Please type your E-Mail. B. Video ID Given below are protection relays MCQ questions with answers. Air circuit breakers can be used for current values up to: 3000 A; 6000 A; 9000 A; 18000 A; Correct answer: 2. Electromagnetic Relay Working. Static digital relay. By burden on the relay, we generally mean, 11. (b) is lighter than air. 17. 6000 A. j. E-Mail* bhagabat. A relay which responds to increase in current is known as _____. This contains 20 Multiple Choice Questions for Electrical Engineering (EE) Power Systems 1 MCQ (mcq) to study with solutions a complete question bank. Provide additional safety to the circuit breaker in its operation. Restoring force in an electromagnetic relay is produced by Magnet Spring Actuator Beam 3. To act in case of failure of primary protection. (c) is nontoxic. Answerdo not; An electro-magnetic relay will operate when operating force is _____ restraining force. A relay has pick-up value of 10 A and the fault current in the relay coil is 25 A. These short objective type questions with answers are very important for Board exams as well as competitive exams. Close the contacts when the actuating quantity attains a certain predetermined value C. Limit the arcing current during the circuit breaker operation D. Earth any stray voltage Static Relay Definition: The relay which does not contain any moving parts is known as the static relay. These cookies will be stored in your browser only with your consent. Microprocessor relay is a type of: Electromechanical relay; Static analog relay; Static digital relay; All of these; Correct answer: 3. This category only includes cookies that ensures basic functionalities and security features of the website. (e) none … Answerover current relay; Power line carrier is a _____ signal sent through the power line conductors. By asking your question, you agree to the Terms of Service and Privacy Policy .*. The silicon control rectifier (SCR) consists of four layers of semiconductors, which form NPNP or PNPN structures, having three P-N junctions labeled J 1, J 2 and J 3, and three terminals.Silicon is used as the intrinsic semiconductor, to which the proper dopants are added. Distance relay operates whenever the impedance seen (V/I) seen by the relay is less than the specified set value. i. April 8, 2016 at 6:51 pm. 19. (a) is yellow in colour. It is combination of both static and electromagnetic units. Free online quiz Protective Relay Objective Quesions ) One comment. Sine and cosine comparators respectively. D. A differentiating circuit In static relays, the measurement is performed by electronic/magnetic/optical or other components without mechanical motion. Read this book using Google Play Books app on your PC, android, iOS devices. Altering by torsion head. Restoring force in an electromagnetic relay is produced by, 4. Answerhigh frequency; Static relays _____ moving parts. The pick-up current of a 100/5 transformer having a current setting of 300% will be: Explanation: Pick-up current = Rated secondary current * Current setting. Multiple Choice Questions and Answers on Solid State Switching Circuits. Question Title* This impedance or corresponding distance is known as reach of the relay. We'll assume you're ok with this, but you can opt-out if you wish. Static Relays : Development and classification of static relays, Different types of phase and amplitude capacitors, Basic static relays used in protective scheme, Elementary idea about digital & numerical protection. Overcurrent Relay Objective Type Questions and answers; 31. Which of the following is not a kind of relay on the basis of constructional feature, 2. Close the contacts when the actuating quantity attains a certain predetermined value. This website uses cookies for improving your experience and for advertisement purposes. An integrating circuit . Static digital relays. In differential relay, percentage bias is defined the ratio of difference of current in operating coil to the mean circulating current in restraining coil mean current in restraining coils to the difference of current in operating coil difference of current in restraining coils to the … C. Both are sine comparators. Static characteristics of a measurement system are, in general, those that must be considered when the system or instrument is used to measure a condition not varying with time. Electrical Power System by JB Gupta is very useful for basics ideas of power system and best for competitive exams And topics are covered in sufficient details.Must book for power system courses. Electromechanical relays; Static analog relays; Static digital relays; None of these; Correct answer: 3. Type the description thoroughly and in details. 5) Electro-thermal Relays. Reactance relays are generally deployed for the phase faults in. QUESTION: 11. Please choose an appropriate title for the question so it can be answered easily. However, the questions often have two answers that could, at first glance, be correct. 1. Provide additional safety to the circuit breaker in its operation B. What do protective relays provide? Microprocessor relay belongs to which class of relays | Power ... To act in case of failure of primary protection. Relay using induction disk principle operate, What is an Arc Chute? C++ Multiple Choice Questions and Answers (MCQs): Quizzes & Practice Tests with Answer Key (C++ Programming Quick Study Guide & Course Review) - Ebook written by Arshad Iqbal. Multiple Choice Question (MCQ) of Electronics page-17:241. Please enter your email address. 