5. (c) Field lines can cross each other The role of science is very important in our everyday life. (c) the pattern of the magnetic field associated with the solenoid is different from the pattern of the magnetic field around a bar magnet (a) Flemings right-hand rule is a simple rule to know the direction of induced current. If we solve for this solution or plot both the lines, we see that the intersect at (-40,-40). A swing check valve allows full, unobstructed flow and automatically closes as pressure decreases. Magnetic field lines appear to emerge or begin at the north pole and terminate at the south pole. (c) straight line The device which convert electrical energy into mechanical energy (a) 240 V Check valves are designed to prevent the reversal of flow in a piping system. The magnetic field is stronger at the poles because the field lines are denser near the poles. C = (C * 9/5) + 32C (C * 9/5) = 32-4/5 * C = 32C = -32 * 5/4C = -40, F = (F * 9/5) + 32F (F * 9/5) = 32-4/5 * F = 32F = -32 * 5/4F = -40. The magnitude of this induced EMF depends upon the rate of change of flux A circular loop placed in a plane perpendicular to the plane of paper carries a current when the keys is ON. Question 1. The section contains questions and answers on cartesian, cylindrical and spherical Coordinate System. F = (F * 9/5) + 32 F (F * 9/5) = 32-4/5 * F = 32 F = -32 * 5/4 F = -40. The direction of magnetic field produced by a current carrying conductor can be found out by using (b) the strong magnetic field produced inside the solenoid can be used to magnetise a piece of magnetic material like soft iron, when placed inside the coil Question 10. (c) 280 V (d) concentric circles near the point O but of elliptical shapes as we go away from it. Select the correct answer and click on the Finish buttonCheck your score and answers at the end of the quiz, Visit BYJUS for all JEE related queries and study materials, Frequently Asked Questions on Properties of Magnetic Field Lines. Answer: (a) E 1 > E 2 The sequence impedance varies with the type of power system components under consideration:-. Question 5. The figure here shows electric field lines. All Rights Reserved. Magnetic field lines form a closed-loop. Magnetic field lines do not cross one another. Different Control Valve Flow Characteristics. The total number of lines of force is considered equal to the charge of the object in coulombs. Colour of insulation of live wire, Answer: The magnetic field is a field produced by the magnet or electric charges in motion. Another way is the use of field lines. Flemings Left-Hand rule is mainly applicable to electric motors and Flemings Right-Hand rule is mainly applicable to electric generators. The seating surface is placed at a slight angle to permit easier opening at lower pressures, more positive sealing, and less shock when closing under higher pressures. 2011-2022 Sanfoundry. (d) the N- and S-poles exchange position when the direction of current through the solenoid is reversed. An electric field is also described as the electric force per unit charge. Electricity and electric and electronic equipment plays a vital role in our everyday life. Some important properties of magnetic field lines are listed below . Straight body swing check valves contain a disk that is hinged at the top. (c) straight lines parallel to each other (Due to earths magnetic field) Its SI unit is Weber and in CGS is Maxwell. (a) earthing (d) 220 V. 1. Mathematically, it can be represented as a vector field which can be plotted as different sets on a grid. Principle of electric generator Field lines have both direction and magnitude at any point on the field. Among the following statements, the incorrect statement is The N-pole of the resultant magnet is on the faces close to A PLC can be programmed according to the operational requirement of the process. In either style, the disk and hinge are suspended from the body by means of a hinge pin. Butterfly Valves Construction, Types, Stem & Bonnet Assembly, What is a Feedback Control System? Magnetic field in a solenoid formula is given as B = 0 nl. The insulation colour of earth wire is (d) square shape. ResearchGate is a network dedicated to science and research. Connect, collaborate and discover scientific publications, jobs and conferences. 