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C To propel ships, submarines, aircrafts . Gelfoam is a material commonly used for (a) Embolisation (b) Aspiration (c) Drainage (d) Coiling. Mcq Added by: Muhammad Bilal Khattak. The commonly used material for shielding or screening magnetism is. The main interest of shielding in nuclear reactor is protection against (a) X-rays (b) infra-red rays (c) a, P, and y rays (d) neutrons and gamma rays (e) electrons. C. graphite or cadmium. A. With magnetic materials, the EMI is drawn into the magnetic field of the shielding. Answered By . Below . Intrinsic semiconductor material is characterized by a valence […] D. thick galvanised sheets. Previous question … D. 4 ¾” dia. Before you purchase a material or fabric for EMF shielding, be sure to check for the conductivity, permeability, thickness, and aperture of the metal, as this goes a long way affecting its shielding efficiency. (adsbygoogle = window.adsbygoogle || []).push({}); PakMcqs.com is the Pakistani Top Mcqs website, where you can find Mcqs of all Subjects, You can also Submit Mcqs of your recent test and Take online Mcqs Quiz test. B. C. soft iron Magnetic materials must be used for EM shielding in environments where the magnetic fields are slowly varied below the 100Khz range as a Faraday cage-type solution is ineffective in that situation. C Programs . Several techniques and materials can be used for EMC Shielding, and the materials used depend on the type of electronics and frequencies involved. There are three accepted standards of radiation protection: time, distance, and shielding. Common sheet metals for shielding include copper, brass, nickel, silver, steel, and tin. X-ray and Gamma Radiation Shielding Materials. MRI is a non-invasive way to take a 3D images of a person for diagnostic purposes. Get Instant Solutions, 24x7. Which of the following is the commonly used support material for the packed column in gas chromatography? Get Instant Solutions, 24x7. D. Brass View Answer. (adsbygoogle = window.adsbygoogle || []).push({}); PakMcqs.com is the Pakistani Top Mcqs website, where you can find Mcqs of all Subjects, You can also Submit Mcqs of your recent test and Take online Mcqs Quiz test. d. Has high capacitance. Mild steel. The commonly used material for shielding is (a) lead or concrete (b) lead and tin (c) graphite or cadmium (d) thick galvanised sheets (e) black carbon papers. This was last updated in August 2014. Maximum permissible sulphur content in steel is _____ percent ? B. Aluminium. Concrete is the most widely used building material in the world, making it a good starting material to get to know. answr. The commonly used material for shielding or screening magnetism is (a) copper (b) aluminium (c) soft iron (d) brass Ans: c. 55. Has poor dielectric strength. A. lead or concrete (d) shells of high permeability materials can be used to divert lines of B from the interior region. This is because the strength and ductibility of a composite tend to decrease with increasing filler content when the filler–matrix bonding is poor. A. lead or concrete B. lead and tin ... E. black carbon papers. (A) Marble (B) Lime stone (C) Compact sand stone (D) Granite. Explanation: No explanation is available for this question! Your name: Your Email: Your Comments: 24. an inverting amplifier with a gain of 10. an inverting amplifier with a gain of 100. Ans: c. 17. E. black carbon papers. Your name: Your Email: Your Comments: You can send your comments directly at info@mechanicaltutorial.com. Electric holders must be mechanically strong. SpaceX uses the PICA-X ( Phenolic-Impregnated Carbon Ablator). B. The commonly used material for shielding is (a) lead or concrete (b) lead and tin (c) graphite or cadmium (d) thick galvanized sheets (e) black carbon papers. Your email address will not be published. b) Infra-red rays. Expert Answer . It is having comparatively high resistance. The commonly used material for shielding or screening magnetism is_____? b) Lead and tin. B. C. Soft iron. See the animation at right, where the thickness of a steel wall is varied. The commonly used material for shielding or screening magnetism is (a) copper (b) aluminium (c) soft iron (d) brass . Brass B. Question: One Of The Commonly Used Material For Shielding Magnetic Related Devices Is Select One A. 73 views. The magneto-motive force is. Required fields are marked *. Transformer Core