16. Such areas are termed dead zones. Answer: b Flashback is generally caused by improper mixing of gases, which further increases the rate of flame propagation to high extent that the flame goes back to the mixing chamber. In facing, workpiece is rotated against the single point cutting tool. If a robot can alter its own trajectory in response to external conditions, it is considered to be c) 60 m/sec b) False Which of the following synthetic resins are used for mixing with sand in shell moulding? a) cross feed The zero point may be defined at any suitable point within the limits of the machine tool table and can be redefined from time to time. d) Tandem rolling mill What is the magnitude of temperature produced in a thermit reaction? Answer: a a) Increases Explanation: Among the following, plasma arc, electro-slag and submerged arc are few of the types of arc welding. What is the cross-sectional shape of a thermoplastic welding rod? a) Air roller c) Tungsten 21. 21. a) Door insulation seals Over-curing or under-curing of the shell mould, leads to the generation of sophisticated problems in the shell mould. The moulding directions in injection moulding can affect the cost of equipments used in the process. c) 12 mm Also, there is a main disadvantage in the cold chamber die casting process is the longer cycle time needed as compared to the hot chamber die casting process. 42. What is the minimum pressure required in a transfer molding process? Answer: a b) toughness of the resin b) Air-lift hammer c) 946 kg/m3 Answer: b Answer: b The following type of robot is most suitable for pick and place operations Answer: b a) electric 39. 8. MS Word MCQ Questions and Answers based on the computer basics. Answer: d c) Dowel pins Feed is measured in units of _____ b) False Explanation: Skeleton pattern uses the least amount of material for the operations on pattern and therefore, it does not need a lot of investment on its materials, making it inexpensive. Answer: d a) True 38. Traversing of tool parallel to the axis of job is termed as_____ In how many ways CNC machine tool systems can be classified? In shell moulding sand preparation, the resin is combined with a catalyst (hexa) to develop the_____ b) Pattern The wire is cooled and then it is wound to large spools at a speed of 50 meters per second. So for maintaining proper die temperature, water cooling channels are used near the castings through the cover and ejector die. a) Silica sand Explanation: In gas welding, a flashback is a condition in which the flame burns inside the gas torch. 19. c) Open die forging a) True Answer: a Which of the following devices is used for the mixing or complete formation of the shell sand mixture? b) False b) Electro-slag b) False b) Gated pattern a) True c) expert system processor Lathe is a versatile machine tool. a) Lead stearate When the continuous passing of Co2 is done for long time, this may results into sticking of pattern with the mould which cannot be removed easily, so proper care should be taken while passing of Co2 gas. Which of the following represents the approximate percentage of metal loss during the blanking operation? b) False Explanation: None. Answer: b c) one after the other b) curve a) 0.58 mm In this method, the metal is extruded back into the plunger. 16. Identification of a problem B. Which type of surface is produced by turning operation in lathe machine? Indirect extrusion needs a large amount of force for functioning. b) False In hot rolling process, velocity of material at exit is lowest. b) False d) Two high anti mill Which of the following types of fuel gas is commonly used in gas welding? b) Copper Which of the following pattern operation is cheapest? c) Helmets c) Aluminium Acetylene is a hydrocarbon which molecule is made up of two carbon atoms and four hydrogen atoms. c) speed lathe c) Size of the casting c) square b) Decreases c) lathe Answer: a c) Production of the pattern requires extra effort to cast the object Water potential is equal to (a) T s + O.P (b) = T.P. Answer: b c) Match plate pattern Explanation: In Co2 moulding, poor collapsibility of the mould is a major disadvantage. Answer: c Electron-beam is a type of newer welding and oxy-hydrogen welding is a form of gas welding. Explanation: The fixed-sequence robot, also called a pick-and-place robot, is programmed for a specific sequence of operations. 15. This is new Multiple Choice Questions (MCQ Questions) with Answer on the Category of Database Management System (DBMS). Answer: b Explanation: There is a force perpendicular to the arc which is in contact when the rolls are pressurizing the material. 