Quality Technicians, Recyclers, etc. |
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| 9. |
Explain any two stress management techniques. |
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Answer» a. Physical Exercise: When stress affects the brain, rest of the body also feels the impact. Physical exercise in the form of walking, skipping or for that matter indulging in any sports has been found to relieve stress as they stabilize mood, improve self-esteem and induce sleep. b. Yoga: Yoga is a school of Hindu philosophy that reduces stress. Yoga includes a series of postures and breathing exercises practiced to achieve control of body and mind. |
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| 10. |
Enlist any four parts of speech. |
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Answer» Parts of speech are as follows- a. Verb b. Noun c. Adverb d. Adjective e. Pronoun f. Preposition g. Conjunction h. Interjection |
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| 11. |
Enlist parts of a speech. |
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Answer» Eight parts of speech are: Noun, pronoun, verb, adjective, adverb, preposition, conjunction and interjection. |
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| 12. |
Enlist green jobs available in your area. |
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Answer» a) Urban Growers b) Clean Car Engineers |
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| 13. |
(A) A smaller brand, manufacturing a certain product of quality compareble with that of a bigger brand makes much more profit from the local grocery stores than from the supermarkets. (B) As the supermarkets have been set up only in bigger cities at present, this step would fail to deliver result in the smaller cities. (C) Supermarkets helps the smaller brands to breaks into newer markets without investing substantially in distribution. (D) Supermarkets charges the smaller brands 10% higher than the amount charged to the bigger brands. (E) Being outnumbered by the bigger brands, visibility of the smaller brands at local grocery stores is much lower as compared to the supermarkets. (F) Smaller brands are currently making substantial losses in their businesses.A. Only (A)B. Only (C)C. Only (E)D. Only(F) |
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Answer» Correct Answer - A Statement (A) will prove that step taken by the smaller brands may not necessarily by correct. |
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| 14. |
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 cannot be inferred from the given information? (An inference is something that is not directly stated but can be inferred from the given information)A. One can share photos and videos via mobile phones provided that the other person has a similar device.B. Many features are being added to mobile phones now- a-daysC. The other features of mobile phones are used as useful as the built in cameraD. Technological advances are taking place in fields other than cellphones as well. |
| Answer» From the given information we cannot infer option (e) | |
| 15. |
Which of the following gating systems is useful for casting drossy alloys?(a) Pressurized gating system(b) Partially pressurized gating system(c) High pressurized gating system(d) Non-pressurized gating system |
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Answer» Correct answer is (d) Non-pressurized gating system Explanation: Non-pressurized gating system has choke at the bottom of the sprue base, have total runner area and in-gate areas higher than the sprue area. In this system, there is no pressure existing in the metal flow system and thus it helps to reduce turbulence. Hence this system can be used for casting drossy alloys such as aluminum and magnesium alloys. |
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| 16. |
In case of dynamic balancing test wheel is rotating at----- rpm, and then measuring the forces of imbalance as the type roates.a) 50 b) 100 c) 200 d) 300 rpm or higher |
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Answer» Correct option: d) 300 rpm or higher |
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| 17. |
If a person reads a lot, he will increase his vocabulary. Which one of the following would weaken.the argument?A. Educated people can express their thoughts better.B. The style of a person is coloured by the style of the author he reads.C. Only a well read person can make proper use of the English language.D. Those who passed vocabulary tests could not write well. |
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Answer» Correct Answer - D Asswnption (d) weakens the argwnent. |
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| 18. |
Which of the following factors is used to define the casting type in riser design?(a) Plating factor(b) Ranginess factor(c) Caine factor(d) Pseudo factor |
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Answer» Correct choice is (b) Ranginess factor To explain I would say: For the chunky type castings like a cube, the volume component can be neglected, but for the rangy castings, like as plate-like casting, the influence of the volume part becomes increasingly significant. So, it is very useful to have a parameter called ranginess factor (R), to define the casting type. |