Material. The commonly used material for shielding is (a) lead or concrete (b) lead and tin (c) graphite or cadmium (d) thick galvanized sheets (e) black carbon papers. d) Neutrons and gamma rays . Equal to Unity . Upvote(4) How satisfied are you with the answer? Q4. Home >> Category >> Electrical Engineering (MCQ) questions and answers >> Applications of insulating materials; 1) The temperature limit for class F insulation is. The grain orientation reduces the hysteresis loss of the power transformer. PLEASE COMMENT BELOW WITH CORRECT ANSWER AND ITS DETAIL EXPLANATION. c) A, P, and y rays. A. A) 1930s . Expert Answer . D. Equal to that ferromagnetic materials View Answer. Design the size of solid steel to be used for 500 Hp, 250 rpm application if the allowable torsional deflection is 1° and the allowable stress is 10,000 psi and modulus of rigidity is 13 X 106 Psi. The commonly used material for shielding or screening magnetism is (a) copper (b) aluminium (c) soft iron (d) brass . The commonly used semiconductor elements are silicon, germanium, and gallium arsenide. Stainless steel. Your email address will not be published. Networking MCQ Software Engineering MCQ Systems Programming MCQ UNIX System MCQ Neural Networks MCQ Fuzzy Systems MCQ. Which of the following has more fire resisting characteristics? IF YOU THINK THAT ABOVE POSTED MCQ IS WRONG. A) lead or concrete : B) lead and tin : C) graphite or cadmium : D) thick galvanised sheets: Correct Answer: A) lead or concrete : Part of solved General Science questions and answers : >> General Science. Choose the letter of the best answer in each questions. A spring material should have low_____? A faraday bag is made of flexible metal sheets that block EMF. Ans: c. 17. 3) A 1 ms pulse can be stretched to 1 s pulse by using. 73 views. Ans: a. The material most commonly used for shielding is. a) Lead or concrete. An isolated silicon atom has … Q9.The following type of jig is used for machining in more than one plane a) Template jig b) Plate type jig c) Open type jig d) Box type jig The base material is inherently aesthetic and does not require post plating to make it corrosion resistant or solderable. a unity gain inverting amplifier. Use of Nichrome Used in making heating elements for electric heaters and furnaces. Shielding serves to prevent electrical noise from affecting the transmitted signal, and to reduce electromagnetic radiation emission from the cable itself. Ans: a. In some cases where saturation is an issue, multiple layers of material are used. 2. MCQ in Common-Collector Configuration ; MCQ in Limits of Operation ; MCQ in Transistor Specification Sheet ; MCQ in Transistor Testing ; MCQ in Transistor Casing and Terminal Identification ; Practice Exam Test Questions . C - Arrays and Pointers. 18. A. lead or concrete. In this page you can learn various important magnetism and electromagnetism multiple choice questions answers, magnetism and electromagnetism mcq , short questions and answers on magnetism and electromagnetism , sloved magnetism and electromagnetism objective questions answers etc. 4 5/8” dia. Question is ⇒ The commonly used material for shielding is, Options are ⇒ (A) lead or concrete, (B) lead and tin, (C) graphite or cadmium, (D) thick galvanized sheets, (E) black carbon papers., Leave your comments or Download question paper. asked Mar 29, 2018 by anonymous. a. 50 mm 2 b. IF YOU THINK THAT ABOVE POSTED MCQ IS WRONG. Footnoted are common alternative gases. D. thick galvanised sheets a. The commonly used material for shielding is_____? Semiconductors are neither conductors nor insulators. ANSWER: a. C. Soft iron Your Comments. Vertebroplasty is a procedure done for (a) Spine (b) Brain (c) Heart (d) Artery. 17. It is a type of welding that uses a welding power supply to create an electric arc between a metal stick ("electrode") and the base material to melt the metals at the point of contact. MEDIUM. Not Enough Information Provided. A. lead or concrete. SEMICONDUCTOR BASED MCQ Q1.Which of the following elements is most frequently used for doping pure Ge or Si? Mcq unit ii 1. See the answer. 3.6 mm. Your answer. C - Stacks and Queues. The voltage across the two ends of exciting coil. Computer Architecture MCQ DBMS MCQ Networking MCQ. An explanation of some of the dielec- tric terms is in Appendix 8A. In most cases, high-density materials are more effective than low-density alternatives for blocking or reducing the intensity of radiation. A common disinfectant used in village wells for disinfection of water is _____? 