12. b) coaxial cable a) Clockwise-anticlockwise 41. b) Contact with chilled surface a) High relative velocity b) Water cooling system 26. d) 135°C Explanation: In die casting, as the metal is forced in under pressure compared to the permanent mould casting, it is also known as pressure die casting. b) Drop forging b) 1 MPa Where, SiO2 is having gelling action (Silica gel). 30. Which of the following method is used for making wheel discs? Gas welding is mainly suited for welding of thin sheets, small diameter pipes and tubes. Management MCQ questions provides you all type of Marketing, Management, HRM, Business Communication, International Finance and Other General Mcq questions related on Management and Marketing with easy and logical explanations. Explosive is a type of solid state welding. The heat that is produced has the temperature approximately twice than that of the melting point of steel, which is about 3000°C. a) Metal wires Answer: d 37. d) Notching dies 9. There should be proper orientation and it needs to be kept under high amount of pressure. Traversing of tool at any angle to the job axis produces curve surfaces. c) Silver It can also be employed for structures of sheet metals, and can be applied for making of boxes and cans. Explanation: The manipulator is a mechanical unit that provides motions (trajectories) similar to those of a human arm and hand. For the manufacture of automobile parts, such as axles, wheels or frames, flash butt welding is extensively used. Explanation: Water gas is a type of fuel gas that is used for the welding of thin sheets of steel which have a thickness of up to 8 mm. b) False d) High moving pressure What is the maximum curing time required in a compression molding process? Which type of lathe is also known as centre lathe? d) Rods The swing diameter over the bed is the largest diameter. d) Iron 4. 36. b) high power is required In which of the following processes most vibration is produced? In which of the following processes, life of dies is less? Answer: d In doing this, no current is required to be passed through the metal, and usually, no heat is needed for this too. Care should be exercised when interpreting the working envelope of a Robot, Answer: c Which type of feed is needed in facing operation? The maximum thickness that can be achieved varies depending on the metal. 1. a) 0.4 minutes a) True Pendulum Configuration The working envelope of the pendulum configuration resembles that of a simple horseshoe having a segmented shaped cross section. Explanation: In spot welding process, the metal or the alloy parts which are to be welded, are heated in their in their zones. d) Kevlar Which of the following method is not used in applying pressure in spot welding process? d) none of the mentioned Explanation: When after the achieving of a desired thickness of the shell, the dump box is rotated backward by 180 degrees so that the excess of sand falls back into the box, leaving the formed shell intact with the pattern. b) centre lathe Explanation: In hot chamber die casting, the holding furnace for the liquid metal is integral with the die casting machine, whereas in cold chamber die casting, the metal is melted in separate furnace and then poured into the die casting machine with the help of a ladle for each casting cycle which is also called shot. b) Curing temperature 13. Job analysis b. 39. c) 130°C For example, circular blanks are taken out from the metal sheet for subsequent deep drawing of cups. b) cross This section on C MCQ questions includes collections of multiple-choice questions on fundamentals and history of C language, keywords, variables, structures and functions in C. It also includes control structures and conditional operators used in C. Solved MCQ of C set-1; Objective Questions of C with answer set-2 What is the maximum frequency used in ultrasonic welding? Explanation: Among two-high rolling mill, cluster rolling mill, separation rolling mill and tandem rolling mill. More the passing of Co2 more will be the strength of the mould. Answer: b Explanation: Exiting velocity, among the given four velocities, that is slip velocity, surface velocity, entering velocity and exiting velocity, the exiting velocity is considered to be having most magnitude. Answer: a In this process, material is fed into a barrel of high temperature, then by mixing it is forced into a mould cavity where it solidifies and gets hardened. a) in parallel Explanation: In spot welding process, to bring the heated parts in contact with one another, mechanical pressure is applied. a) engine lathe The striking power is mainly dependent on the capacity of machine used. Match Plate pattern consumes more time in moulding operations than loose piece pattern. Door insulation seals, chewing gums and cables are the applications of polymer extrusion. a) 0 to 2 % Work within a system, not against it. a) engine lathe This is the Multiple Choice Questions (MCQs) in Chapter 27: Data Reception from the book Teach Yourself Electricity and Electronics, 5th edition by Stan Gibilisco. Answer: a Explanation: None. b) Pumping section a) engine lathe In gas welding, the hoses are mainly used for making the connection between gas torch and regulators. 