Shunt Reactor Question & Answers June 16, 2023 By Wat Electrical This article lists 25 Shunt Reactor MCQs for engineering students. All the Shunt Reactor Questions & Answers below include a hint and a link to the relevant topic wherever possible. This is helpful for users who are preparing for their exams, interviews, or professionals who would like to brush up on the fundamentals of the Shunt Reactor. High-voltage power systems of transmission must survive variations in load and stabilize their voltages. Two cases can be possible with these reactors one it can be fixed permanently to the line of transmission and the other it can be disconnected or connected to the line based on the load. When we connect a three-phase reactor connected to 400 kV or else above the bus electrical system it compensates the reactive power of the system. Moreover, it controls the dynamic voltages occurred in systems due to rejections in the load. To maintain the impedances of reactors fixed shunt reactors must be gapped cored ones or magnetically-shield air cored ones. Impedance values are maintained at constant to avoid harmonic currents in the reactors generated due to systems overvoltages. Shunt reactors are mainly suffered due to the losses in the core as it is operated in normal conditions. Preventive care must be taken to minimize the losses caused in the core at the time of design. Both power transformers & shunt reactors are similar. Each phase has a winding when compared to power transformers. To enhance the efficiency of power & energy systems by absorbing & compensating the reactive powers in the cables & long higher voltage lines of transmission these reactors are utilized. 1). __________ is similar to power transformers? Series Reactors Shunt Reactors Series Impedance Series Capacitance Hint 2). What is used to stabilize voltages caused due to load variations? Series Reactors Shunt Reactors Series Impedance Series Capacitance Hint 3). How many windings for each phase does a shunt reactor have? Four Three Two One Hint 4). Which power does a shunt reactor absorb? Active Reactive Both DC Hint 5). Shunt reactors __________ power system efficiency? Increase Degrade Decrease Make it to 0 Hint Read More about Shunt Reactor 6). What is connected directly to power lines? Series Reactors Shunt Reactors Series Impedance Series Capacitance Hint 7). Primary AT is _________ to secondary ATs in the shunt reactor? Equal Unequal Distinct Cannot be Equal Hint 8). MVAr is the rating of _________? Series Reactors Shunt Reactors Series Impedance Power Transformer Hint 9). What are the various shunt reactors? Common Variable Static a & b Hint 10). Which reactors can be connected permanently or switch in & out? Common Variable Static Series Hint 11). What maintains voltage during differences in load? Series Reactors Shunt Reactors Series Impedance Series Capacitance Hint 12). In how many types the reactors are classified? Four Three Two One Hint Shunt Reactor MCQs for Exams 13). What is the voltage limit of Dry type Shunt reactors? 35 Kv 345 Kv 34.5Kv 300 Kv Hint 14). Which type of shunt reactor is used indoors or outdoors? Wet Type Dry Type Oil Based Water Based Hint 15). What kind of losses are faced by shunt reactors? Voltage Current Temperature Core Hint 16). Which type of shunt reactor does not have shielding? Wet Type Dry Type Oil Based Water Based Hint 17). Voltage rating limitation is the disadvantage of __________? Wet Type Dry Type Oil Based Water Based Hint 18). How dry type shunt reactors advantageous over oil-type ones? Low Weight Low Cost Low Losses & Less Maintenance All Mentioned Above Hint 19). What are the configurations of oil-immersed type shunt reactors? Coreless Gapped Iron cores a & b Copper Cores Hint 20). Self-cooling applications prefer _______? Wet Type Dry Type Oil Based Water Based Hint 21). Hysteris loss can be prevented in ________? Series Reactors Shunt Reactors Series Impedance Series Capacitance Hint 22). What happens to magnetizing currents in the shunt reactors? Low Reduced Decreased High Hint 23). How voltage levels are transmitted by shunt reactors? Rectifiers Diodes Power Transformer Amplifier Hint 24). Iron core is absent in _______? Wet Type Dry Type Oil Based Water Based Hint 25). What is connected to transformer's tertiary windings? Series Reactors Shunt Reactors Series Impedance Series Capacitance Hint Time's up