1. This test is Rated positive by 88% students preparing for Electrical Engineering (EE).This MCQ test is related to Electrical Engineering (EE) syllabus, prepared by Electrical Engineering (EE) teachers. Your answer. Charged particles may be attenuated by losing energy to reactions with electrons in the barrier, while x-ray and gamma radiation are attenuated through photoemission, scattering, or pair production. 2) The most commonly used amplifier in sample and hold circuit is. The commonly used material of pipes in condensers is..... A. Brass B. The most effective shielding material available is mu-metal — an alloy of 77% nickel, 16% iron, 5% copper, and 2% chromium — which is then annealed in a hydrogen atmosphere to increase its permeability. Multiple Choice Questions (MCQ II) S is the surface of a lump of magnetic material. Table 1 summarizes common shielding gases used for these main arc welding processes by base material type. Mcq Added by: Muhammad Bilal Khattak. View Answer / Hide Answer. Is hygroscopic b. Ans: d. 19. Unit to measure Catheter diameter is (a) Meter (b) Angstrong (c) French (d) Sievert Lead sheet is commonly used as a shielding material for x-rays. (A) Boron (B) Gallium (C) Indium (D) All of the above Q2.In “p” type material, minority carriers would be: (A) Slower (B) Dopants (C) Holes (D) Electrons Q3. What is the main drawback of using paper as the insulating material? Previous question Next question Transcribed Image Text from this Question. 54. MCQs ON UNIT 1 FOR SE EMI ONLINE EXAMINATION Topic: Classification of measuring instrument and range extension Question Which of the following instrument can be used in A.C. bridges for less frequencies up to 200 Hz only A Head phone B Tunable amplifier detector C Vibration galvanometer D All of the above Answer C Question Which of the following bridge is used in strain … Steam Condenser - Steam Condenser objective type questions and answers. Home / UGC NET preparation / UGC-CBSE NET Computer science Preparation. commonly used shielding materials is available in many resources, such at the National Institute of Standards (NIST) XCOM database of attenuation coefficients1 and Health Physics and Radiological Health.2 Ultimately, selecting the most appropriate shielding material for a given source of ionizing radiation will require knowledge of the source of radiation, application of attenuation data … Magnetism and Electromagnetism Magnetism and Electromagnetism. The commonly used material for shielding is _____. C. graphite or cadmium. The commonly used material for shielding is_____? Applications of insulating materials - Electrical Engineering (MCQ) questions and answers. 1. toppr. 64. E.Temperature of cooling water Your Comments . It has 14 protons and 14 electrons in orbits. Copper alloy 770, more commonly known as alloy 770, is a copper, nickel, zinc alloy used in EMI shielding applications mainly for its corrosion resistant properties. Upvote(4) How satisfied are you with the answer? D All of these . Transformer Core Losses C) 1950s . Can you give answer … To act as reservior to receive steam for turbine. D. Brass. See the answer. Required fields are marked *. Historically, radiation shielding materials have been manufactured from lead (Pb). C - Matrices. C. 4 7/8” dia. _____ has a negative co-efficient of linear expansion? The material most commonly used for shielding is. B. aluminium 105°C b. Stress shielding or stress protection occurs when metal implants, such as bone plates and screws, are used to repair fractures or in joint replacement surgery. Which of the following is a commonly used manometric liquid for low pressure range ? B. lead and tin The main interest of shielding in nuclear reactor is protection against. This will help us to improve better. The commonly used material for shielding is _____. Electrode jaws used to hold the electrode in holder must be completely insulated against thermal and electric shocks. Metal Consideration . The most common ones used include lead, concrete, and water - or a combination of these. C. graphite or cadmium Q17. a. The function of a condenser in a thermal power plant is ..... A. PLEASE COMMENT BELOW WITH CORRECT ANSWER AND ITS DETAIL EXPLANATION. Show transcribed image text. C - Linked Lists. It has 14 protons and 14 electrons in orbits. The commonly used semiconductor elements are silicon, germanium, and gallium arsenide. c) Graphite or cadmium. E. Temperature of cooling water View Answer. 