6. b) Inverse relation d) special purpose lathe c) Air pressure Explanation: In two high rolling mill, the direction of both the rollers is opposite to one another. Classification, Selection and application of Machine Tools. c) Geometry b) 0.02mm This method is also known as contour shearing. c) Toughness d) open loop Choose the basic element for an automated machine tool Answer: b Upset butt welding is majorly used in the making of automobile parts. Answer: b Non-membranous organelles are not surrounded by a membrane such as Ribosomes and Centrosome , Membranous organelles are surrounded by a membrane such as Endoplasmic reticulum , Golgi body , Lysosomes , Mitochondria , Vacuoles and plastids .. Non-membranous organelles Ribosomes. c) Impact extrusion 28. 30. c) Anticlockwise-Anticlockwise 20. c) Chucker Explanation: As per the classification of lathe, duplicating lathe the type of special purpose lathe. What is the density of the plastic used in speed tip welding? c) Cables c) Open die forging Thermit welding is called as fusion welding. 20. We assumed above that B of R(0) and B of P(1) were equal, however they differ because of this phenomenon and B is given by c) Thermal resistance In part programming, interpolation is used for obtaining _______ trajectory. 19. Not just that, but the maintenance in transfer molding too is lower than compression molding. d) 3200°C 7. A flashback is a condition in gas welding, when the pure methane gas is used as fuel gas instead of acetylene. a) Slip velocity 31. c) Won’t change Explanation: Upset butt welding is mainly used for the manufacture of welding bars, rods, wires or tubing. Explanation: In ultrasonic welding method, the parts which are to be joined, are kept clamping to one another in between of supporting member and the welding tip. Answer: b b) False 12. Typical ranges are in the region of 500 km to 2500 km and this effectively fills in the gap in VHF coverage (see Figure 5.1). The metal is then held at the same temperature till it is solidified. Then the Co2 is supplied to the mould and reaction takes place as follows: b) Copper and tungsten d) 14 Thus, together with the depth of cut, feed decides the cross section of the material removed for every rotation of the job or the tool. d) 1000°C d) Open die forging 37. 4. 29. Explanation: In drop forging, the anvil is a lot heavier than the hammer. d) 5 minutes a) Air jet cooling system 26. For IBPS PO, IBPS Clerk, SBI PO, SBI clerk and other banking exams. a) True c) 400-500 tonnes 14. 20. for a number of reasons. The casting cycle basically starts when the two parts of the die are apart. d) heuristic a) Drop forging d) all of the mentioned In two high rolling mill, if the direction of the rollers is reversed, what is it called? Moisture from the mould can be removed by using of dryer or heater in Co2 moulding. d) 0.04mm a) Casting One part is the stationary half or cover die, which is fixed to the die casting machine. 18. Answer: d 26. This process saves a lot of molten metal and hence economizes the production. d) Exiting velocity It excludes any tools or workpiece which the end effector may hold. a) Direct extrusion Which of the following is not a type of resistance welding? b. 10. 18. They basically use cutting and shearing action for cutting the material. The welding of materials like tin, lead, zinc and antimony cannot be welded using flash butt method. c) Grey cast iron Multiple Choice Questions and Answers on Mobile Communication.Objective Questions and Answers on Mobile Communication . c) Copper and chromium d) none of the mentioned b) Draft Answer: b d) Cheek Answer: c Explanation: Among the following, seam, projection and spot are few of the types of resistance welding. a) Increase c) 50,000 Hz d) Not related Answer: b b) in series Ejector die only moves out itself for the extraction of the castings, but the lubricant is essential for the easy removal of the castings. Answer: d b) cylindrical A configuration for a robot is 6. A solid ram is used in direct extrusion. 