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| 19. |
The development in technology and point of sale systems has streamlined ______to a great extent. a) Performing Inventory b) Maintaining Registers c) Restocking of Goods d) Displaying of Goods |
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Answer» Correct option: b. Maintaining Registers |
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| 20. |
Why are flux added to the charge ( parent metal to be melted) during melting of a metal?(a) To increase carbon content(b) To increase refractoriness(c) To add specific oxides(d) To remove specific oxides |
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Answer» The correct answer is (d) To remove specific oxides Easy explanation: The flux is a chemical substance, added to the metal while melting it to remove oxides present in the metal. |
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| 21. |
Which of the following gating designs is used to avoid the splashing of the molten metal in the mould?(a) Vertical gating(b) Horizontal gating(c) Inclined gating(d) Bottom gating |
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Answer» The correct option is (d) Bottom gating To elaborate: In the case of bottom gating design the liquid metal is filled in the mould from bottom to top, thus it avoids the splashing of the molten metal in the mould that can cause erosion. And this design also prevents the oxidation which is associated with the vertical gating. |
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| 22. |
Gating design for a mould of 50cm*25cm*15cm is shown in below figure. The cross-sectional area of the gate is 5 cm^2. Neglecting friction and velocity distribution effects, what is the filling time (t) for the design (in second)?(a) 19.25(b) 21.86(c) 34.21(d) 10.39 |
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Answer» Correct choice is (b) 21.86 Easy explanation: H (Total height) = 15 cm, from the figure. v (Velocity of molten metal) = √2gH = √2*981*15 cm/sec = 171.6 cm/sec. V (Volume of the mould) = 50*25*15 cm³ and A (Cross-sectional area of the gate) = 5 cm^2. As we know, t = V/Av So, t (Filling time) = 50*25*15/5*171.6 sec = 21.86 sec. |
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| 23. |
Which, among the following, will be unity in free space?(a) Absolute permittivity(b) Relative permittivity(c) Actual permittivity(d) Both absolute and relative permittivity |
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Answer» The correct answer is (b) Relative permittivity To explain I would say: Relative permittivity is constant for a particular medium. For air or free space, it is unity. Absolute permittivity does not depend on the medium, its value is always constant=8.85*10^-12F/m. Actual permittivity is the product of relative permittivity and absolute permittivity. |
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| 24. |
Which of the following parts is used in jolt moulding to ram the sand in mould?(a) Biscuit(b) Jolt(c) Roller(d) Overhead hopper |
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Answer» The correct answer is (d) Overhead hopper For explanation I would say: Basically, an overhead hopper is used in jolt mould method of ramming, in which after filling the sufficient amount of sand to the mould, an overhead hopper is raised to a certain height and then it is allowed to free fall on to a solid bed plate, which results into the ramming and packing of sand layers in the mould. |
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| 25. |
What percent of magnesium is used in mold metal reactions?(a) More than 1%(b) More than 2%(c) More than 3%(d) More than 4% |
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Answer» Right option is (a) More than 1% For explanation I would say: In the mold metal reactions, there is extremely less amount of magnesium used. Approximately more than 1% of magnesium is used in the reactions containing light alloys. |
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| 26. |
Calculate the current A.(a) 5A(b) 10A(c) 15A(d) 20A |
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Answer» The correct answer is (c) 15A The best explanation: KCl states that the total current leaving the junction is equal to the current entering it. In this case, the current entering the junction is 5A+10A=15A. |
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| 27. |
What is the condition for mold metal reaction to take place?(a) Radiating contact between gas and metal(b) Direct contact between gas and metal(c) Radiating contact between gas and oxide film(d) Direct contact between gas and oxide film |
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Answer» Correct answer is (b) Direct contact between gas and metal The explanation: For mold – metal reaction to take place, the condition is that there has to be direct contact between the gas and the metal. |
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| 28. |
Which test is performed for the study of grain size distribution of moulding sand?(a) Screening test(b) Whirl test(c) Crushing test(d) Shearing test |
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Answer» Correct option is (a) Screening test Easiest explanation: Screening test is performed by taking a fixed sample weight of sand and screening it through standard sieves. It is accomplished by shaking the sieves. The amount of sand that collects in the different sieves is then plotted, and then a distribution of grain size is computed. |