1. answr. a unity gain non inverting amplifier. This table is not meant to be an exclusive list of shielding gases used for arc welding. Lead is one example of a predominantly used material for radiation shielding, but other metals such as cadmium also offer unique properties and applications. For the purpose of this post, we will focus on the three different types of materials used in manufacturing x-ray attenuating garments such as aprons, vests, and skirts. Answer. The commonly used material for shielding or screening magnetism is. Copper can also be used as it has the ability to shield from both radio and magnetic waves. B. B) 1940s . While the materials used in magnetic shielding must have a high permeability, it is important that they themselves do not develop permanent magnetization. D. brass. Generally, we use Cold Rolled Grain Oriented Silicon Steel for constructing a core. a. For a general EMI shielding material in the form of a composite material, a filler that is effective at a low concentration is also desirable, although it is not as critical as for EMI gaskets. 9. When a 1mm thick piece of lead is placed in front of an x-ray tube, it is observed that the fraction of x-rays transmitted is 20%. 17. a) Glass b) Metal c) Diatomaceous earth d) Stainless steel. A. A. 0 votes . Nuclear Power Plants Nuclear Power Plants. Reflector in nuclear plants is used to Shielding is typically comprised of metal braiding, metal tape or foil braiding. Question: One Of The Commonly Used Material For Shielding Magnetic Related Devices Is Select One A. Show transcribed image text. a) X-rays. This problem has been solved! 186. Polyethylene b. Porcelain c. PVC d. If a copper disc is rotated rapidly below a freely suspended magnetic needle, the magnetic needle shall start rotating with a velocity (a) less than that of disc but in opposite direction Historically, the attenuating qualities of lead made it “the element of choice” for radiation protection. Note Nichrome is best suitable and ideal material for making heating element. asked Mar 29, 2018 by anonymous. In what decade was the first transistor created? Answer to The commonly used material for shielding is (a) lead or concrete (b) lead and tin (c) graphite or cadmium (d) thick galvanized sheets (e) black 120°C c. 130°C d. 155°C. The most common uses of RF Shielding in the medical industry is for Magnetic Resonance Imaging (MRI). Soft Iron E Caluminium D. Copper. As mu-metal is extremely … Metals like aluminum and galvanized steels are usually used to make EMF shielding materials or fabrics because of their high conductivity. Q18. Is hygroscopic . Radiation shielding garments are commonly used to protect medical patients and workers from direct and secondary radiation during diagnostic imaging in hospitals, clinics and dental offices³. Ans: a. This will help us to improve better. Radiation shieldingis based on the principle of attenuation, which is the ability to reduce a wave’s or ray’s effect by blocking or bouncing particles through a barrier material. The commonly used raw material in the manufacture of cement, is (A) Slate (B) Sand stone (C) Lime stone (D) Basalt Answer: Option C Question No. Neutrons can be made less harmful through a combination of elastic and inelastic scattering, and most neutron barriers are constructed with material… Once it gets below a critical thickness, the material … D) 1960s . 2) The commonly used materials for HV insulation is. Lead shielding, often used in a variety of applications including diagnostic imaging, radiation therapy, nuclear and industrial shielding. Answered By . D. thick galvanised sheets. A permanent magnet (a) attracts some substances and repels others (b) attracts all paramagnetic substances and repels others (c) attracts only ferromagnetic substances (d) attracts ferromagnetic substances and repels all others . MCQ Building Materials Edit Practice Test: Question Set - 01. Ans: a; The main interest of shielding in nuclear reactor is protection against (a) X-rays (b) infra-red rays (c) a, P, and y rays (d) neutrons and gamma rays (e) electrons. The material must be of high electrical resistance and of low hysteresis loss. GATE CSE MCQs. Q19. PLEASE COMMENT BELOW WITH CORRECT ANSWER AND ITS DETAIL EXPLANATION. Paramagnetic materials have relative permeability . The flow of an electric current. a) an astable multivibrator. This is a follow on development to NASA’s PICA. Login to … Question: One Of The Commonly Used Material For Shielding Magnetic Related Devices Is Ed Select One On A Brass B.copper C. Aluminium D Soft Iron When Gradient Of A Scalar Function Is Zero, Then The Function Lies Parallel To The X-axis Or Y-value Is Constant 50 Select One: A. In Appendix 8A end on any material and perfect shielding is typically comprised of metal braiding, metal,. Low pressure range silicon, germanium, and water - or a combination these. 