25. a) 30,000 Hz d) 3100°C a) True Answer: a In hot chamber die casting, the plunger is also used for taking back of unused molten metal to the gooseneck after the fulfilling of the cavity. a) helicoidal In compression molding, the curing time does not depend on which of the following factors? Answer: a Answer: c Answer: a c) 1400°C Answer: a The flame temperature of water gas is approximately about 2300°C. c) 145 kVA a) 10,000 Hz Answer: b First they brought into a molten state and then a fusion is taking place between two pieces of metal in such a way that the point of fusion closely approaches the strength of the metal fused. b) False Much passing of Co2 gas results into difficult breathing of the mould. It is easy to produce any complex shapes and narrow sections in the die casting. • Open-loop or closed-loop: depending on the control system adopted for axis motion control. Explanation: Among the following, ultrasonic, friction and diffusion are a few of the types of related processes. It is made of ductile iron or of cast steel. Answer: b 10. a) Difference between starting and final thickness What is the flame temperature of city gas? d) Boiling point Answer: a b) tool room lathe b) Doors Which of the following property does not improve in the hot rolling process, of a cast? 45. Before beginning the process, the ingots are heated up to what temperature? Explanation: Wood lathe is the type of speed lathe. Answer: b • More complicated maintenance due to the complex nature of the technologies How much do the presses in press forging weigh? 3. What is the flame temperature of water gas? Explanation: Blanking is a kind of shearing operation which is generally carried out along a closed contour. Answer: b Explanation: In gas welding, acetylene is used as a fuel gas which produces hot flame when it is mixed with oxygen. Its actual shape … Explanation: Generally, additives are added to the sand mixture to improve the surface finish and also for the avoiding of any thermal crack during pouring. Explanation: The workpiece which has its position fixed is called as the target plate and the other plate is called as flyer plate. c) 10% We help you to prepare for govt exams like SSC, IAS, Bank PO, Railways a) Triangular b) Surface velocity 30. Answer: a Additives can be used for the non-ferrous application to avoid the poor collapsibility of the mould. a) True b) 1200°C a) 40 m/sec Answer: c a) drilling action Answer: a Which of the following metal is used in the wire drawing process in die making? Cool water is circulated through the passages to extract heat from the hot polymers or plastics components made in the injection moulding process. c) taper c) degree of freedom b) Indirect extrusion 40. But in cold welding, there is no use of a liquid phase, that is, joining is done without using heat. Up to what size can wires can be drawn by wire drawing process? 3. a) True c) 1250°C Answer: a Explanation: The minimum curing time that is required for the complete operation of compression molding is 0.5 minutes. b) Air-lift hammer Answer: b Co2 gas is supplied to the mould for sufficient time. 5. a) Sweep pattern Co2 moulding process is an ideal process, where speed and flexibility is the prime requirement. a) high torque is required a) engine lathe A triple action press, punch and pressure pad are the main equipment used for the blanking operation. d) Nail hammer d) Only the dimensions that are perpendicular to the parting plane a) True It is round-shaped organelles , Its function is synthesizing protein in the cell, Some of them … b) centre lathe b) False c) 8 Answer: a Explanation: Gas welding is usually referred as oxy welding or oxy-fuel welding which is a process of joining metallic materials by application of heat produced by the gas flame. In what conditions are the parts kept before welding in ultrasonic welding method? A cubical or spherical or a pyramidal billet cannot be designed for a good output. Which of the following ways of cooling is used for the maintaining of die temperature? Answer: a And the carbon atoms are joined with hydrogen atoms by making a triple bond. Discrete Multiple-Choice Questions. But, for material such as aluminum, its high melting temperature makes it difficult to cast by hot chamber die casting process, because continuous contact of gooseneck with the molten metal can destroy the gooseneck material. Which of the following is not a type of solid state welding? How much percentage of sodium silicate (Na2SiO3) is added to the sand mixture in Co2 moulding? 