6. The section contains questions and answers on conductors, dielectrics and its strengths, polarization and boundary conditions. Both of these generators produce electrical power based on the principle of Faradays law of electromagnetic induction.. Our 1000+ Electromagnetic Theory MCQs (Multiple Choice Questions and Answers) focuses on all chapters of Electromagnetic Theory covering 100+ topics. Web Magnetic field lines never intersect with each other. Reason : The electric field lines of the charged rod are perpendicular to the surface of conductor. (b) concentric ellipse (c) A if the current is small, and B if the current is large You can unsubscribe at any time. The section contains multiple choice questions and answers on advanced, tricky, tough electromagnetic theory. (c) The difference between the direct and alternating currents is that the current always flows in one direction, whereas the alternating current reverses its direction periodically. Closure is accomplished by the weight of the check mechanism, by back pressure, by a spring, or by a combination of these means. Put your understanding of this concept to test by answering a few MCQs. Magnetic Effects of Electric Current Class 10 MCQ; Sources of Energy Class 10 MCQ; Moving on from whole numbers to topics like decimals, lines and angles and more, class 5 offers a simple yet interesting range of topics. Casino Royale The Lord of the Rings: The Fellowship of the Ring The Lord of the Rings: The Return of the King The Lord of the Rings: The Two Towers Quantum of Solace Skyfall Die Another Day Star Wars: Episode IV - A New Hope Harry Potter and the Sorcerer's Stone Harry Potter and the Prisoner of Azkaban Dr. No From Russia with Love Thunderball Jurassic Park Full membership to the IDM is for researchers who are fully committed to conducting their research in the IDM, preferably accommodated in the IDM complex, for 5-year terms, which are renewable. In this circuit, R 1 and R 3 are the ratio arms equal to each other, and R 2 is the rheostat arm has a value equal to the strain gage resistance. You can refer to NCERT Solutions forClass 10 Science Chapter 13 Magnetic Effects of Electric Current to revise the concepts in the syllabus effectively and improve your chances of securing high marks in your board exams. Check the direction in which the compass needle points and mark the direction. NCERT Solutions for Class 10 Science Chapter 13 CBSE Free PDF Download. In static and balanced power system (c) use of stabilizers These valves are fully closed when the flow reaches zero and prevent back flow. 3. electric field-intensity, density, potential and electrostatic energy and proprties. 2022 Reproduction without explicit permission is prohibited. Choose the incorrect statements from the This was changed around the time of Celsius death in 1744, by two eminent contemporary scientists working independently of each other Frenchman Jean-Pierre Christin and Celsius fellow Swede Carolus Linnaeus. As mentioned, voltage is defined as the electric potential difference per unit charge between two points in an electric field. 4. The direction of this current flow can be About Our Coalition. Siemens AG (Berlin and Munich) is a global technology powerhouse that has stood for engineering excellence, innovation, quality, reliability and internationality for more than 170 years.Active around the world, the company focuses on intelligent infrastructure for buildings and distributed energy systems and on automation and digitalization in the process and The set of vectors are connected with lines. This condition can be partially corrected by using an external lever and weight. Question 14. Right hand thumb rule Therefore, magnetic field lines are vectors. Magnetic field lines can be drawn using a compass needle. Select the incorrect statement Q.20. We hope the given NCERT MCQ Questions for Class 10 Science Chapter 13 Magnetic Effects of Electric Current with Answers Pdf free download will help you. (d) mechanical energy to light energy. Answer: (c) if magnetic field lines are parallel and equidistant, they represent zero field strength. Concentric circles In the formula, B represents the magnetic flux density, 0 is the magnetic constant whose value is 4 x 10-7 Hm-1 or 12.57 x 10-7 Hm-1, N represents the number of turns, and I is the current flowing through the solenoid. document.getElementById("ak_js_1").setAttribute("value",(new Date()).getTime()); Solenoid Valves Energized or De-energized State ? It will immensely help anyone trying to crack an exam or an interview. We promise not to spam you. Both the Celsius to Fahrenheit and Fahrenheit to Celsius equations are linear (no quadratic terms) implying they are straight lines. The general types of check valves are swing, tilting-disk, piston, butterfly, and stop. Corona discharge can cause an audible hissing or cracking noise as it ionizes the air around the conductors. (a) blue Down Magnetic field and field lines: The influence of force surrounding a magnet is called magnetic field. AC generator converts energy into energy. Answer: (c) Field lines can cross each other. Reason : Both the Celsius to Fahrenheit and Fahrenheit to Celsius equations are linear (no quadratic terms) implying they are straight lines. Alternating current If you have any queries regarding Magnetic Effects of Electric Current CBSE Class 10 Science MCQs Multiple Choice Questions with Answers, drop a comment below and we will get back to you soon. NCERT Solutions for Class 10 Science Chapter 13 Magnetic Effects of Electric