# distance relay mcq

There is one type of relay which functions depending upon the distance of fault in the line. 2. It is nondirectional and is used primarily as a fault detector. Multiple Choice Question (MCQ) of Protective Relays page-1. (b) overloads. c) 110 kV – 150 kV. d) 150kV – 220kV . 1.A single phasing relay can be used with. In the same manner, Setting for Zone-2 = (150% of 61) × CT/PT ratio = 1.5×61×0.28 = 25.62 ohm. « Back CONTENTS Next » 1. More specifically, the relay operates depending upon the impedance between the point of fault and the point where relay is installed. b) 66 kV – 100 kV. It is used for the protection of a transmission line. c) impedance relay. IDMT relays are used to protect the power transformers against (a) external short-circuits. 24. Distance relays are generally-- (a) impedance relays (b) reactance relays (c) split-phase relays (d) none of the above . a) 33 kV – 66 kV. The satellite that is used as a relay to extend communication distance is called as _____ a) Relay satellites b) Communication satellites c) Repeater satellites … Distance relay operates whenever the impedance seen (V/I) seen by the relay is less than the specified set value. (d) Directional relay. 1. A. (c) internal short-circuits. For complete protection of a three-phase transmission line, we require . Which of the following relay is used to detect and protect internal fault of a transformer? Which means if the distance Relay senses Impedance less than 13.66 Ohm then it will pick-up for Zone-1. The impedance relay has a circular characteristic centered at the origin of the R-X diagram. These relays are known as distance relay or impedance relay. Distance relays are generally. (b) Bucholoz relay. Q7. (c) IDMT relay. This impedance or corresponding distance is known as reach of the relay. It is the tripping relay in pilot schemes and as the backup relay in step distance schemes. (a) Differential relay. Explanation:-Distance relay: A relay which measures impedance or a component of the impedance at the relay location is known as a distance relay. Distance Relay. ... Power Electronics mcq power electronics multiple choice questions - 1. Which means if the distance Relay senses Impedance less than 25.62 Ohm then it will pick-up for Zone-2. The pickup value is d) no relay is used . Three phase and three earth fault relays a) Impedance type b) MHO type c) Reactance type d) All of these Ans: (b) 7. Transmission Line Objective Type Questions and answers; 31. (d) external short-circuits and overloads. A relay used on long transmission lines is. Admittance Relay. Buchholz relay is used to protect against. a) 1ɸ motor b) 2 r ɸ motor c) 3 ɸ motor d) All of these Ans: (c) 2. This set of Avionics Multiple Choice Questions & Answers (MCQs) focuses on “Satellite Communication Systems”. a) mho’s relay. The admittance relay is the most commonly used distance relay. 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