33. Answer: b b) melting action d) Magnesium a) True What is the maximum thickness that can be welded in ultrasonic welding? c) Mechanical pressure a) 0.01mm ‘α’ is the angle between target plate and flyer plate. T – lathe is the example of special purpose lathe. Answer: a Explanation: The presses used for such forging processes are manufactured for very heavy use. It is also used for burning the mixture at the end of the tip, and also provides a mean for moving and directing the flame front. Explanation: Among the following processes, that is press forging, drop forging, open die forging and closed die forging, drop forging is a process where more amount of noise occurs. 40. Four options are given to the each question and only one options is the correct one. Explanation: In gas welding, various metals like cast iron, steel, aluminium, copper etc. c) 145 kVA b) Magnetic resistance b) 11 mm a) True Explanation: In three high rolling mill, the direction of the rollers in the top and bottom are the same, and the direction of the roller in the middle is opposite to the two. Answer: d c) Sand Answer: d b) 2.1 mm c) Brazing d) Oil c) 2700°C d) 70 m/sec The presses which are generally used in press forging are of the capacity of 500 to 600 tonnes. d. honesty before success; Be relentless in getting your message across. Answer: b What is the minimum curing time required in a compression molding process? Reinforcing ribs are generally provided perpendicular to the parting line and made thinner than the mould walls. a) Tin It is a versatile machine. c) pneumatic 32. b) Direct extrusion Answer: a a) Drop forging A high voltage is supplied when the flashing action takes place. Answer: b In the hot chamber die casting process, which of the following parts is used for the pumping of liquid metal into the cavity? a) True For extruding stainless steel or other non-ferrous alloys or steel alloys, extrusion process can be used. Duplicating lathe is the type of____ This causes the life of the hammer and the dies to be less. DIRECTIONS: Each of the multiple-choice questions that follow is based on Praxis-related pedagogical knowledge in chapter 4. Answer: b d) Oil b) False d) robot vision control Explanation: The prepared shells are joined together by mechanical clamping or sometimes adhesive bonding is also preferred for joining of shells. a) right to left rotation of the object d) Zinc Explanation: The shape of the billet in an extrusion process is designed to be cylindrical only. The lubricant is sprayed on the die cavity manually or by the auto lubrication system so that the casting will not stick to the die. Answer: b Which of the following processes of moulding is widely used for the manufacturing of bottle caps and automotive dashboards? Answer: d 23. Explanation: The process of ultrasonic welding is mainly used for the joining of similar metals or dissimilar metals using vibration energy, by way of high frequency. Answer: b b) Magnesium stearate a) Explosive Explanation: This is true. a) Only Copper d) 0.92 mm Explanation: In drop forging method, the forging is produced when there is a drop of the hammer on the metal. c) Eutectic fusion bonding Answer: b Grain size of the sand particles has no affects on the surface finish of the casting. a) intelligent Explanation: Flat surface is produced in facing operation as per the definition. 35. b) false This working envelope is important when selecting a Robot for a particular In the cable extrusion process, what is the speed of product winding? Planning - MCQs with answers - Part 1 1. c) speed lathe In metal forming, drawing dies and bending dies are also used for the forming of metal sheets. c) speed lathe b) False This does not affect the final product physically, once the metal has solidified. Explanation: Only robots are associated with automation. d) none of the mentioned Free online NTA UGC NET guide book covers the solved question papers of old UGC NET, NTA NET, UGC SET, UGC SLET exam. 2. 19. c) 2300°C Which of the following is the type of engine lathe? In which of the following processes most noise is produced? a) actuator cytotoxic T cells and antibody dependent cellular cytotoxicity. In gas welding, the joint can be made even much stronger than the original. c) Product of starting and final thickness Up to what thickness, can steel be welded using spot welding process? Explanation: Sand, hexa and additives, which are all dry, are mixed inside a Mueller for a period of 1 minute, then the liquid resin is added and mixing is done for another 3 minutes. Na2SiO3 + Co2 —–> SiO2 + Na2Co3 c) 6 kVA Explanation: CNC machine tool systems can be classified in various ways such as: Geared lathe is the type of____ Which type of feed is needed in turning operation? In this Question set you will get 10 Objective Questions with Answer related to DBMS (Database Management System). a) One piece pattern Explanation: In Co2 moulding, over-gassing and under-gassing can affects the properties of cured sand adversely. Explanation: There are various types of welding processes, one of them is a newer welding process. 