Current aid students in improving the self-confidence in their preparation for the examinations. Then Where, E is the electric field. Types & Advantages, Zero Suppression and Zero Elevation Calculations. They have different slopes and are non-parallel with a single solution. We have over 5000 electrical and electronics engineering multiple choice questions (MCQs) and answers with hints for each question. (a) the deflection in the galvanometer remains zero throughout. Since this matched the arrangement of the other scales then in use (Fahrenheit and Reaumur, mostly Kelvin and Rankine were about a century away still), the proposals were widely accepted and we still use 0 for freezing and 100 for boiling today. Magnetic field lines form a closed-loop. Answer: (d) there are momentary galvanometer deflections that die out shortly; the deflection are in opposite directions. Question 13. Why Thermocouple Reference Junction Compensation Required ? In the manufacturing industry, there will be a need for reprogramming due to the change in the nature of production. 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Question 6. Swing check valves are available in either Y-pattern or straight body design.if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[300,250],'instrumentationtools_com-box-4','ezslot_15',165,'0','0'])};__ez_fad_position('div-gpt-ad-instrumentationtools_com-box-4-0'); A straight check valve is illustrated in Figure. Therefore, magnetic field lines are represented by a vector. Solenoid Valve with Manual Reset Working Principle, What is an Actuator? (d) relative strength of magnetic field is shown by the degree of closeness of the field lines. Consider two points A and B. (a) Flemings right hand rule It is the best reference material to build a foundation for Science subjects for both board and other entrance (d) there are momentary galvanometer deflections that die out shortly; the deflection are in opposite directions. So the temperature when both the Celsius and Fahrenheit scales are the same is -40 degrees. Across: The section contains questions and answers on magnetic force, torque, dipole, materials, energy, circuits and boundary conditions. A PLC can be programmed according to the operational requirement of the process. For a current in a long straight solenoid, N- and S-poles are created at the two ends. A constant current flows in a horizontal wire in the plane of the paper from east to west as shown in the figure. (b) Flemings left hand rule (a) more at the ends than at the centre Be the first to get exclusive content straight to your email. The impedance offered by the system to the flow of zero sequence current is known as zero sequence impedance. -. (b) No two field lines can cross each other Electric motor The tangent drawn to the magnetic field lines gives the direction of the magnetic field. (c) same at all points 3. The fact that they intersected at a whole number is purely coincidental. (c) chemical energy to mechanical energy Wish you the best in your endeavor to learn and master Electromagnetic Theory! Magnetic field lines indicate the magnetic fields direction. (d) found to increase from one end to the other. Question 1. 4. magnetic field in intensity as well as density and also magnostatic energy and its properties. (c) green 1. Field lines have both direction and magnitude at any point on the field. Magnetic flux is the total number of magnetic field lines passing through a particular area. If you would like to learn "Electromagnetic Theory" thoroughly, you should attempt to work on the complete set of 1000+ MCQs - multiple choice questions and answers mentioned above. Digital Image Processing MCQ (Multiple Choice Questions) with dip tutorial, introduction, analog image vs digital image, signal, system, keywords, origin of camera, photography, etc. (b) elliptical in shape The disk seals against the seat, which is integral with the body. PLCs play a crucial role in the field of automation, using forming part of a larger SCADA system. The electric flux density at any point in the field is defined as the number of lines of force crossing perpendicularly a unit surface area at that point. Q is the charge. Electric flux is defined as the total number of lines of force emanated from a charged object. So the temperature when both the Celsius and Fahrenheit scales are the same is -40 degrees. 1. The formula of electric field is given as; E = F /Q. Magnetic Effects of Electric Current Class 10 MCQs Questions with Answers. (a) directly above the wire Question 11. 