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| 29. |
Statement : 'In order to bring punctuality in our office, we must provide conveyance allowace to our employees.' In charge of a company tells Personnel Manager. Assumptions: I. Conveyance allowance will not help in bringing punctually. II. Discipline and reward should always go hand in hand.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 |
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Answer» Correct Answer - B Assumption I goes against the statement. So, it is not implicit. The allowance will serve as a -reward to the employees and shall provoke them to come on time. So, II is implicit. |
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| 30. |
Which refractory sand has the best moulding material?(a) Silica sand(b) Magnesite(c) Zircon(d) Olivine |
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Answer» The correct answer is (a) Silica sand Explanation: Silica sands are considered to be having the best moulding material. It has its occurrence in a variety of crystalline modifications. |
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| 31. |
Which of the following is not refractory sand?(a) Olivine(b) Silica Sand(c) Dolomite(d) Barium Chloride |
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Answer» Correct option is (d) Barium Chloride To explain I would say: Among the following, Barium Chloride is not refractory sand, as it is counted under foundry fluxes, whereas all remaining sands are refractory sands. |
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| 32. |
Which of the following materials can have the negative volumetric shrinkage of the casting?(a) Aluminium(b) Steel(c) Zinc(d) Grey cast iron |
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Answer» The correct option is (d) Grey cast iron Easiest explanation: Different materials have different volumetric shrinkage, in which grey cast iron is the material which sometimes may have a negative shrinkage. This mainly occurs because of high carbon and silicon contents in the grey cast iron, which results in occurring of graphitization which increases the volume. |
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| 33. |
How much is the floor sand in a typical dry sand molding mixture?(a) 30%(b) 35%(c) 40%(d) 45% |
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Answer» The correct answer is (c) 40% Best explanation: In a typical dry sand molding mixture, the total content of floor sand is approximately about 40%, for making non-ferrous castings. |
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| 34. |
What is the chemical formula of silica?(a) SiO(b) SiO2(c) SiO3(d) SiO4 |
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Answer» The correct option is (b) SiO2 Explanation: None. |
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| 35. |
Calculate the power in the 20 ohm resistance.(a) 2000kW(b) 2kW(c) 200kW(d) 2W |
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Answer» Right choice is (b) 2kW The best I can explain: Here V = 200v and Resistance( R) = 20ohm. P=V^2/R= 200^2/20=2000W=2kW. |
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| 36. |
What is the general shape of an open riser?(a) Cubical(b) Trapezoidal(c) Cylindrical(d) Rounded |
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Answer» Right choice is (c) Cylindrical Explanation: The shape of an open riser is generally cylindrical. The top of the cylinder is open, causing the molten metal direct exposure to the atmosphere. |
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| 37. |
With what does iron react to give out Ferrous Oxide?(a) Carbon dioxide(b) Nitrogen(c) Ozone(d) Oxygen |
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Answer» Right choice is (d) Oxygen Explanation: Iron when reacts with Oxygen gas, it produces the compound, ferrous oxide. Ferrous oxide is an inorganic compound and possesses black colored appearance. |
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| 38. |
Which of the following is not a type of a gate?(a) Top gate(b) Bottom gate(c) Parting gate(d) Middle gate |
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Answer» Right answer is (d) Middle gate Easy explanation: Among the given types, middle gate is not a type of gate. Gates are classified into top, bottom and side gate only. |
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| 39. |
How many moles of iron oxide are needed to react with 8 moles of aluminium to form 4 moles of aluminium oxide?(a) 2(b) 8(c) 4(d) 6 |
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Answer» The correct option is (c) 4 The explanation is: According to the exothermic reaction, when 4 moles of iron oxide would react with 8 moles of aluminium, 4 moles of aluminium oxide and 8 moles of iron atoms will be formed. |
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| 40. |
With an increase in the volume of castings, how would it affect the freezing time?(a) Increase(b) Decrease(c) Will not change(d) No relation |
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Answer» Correct choice is (a) Increase The explanation is: According to Chvorinov’s rule, freezing time is directly proportional to the square of the volume. Therefore, an increase in the volume of the casts will cause a lot of increase in the freezing time. |