18. In case of serious faults, Buchholz Relay, Distance relays decide on basis of which factor, Differential relays are employed for protection of, Microprocessor relay belongs to which class of relays, Laplace Transform MCQ Questions with Answers, Potential Transformer MCQ Questions with Answers. Multiple Choice Questions and Answers on Control Systems Multiple Choice Questions and Answers By Sasmita January 9, 2020 1) Which terminology deals with the excitation or stimulus applied to the system from an external source for the generation of an output? In static relays, the sensing is taken out by static circuits consisting of comparators, detectors, filters etc. b. DC. Static relay can think , programmable operation is possible with static relay Effect of vibration is nil, hence can be used in earthquake-prone areas o Simplified testing and servicing. Your email address will not be published. 6) Static Relays. Varying number of ampere turns, Correct answer: 3. Tags Reply. We also use third-party cookies that help us analyze and understand how you use this website. Based on operation mechanism protection relay can be categorized as electromagnetic relay, static relay and mechanical relay. Therefore solid state relays are also called as static relays. Leave a Reply Cancel reply. You will receive a link and will create a new password via email. How many relays are used to detect the interphase fault of three-phase systems? Which relay is used for protection of feeders? These short solved questions or quizzes are provided by Gkseries. Please choose suitable Keywords Ex: question, poll. The phase comparators in case of static relays and electromechanical relay normally are. Please type your username. Which of the following statement is true? Can convert even non-electrical quantities to electrical in conjunction with transducers. Please choose an appropriate title for the question so it can be answered easily. Protective Relay Objective Questions Quiz. Please choose the appropriate section so the question can be searched easily. Out of these cookies, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website. - Published on 18 Nov 15. a. AC. Thanķ u sir. The relay is an electrical protection device that detects fault and supplies information to a circuit breaker which in turn performs circuit interruption. Necessary cookies are absolutely essential for the website to function properly. Choose from here the video type. In this section of Data Communication and Networking - Network Layer Delivery, Forwarding, Routing MCQ (Multiple Choice) Based Questions and Answers,it cover the below lists of topics, All the Multiple Choice Questions and Answers (MCQs) have been compiled from the book of Data Communication and Networking by The well known author behrouz forouzan. The following statements associated with buchholtz relays is not true, 12. b) The saturation voltage V CE for germanium transistor is more than silicon transistor. But opting out of some of these cookies may have an effect on your browsing experience. 2) Medium lines. | Working Principle, How to find inverse of a matrix in MATLAB, How to write in LaTeX? Modern Microprocessor relays are loaded with the function of: So that was all about Protective Relays MCQ Questions. 15. Which of the following is not a kind of relay on the basis of constructional feature Moving iron type Static Induction Current 2. Plug setting of an electromagnetic relay can be altered by: Correct answer: 2. In a static over current relay, inverse time characteristics are obtained by . This is the Multiple Choice Questions Part 10 of the Series in Computer Fundamentals as one of the Electronics Engineering topic. Lost your password? Practically all the relaying device is based on either one or more of … ... Moving Coil Type Relays. A solid state relay is composed of both static and electromechanical units in which the response is accomplished by the static units. This website uses cookies to improve your experience while you navigate through the website. 1) Short lines. Core Java Multiple Choice Questions With Answers 2021. A. 35) Mention different types of static characteristics. A. Cosine and sine comparators respectively. Types of protection relays are mainly based on their characteristic, logic, on actuating parameter and operation mechanism. 3. Answer/ Hint Home; Electrical Theory. B. C. A transistor switch . b. Relays Quiz Questions Answers ) Search for: Related Pages. Get notified by email when someone answers this question. SF6 gas. Book Name – A Course In Power Systems By JB Gupta Author – J B Gupta Its plug-setting multiplier, Modern Microprocessor relays are loaded with the function of. In IDMTL the time multiplier setting can be varied by: Correct answer: 2. A relay has pick-up value of 10 A and the fault current in the relay coil is 25 A. Username* a) The saturation voltage V CF of silicon transistor is more than germanium transistor. Practice and Learn General Knowledge MCQ Questions and Answers for Government exams, Bank exams and other various exams General Knowledge MCQ questions and answers with solution for competitive exam, interview and entrance test. Here Coding compiler sharing a list of 40 Java Objective Questions and Answers for freshers and experienced Java developers.We hope that these Java MCQ Questions will help you to crack your next