29. d) 70 MPa a) Hand lever d) 3300°C a) Tin c) 2800°C d) jointed arm type 3. a) Accumulator Then a plunger which is hydraulically operated moves up in the gooseneck to open the entry port for the entry of liquid metal into the gooseneck. c) Impact extrusion Explanation: Interpolation consists of the calculation of the coordinated movement of several axes using the programmed parameters, in order to obtain a resulting trajectory, which can be of various types, such as: Explanation: A solid ram is used in direct extrusion or forward extrusion, whereas a hollow ram is used in indirect extrusion. The density of polypropylene is 946 kg/m3 and it starts melting at 130°C. Explanation: Circuit boards is not an application of polymer extrusion. a) Cubical Extrusion is a process of forcing plastic which is at a very high temperature, through the dies, and gets opened at a required shape. a) engine lathe Answer: a c) 4 minutes a) True 45. a) pay load A draft allowance is provided to ___________ Explanation: None. Answer: b Answer: a Film extrusion process, best involves film having a thickness below what length? Its movements are from point to point, and the cycle is repeated continuously. 23. 14. a. Answer: b c) Entering velocity 54. Answer: b the work of an ion pump. _____ is the process of collecting job related information. d) all of the mentioned a) True d) Hydrostatic extrusion 15. Each question has one and only one correct answer. b) Chewing gums a) True b) False d) none of the mentioned 27. Explanation: Among the following methods, press forging is one method that is the most widely and commonly used method for the manufacture of hollow bodies, wheel discs and panels. a) Electric contact Explanation: None. a) Sweep pattern The magnitude of slipping is measured by the term called Forward slip. Answer: c Explanation: Oxy-acetylene process is most suited for the joining of metal sheets or for joining metal plates which are having a thickness of 2mm to 50mm. 49. Explanation: None. Upset butt welding is majorly used in the making of automobile parts. d) none of the mentioned b) Transfer moulding 32. Answer: c 21. Wood working lathe is the type of ____ c) hardness of the cutting tool and material of of piece should be same Answer: b Answer: b Explanation: No other things like clay, water and resins are added to the sand except sodium silicate, which reacts with the sand mix to increase the flow-ability to fill up corners and intricate contours. There are various agents which are used cooling these materials down, such as, air or water or its direct contact with a very cold surface. Die casting involves the preparation of components by injecting molten metal at high pressure into a metallic die; this way of pouring of molten metal distinguishes die casting from the permanent mould casting. In some instances, an intense immunologic reaction to a viral agent can result in immunopathology and a serious clinical syndrome. 50. b) False b) Magnetic field Explanation: Pattern is the replica of the object. 17. d) Loose piece pattern It is primarily intended for producing only cylindrical surface but it can produce various types of surfaces. b) Two The inner core has a temperature of 3200°C, whereas the tip of the neutral flame has a temperature of 1250°C. b) False Lathe cannot produce internal features like holes. b) NC tape programming Take up the quiz below and get to find out! a) True b) 20,000 Hz Explanation: Spinning lathe is the type of speed lathe. d) Air-acetylene 2. 24. Which of the following has the most magnitude? b) cross Which of the following metals is used for the preparation of patterns in shell moulding? a) Projection c) Five c) both cross and longitudinal Answer: c a) 2 minutes When a material is being rolled, the perpendicular force on the arc is called what? Oxy-acetylene process is most suited for which of the following process of joining? c) Sulphur stearate a) One When the thickness of the material is more than 15 mm, an additional filler metal is added like a welding rod. Answer: b Answer: c Explanation: The main disadvantages of NC systems are: c) function performance Answer: b

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