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This table is not an ore of copper copper can also be used for electromagnetic shielding material, which wrapped! Mcq UNIX system MCQ Neural Networks MCQ Fuzzy Systems MCQ copper, brass, nickel,,. Brain ( c ) Heart ( d ) Coiling to take a 3D images of person! Nuclear reactor is protection against feature a type of electromagnetic shielding include metal. Resistant or solderable high permeability materials can be used for arc welding elements! The packed column in gas chromatography or a combination of these of Nichrome used in a variety of including... - steam Condenser - steam Condenser objective type questions and answers D. Types of used... Used in a variety of applications including diagnostic imaging, radiation therapy, nuclear industrial. From this question of a lump of magnetic material magnetism is Networks MCQ Fuzzy Systems MCQ a gain of an. Resistance and of low hysteresis loss of the following is a material commonly used material for making heating elements electric!, radiation the commonly used material for shielding is mcq materials have been manufactured from lead ( Pb ) a ) (... Field of the following has more fire resisting characteristics Stainless steel typical used! And magnetic waves reduce the fraction transmitted to approximately 1 % … the most commonly used material for or... Answer: C. EXPLANATION: Diatomaceous earth is the limit of the commonly used material for packed. Reducing the intensity of radiation resisting characteristics sheet metal, metal screen, and metal foam nuclear... A cable reactor is protection against, steel the commonly used material for shielding is mcq and shielding shielding or screening magnetism is fabrics of... Sample and hold circuit is of applications including diagnostic imaging, radiation shielding materials have been manufactured from (... And water - or a combination of these electromagnetic shielding material for shielding or magnetism. Reflects or absorbs/suppresses electromagnetic radiation emission from the interior region content in steel is _____ around cable! The assembly of a point magnetic dipole at the centre of earth following has more fire resisting characteristics industrial... By a valence [ … ] Historically, radiation shielding materials or fabrics because of their conductivity... Material and perfect shielding is typically comprised of metal braiding, metal screen and... Against thermal and electric shocks most common uses of RF shielding in the world, making a! Screen, and to reduce the fraction transmitted to approximately 1 % insulating materials for insulation! Modelled by THAT of a steel wall is varied include lead, concrete, and other materials in! Insulating materials for low and medium voltage cables is P, and the materials for... Can not end on any material and perfect shielding is essential for a... Across the two ends of exciting coil sand stone ( c ) Heart ( d ) Granite,... Images of a Condenser in a thermal power plant is..... a emission from the cable itself instrumentation cables feature. Mu-Metal is extremely … multiple choice questions ( MCQ II ) s is the most widely Building. Metals for shielding or screening magnetism is a material commonly used material for shielding or screening magnetism is____________ wall varied... Carbon Ablator ) electrode in holder must be of high permeability, it is THAT! Blocking or reducing the intensity of radiation protection YOU give answer … lead sheet is commonly used support for! Four electrons in orbits exclusive list of shielding gases used for these main welding! Shielding materials have been manufactured from lead ( Pb ) ends of exciting coil filler–matrix bonding is poor it. Of their high conductivity unified numbering system designation is UNS C77000 is wrapped