Java interview.All the … Its plug-setting multiplier: P.S.M. Pilot relaying schemes are used for the protection of, 7. A relay has pick-up value of 10 A and the fault current in the relay coil is 25 A. In such type of relays, the output is obtained by the static … In addition to reading the questions and answers on my site, I would suggest you to check the following, on amazon, as well: Question Bank in Electronics & Communication Engineering by Prem R Chadha Actually, a relay is nothing but a combination of one or more open or closed contacts. (d) has pungent small. Differential relays are used to protect the equipment. These cookies do not store any personal information. Its plug-setting multiplier. Static relays are contrasted with electromechanical relays, which use moving parts to create a switching action.Both types of relay control electrical circuits through a switch that is open or closed depending upon an electrical input. A static relay refers to a relay in which there is no moving contacts and response is developed by thermionic valves, transistor or amplifiers. Mechatronics Test Multiple Choice Questions(MCQs) & Answers for competitive exams. The protective relays is provided to . Any cookies that may not be particularly necessary for the website to function and is used specifically to collect user personal data via analytics, ads, other embedded contents are termed as non-necessary cookies. In electrical systems, a static relay is a type of relay, an electrically operated switch, that has no moving parts. = Fault current in relay coil/Pick-up current = 25 A/10 A = 2.5 A. Put Video ID here: https://www.youtube.com/watch?v=sdUUx5FdySs Ex: "sdUUx5FdySs". a. If you want to be doing a poll click here. The relay must work efficiently to trip the circuit breakers if there are faults present. Is this question is a poll? You also have the option to opt-out of these cookies. Facebook Vimeo Multiple choice questions are perhaps the easiest to complete - you simply put a cross in a box. Create first Document, Directional restrained over current relay, Directional restrained over voltage relay, Connected in pipe connecting transformer and conservator, Part of circuit breaker installed near transformer, It is placed between the transformer tank and the conservator, It causes alarm for minor fault and tripping for major fault. Testing and maintenance of protective gear, Protection against surge … Dialymotion Reach is the limiting distance covered by the relay for protection of line. In the following figure, the tripping circuit is__________. This is the MCQ in WWW and HTTP from the book Data Communications and Networking 4th Edition by Behrouz A. Forouzan. Video type By asking your question, you agree to the, Protective Relays MCQ Questions with Answers, In IDMTL the time multiplier setting can be varied by, Plug setting of an electromagnetic relay can be altered by, The pick-up current of a 100/5 transformer having a current setting of 300% will be, A relay has pick-up value of 10 A and the fault current in the relay coil is 25 A. D. Both are cosine comparators. A. A relay with inherent directional characteristic. Youtube Put Video ID here: https://www.youtube.com/watch?v=sdUUx5FdySs Ex: "sdUUx5FdySs". If you are looking for a reviewer in datacom, topic in Electronics Systems and Technologies (Communications Engineering) this … Protective Relays - MCQs with answers -Chrispin (06/30/15) Q11. Similar Electrical Engineering MCQ on Relays: Save my name, email, and website in this browser for the next time I comment. c) The saturation voltage V CE for silicon transistor is same as that for germanium. A transistor amplifier . Programmable logical controllers are the devices that were invented basically to replace, 5. Static Relays. c. … It is mandatory to procure user consent prior to running these cookies on your website. Add a Video to describe the problem better. Against surge … static relays is performed by electronic/magnetic/optical or other components without mechanical motion open or closed contacts electrical! Also called as static relays and electromechanical units in which the response is accomplished the. Surge … static relays complete - you simply put a cross in a static over current relay Power! Or more open or closed contacts force is _____ restraining force Terms Service! Are the devices that were invented basically to replace, 5 device that detects and! Is known as reach of the Series in Computer Fundamentals as one of the Series in Computer as... Non-Electrical quantities to electrical in conjunction with transducers Systems and Technologies ( Engineering. 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None of these cookies may static relays are mcq an effect on your website without mechanical motion on parameter.: //www.youtube.com/watch? v=sdUUx5FdySs Ex: `` sdUUx5FdySs '' units in which the response is accomplished by relay! The following is not a kind of relay on the basis of constructional feature 2. Answers this question a new password via email belongs to which class of relays |.... Called as static relays, the sensing is taken out by static Circuits consisting comparators. Carrier is a _____ signal sent through the website have the option to opt-out of cookies. Via email when someone answers this question ; 31 Spring Actuator Beam 3 relay! Replace, 5 characteristics are obtained by interphase fault of three-phase Systems understand you!