2022 Reproduction without explicit permission is prohibited. field lines are drawn over the horizontal plane ABCD, the lines are Prop 30 is supported by a coalition including CalFire Firefighters, the American Lung Association, environmental organizations, electrical workers and businesses that want to improve Californias air quality by fighting and preventing wildfires and reducing air pollution from vehicles. (b) The right-hand thumb rule is used to find the direction of magnetic fields due to current carrying conductors. If the key in the arrangement figure given below is taken out (the circuit is made open) and magnetic . You should practice these MCQs for 1 hour daily for 2-3 months. No tracking or performance measurement cookies were served with this page. 6. Magnetic field lines around a straight conductor forms a pattern of (b) red (g) current always flows in one direction. Magnetic fields are represented using magnetic field lines. (d) use of electric meter. 1000+ Electromagnetic Theory MCQ PDF arranged chapterwise! Types & Advantages, Zero Suppression and Zero Elevation Calculations, Electric Circuits Objective Questions Set 10. Requested URL: byjus.com/ncert-solutions-class-7-science/chapter-14-electric-current-and-its-effects/, User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/92.0.4515.159 Safari/537.36. Be the first to get exclusive content straight to your email. In the manufacturing industry, there will be a need for reprogramming due to the change in the nature of production. He originally defined 0 as the boiling point and 100 as the freezing point. We promise not to spam you. The current as seen from points A and B (in the plane of paper and on the axis of the coil) is anticlockwise and clockwise respectively. In India the potential difference between live wire and neutral wire is Magnetic field lines never intersect with each other. Magnetic field lines appear to emerge or start from the north pole and merge or terminate at the south pole. atmatm24365atm Draw in your notebook the symbols to represent the following components of electrical circuits: Connecting wires, switch in the OFF position, bulb, cell, switch in the ON position, and battery. We are not permitting internet traffic to Byjus website from countries within European Union at this time. Electric motor is a device which converts Answer. Move the compass needle to different positions and mark the directions. Anders Celsius actually defined his temperature scale exactly the opposite way that everybody thinks he did. Pole pitch is defined as the peripheral distance between the center of two adjacent poles in a DC machine. The section contains multiple choice questions and answers on types of polarization, plane waves in free space, dielectrics as well as good conductor, brewster angle and snell law. The photodiode is a p-n junction semiconductor device that transmutes the light into an electric current. The formulas for converting between degree Celsius and degree Fahrenheit are: To find the temperature when both are equal, we use an old algebra trick and just set F = C and solve one of the equations. (b) magnetic field lines are closed curves (d) B if the current is small and A if the current is large. At the centre of current carrying loop the magnetic field appears to be a , Across The MCQ Test offered by Embibe is curated based on revised CBSE Class Books, paper patterns and syllabus for the year 2021. 4. Question 3. Coulomb Law; Short and Open Circuit Lines; 12. The electric field strength at P 1 is E 1 and that at P 2 is E 2 If distance between P 1, P 2 is r, then which of the following statement is true? 2. ON OFF Valve Preventive Maintenance and Testing Procedure, Control Valve Accessories Principle, Purpose, Advantages. Answer: (d) In India, the AC changes direction after every \(\frac{1}{50}\) second. Different Types of Actuators, Difference Between Linear Actuator and Rotary Actuator, How to Protect Pumps from Cavitation? In the magnetic field, the force exerted by a magnet can be detected using a compass or any other magnet. Red. Fuse, Down: Start practicing now for exams, online tests, quizzes, and interviews! Composition disks are usually recommended for services where dirt or other particles may be present in the fluid, where noise is objectionable, or where positive shutoff is required. The section contains multiple choice questions and answers on dot and cross product, vector-position, properties and distance. (b) minimum in the middle Choose the incorrect statements from the following regarding magnetic lines of field. Therefore, magnetic field lines are represented by a vector. Response Time Test of RTD and Thermocouple, RTD Calculator : Calculate Temperature from Resistance, Thermistors and Resistance Temperature Detectors (RTDs), Thermocouple Temperature Measurement Errors. (c) at a point located in the plane of the paper, on the north side of the wire Assertion : On bringing a positively charged rod near the uncharged conductor, the conductor gets attracted towards the rod. As a result of the EUs General Data Protection Regulation (GDPR). A swing check valve is normally recommended for use in systems employing gate valves because of the low pressure drop across the valve. 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