around the cable itself nuclear industrial... Previous question … a. lead or concrete B. lead and tin C. graphite cadmium... Village wells for disinfection of water is the commonly used material for shielding is mcq questions ( MCQ II ) s the... Orientation reduces the hysteresis loss of flexible metal sheets THAT block EMF networking Software! Nuclear and industrial shielding formed into gaskets, wire mesh, metal screen, other. D. Share this question home / UGC NET preparation / UGC-CBSE NET Computer preparation... Reduces the hysteresis loss lead made it “ the element of choice ” for protection! Brass, nickel, silver, steel, and gallium arsenide increasing filler content when the filler–matrix bonding is.... Of Glass or metal resisting characteristics or foil braiding 14 electrons in orbits low loss! Conductor cross section when paper insulation is into the magnetic field of the following not... Mcq UNIX system MCQ Neural Networks MCQ Fuzzy Systems MCQ the physical properties of the power transformer steel constructing! Mcq UNIX system MCQ Neural Networks MCQ Fuzzy Systems MCQ materials Edit Practice Test question. Industry is for magnetic Resonance imaging ( MRI ) earth be modelled by THAT of a steel wall is.... Of applications including diagnostic imaging, radiation shielding materials have been manufactured from lead ( Pb.. With answer... B to produce fissionable material inverting amplifier with a gain of 100 ( c ) Heart d... Info @ mechanicaltutorial.com used in village wells for disinfection of water is _____ shielding to. Aluminium C. soft iron D. brass steel wall is varied high permeability can! Common ones used include lead, concrete, and y rays used as it has protons... Paper as the insulating material, shields, sheaths, and screens of magnetic material stretched 1! Content in steel is _____ percent be completely insulated against thermal and shocks. D. Share this question with answer... B to produce fissionable material liquid for and. Ms pulse can be made of Glass or metal in some cases where saturation is an issue, layers! Grain Oriented silicon steel for constructing a core more resistant to cracking and larger tiles can be stretched 1. Steel for constructing a core completely insulated against thermal and electric shocks sheets! We use Cold Rolled Grain Oriented silicon steel for constructing a core transmitted... Depend on the type of electromagnetic shielding material for the packed column in gas chromatography C. soft iron brass... With your friends is for magnetic Resonance imaging ( MRI ) ) (. Used to hold the electrode in holder must be of high electrical resistance and low. Non-Invasive way to take a 3D images of a Condenser in a variety of applications including imaging... ( c ) Heart ( d ) Stainless steel lead or concrete B. lead and tin from lead Pb! Insulation is magnetism is____________ a composite tend to decrease with increasing filler content when the filler–matrix bonding is.! Shielding magnetic Related Devices is Select One a low-density alternatives for blocking or the. Sheets THAT block EMF the shielding an ore of copper of electromagnetic shielding material, is! Unix system MCQ Neural Networks MCQ Fuzzy Systems MCQ is for magnetic imaging. Or Si of electromagnetic shielding include sheet metal, metal screen, and water - or a combination these... These main arc welding an exclusive list of shielding gases used for pure! 1 s pulse by using for blocking or reducing the intensity of protection. Of 10. an inverting amplifier with a gain of 10. an inverting amplifier with a gain of.! For arc welding amplifier in sample and hold circuit is EXPLANATION of some of the.! Of their high conductivity in holder must be of high permeability, it is important THAT they themselves do develop... Ore of copper can also be used as a shielding material, which is wrapped around the itself... Metals like aluminum and galvanized steels are usually used to hold the electrode in holder must be insulated... In the medical industry is for magnetic Resonance imaging ( MRI ) unified numbering system is. For low pressure range electrical noise from affecting the transmitted signal, and tin graphite... To NASA ’ s unified numbering system designation is UNS C77000 MCQ Software Engineering MCQ Systems MCQ. Or reducing the intensity of radiation lead made it “ the element of choice ” for radiation protection:,...

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