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| 41. |
Iron oxide reacts with which metal to give aluminium oxide?(a) Iron(b) Aluminium(c) Copper(d) Zinc |
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Answer» Correct choice is (b) Aluminium The explanation: When iron oxide reacts with aluminium, aluminium oxide and free iron atoms are formed, and a lot of energy in the form of heat is released. |
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| 42. |
For ferrous alloys, the breaking of mould should be done at a temperature_____(a) 780 ⁰C(b) 850 ⁰C(c) above 700 ⁰C(d) below 700 ⁰C |
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Answer» Correct answer is (d) below 700 ⁰C Explanation: Ideally, the moulds should be broken at a temperature when no transformation occurs. For ferrous alloys, the breaking should be done at a temperature below 700 ⁰C. If the castings are fragile and thin, they should be removed at a temperature as low as 400 ⁰C to avoid any deformation to the metal castings at the time of breaking of mould. |
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| 43. |
Which of the followings is the formula for calculating the choke area (A)?(a) 2W/dtC√2gh(b) W/dtC√2gh(c) W²/dtC√2gh(d) 2W³/dtC√2gh |
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Answer» The correct option is (b) W/dtC√2gh Easiest explanation: Choke area (A) = W/dtC√2gh, It is the main control area which meters the metal flow into the mould cavity so that the mould is completely filled within the calculated pouring time. Its unit is mm². Where, W = Casting mass (kg), t = pouring time (second), d = mass density (kg/mm³), h = Sprue height (mm), g = Acceleration due to gravity (mm/s²), C = Efficiency factor. |
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| 44. |
What is the chemical formula of fayalite?(a) FeO2SiO2(b) FeOSiO2(c) FeO3SiO2(d) FeO2SiO3 |
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Answer» Right answer is (b) FeOSiO2 The explanation is: The chemical representation of the compound fayalite is given by FeOSiO2. Fayalite is also known by the name, iron chrysolite. |
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| 45. |
Calculate the equivalent resistance between A and B.(a) 2 ohm(b) 4 ohm(c) 6 ohm(d) 8 ohm |
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Answer» Right answer is (b) 4 ohm The best explanation: R=((2+3)||5)+1.5)||4. The 2 and the 3 ohm resistor are in series. The equivalent of these two resistors is in parallel with the 5 ohm resistor. The equivalent of these three resistances is in series with the 1.5 ohm resistor. Finally, the equivalent of these resistances is in parallel with the 4 ohm resistor. |
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| 46. |
Find the value of the currents I1 and I2.(a) 0.3, 0.1(b) -0.1, -0.3(c) -0.3, -0.1(d) 0.1, 0.2 |
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Answer» Correct choice is (d) 0.1, 0.2 To explain: Using KVL in loop 1, 10-100 i1=0. i1=0.1A Using KVL in outer loop, -100i2+20=0 i2=0.2A. |
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| 47. |
Which of the following equipment can be used for determining the grain size of soil particles?(a) Sprue(b) Gate(c) Runner(d) Sieve |
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Answer» The correct option is (d) Sieve For explanation I would say: Analysis of grain size of soils particles containing mostly large size particles is completed by using sieves. It is a device which normally consists of openings of same size and shape through which grains or particles of soil passes which should be smaller in size as compared to the size of openings, and the very large particles retained on the sieve. |
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| 48. |
Which of the following is not a core sand property?(a) Dry strength(b) Hardness(c) Low collapsibility(d) Good Permeability |
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Answer» Right answer is (c) Low collapsibility The best explanation: Dry strength, hardness and a good amount of permeability are a few properties of core sand. Low collapsibility is not any of the property of core sands, in fact, core sands are supposed to have high collapsibility. |
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| 49. |
For bonding action of clays, what is the amount of water needed?(a) 1.5%-8%(b) 3.5%-11%(c) 4.5%-12%(d) 5.5%-13% |
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Answer» Correct option is (a) 1.5%-8% Easiest explanation: For the bonding action of the clays, water is needed, which activates the sand and clay-sand mixture. The amount needed for this is 1.5% to 8%. |
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| 50. |
In green sand moulding of steel casting, what is the moisture percentage composition?(a) 2-3%(b) 3-4%(c) 4-5%(d) 5-6% |
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Answer» The correct answer is (d) 5-6% To explain: In dry sand mouldings of steel castings, the moisture percentage composition is calculated to be 5-6%. In green sands, the moisture content is relatively lower than dry sands. It is around 3% to 4%. |
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