Module 4 section 4 rectifier inspecttroubleshoot final 10. There are three broad categories of filter which are widely used. A fullwave rectifier with 60hz input must have lowest ripple frequency equal to twice the input frqeuency i. The working of the full wave rectifier with filter is almost similar to that of the half wave rectifier with filter. The output voltage of the power supply is expected remain constant against variations in the load current or variations in input voltage. The circuit diagram below shows how a capacitive filter is can be used to smoothen out a pulsating dc waveform into a constant dc waveform. Rectifier may be defined as an electronic device used to convert ac voltage or current into unidirectional voltage or current.
Peak inverse voltage piv is the maximum possible voltage that occurs across a diode when it is reverse. This is the multiple choice questions in active filters from the book electronic devices electron flow version and conventional current version 8th edition by thomas l. Rectifiers electronic devices and circuits questions and answers. In our previous tutorial, we provided rectifier basic quiz. It is so important to learn the two devices called rectifiers and filters which are used to convert ac to dc. The use of a capacitor filter in a rectifier circuit gives satisfactory performance only when the load a. Semiconductor diode questions and answers pdf free download mcqs interview objective type questions for eee ece electronics students semiconductor diode skip to content engineering interview questions, mcqs,objective questions,class notes,seminor topics,lab viva pdf free download. The whole working is pretty much similar to that of a halfwave rectifier with shunt capacitor explained above.
A capacitor or an inductor can be used as a filter but half wave rectifier with capacitor filter is most commonly used. Lowpass filters allow any input at a frequency below a characteristic frequency to. Free download pdf mcq on converters and rectifiers. Great pdf to practice electrical and electronics fundamentals. Unit ii rectifiers, filters and regulators introduction.
Power supplies have several componets which are at first understood separatly and then they are joined together. Take the test and check out your knowledge about rectifiers. A fullwave rectifier with 60hz input must have lowest ripple frequency equal to twice the input frequency i. Electrical engineering multiple choice questions mcqs. Solved multiple choice questions on computer networking. Rectifiers multiple choice questions and answers mcq. This is the multiple choice questions in power supplies voltage regulators from the book electronic devices and circuit theory 10th edition by robert l. Filters are most often used on singlephase bridge and center tap rectifiers.
Diode rectifiers, filters, and power supplies introduction a power supply takes alternating current or a. Multiple choice questions and answers by sasmita january 9, 2020 multiple choice questions and answers on semiconductor diode in addition to reading the questions and answers on my site, i would suggest you to check the following, on amazon, as well. We have classified each mcq download in 2 categories of difficulty 1 easy. We know that a pulsating dc wave is the output of the rectifier circuit. Mcq topic outline included in ece board exam syllabi. Expression for ripple factor r show that maximum dc power is transferred to the load in a full wave rectifier only when the dynamic resistance of the diode is equal to the load resistance. This is accomplished by using a suitable voltage regulator. We have over 5000 electronics and electrical engineering multiple choice questions mcqs and answers with hints for each question. Most of you find it difficult to answer them correctly.
Gate ece 2019 multiple choice questions for practice free. Top most asked objective questions or mcq on transformer. Set 1 power electronics test this test comprises of 40 questions on basic electrical engineering. Multiple choice questions mcq on magnetism top most asked objective questions or mcq on transformer for. To enhance your knowledge related to this field we made this quiz little bit difficult from the previous one. A rectifier is an electrical device that consists of one or more diodes allowing the flow of. The use of a capacitor filter in a rectifier circuit gives satisfactory performance only when the load. Hydraulics multiple choice questions and answers set 26. The primary crrntribution can be calcvla ted fairly closely fmm an intelligent rough guess at the value of e,, enabling one to calculate the reflected vaiue. This section consists of multiple choice questions quiz on rectifier basics. After searching we came with some more questions based on rectifiers. This is why in reality we use half wave rectifiers with a filter. Power supply filters and regulators power supply filters and regulators.
Ppt rectifiers and filters electrical engineering ee. The use of passive filters to reduce the harmonic content ripple of the. This is an online process where the generated ac is converted into proper regulated dc. Analyzing fullwave rectifiers with capacitor filters. The output of a 60hz fullwave bridge rectifier has a 60 hz ripple. Multiple choice questions and answers on semiconductor. In particle accelerators, rectifiers are used to convert the ac voltage into dc or lowfrequency ac to supply loads like magnets or klystrons. Rectifiers multiple choice questions and answers on rectifiers mcq questions quiz on rectifiers. Semiconductor diodes are active devices which are extremely important for various electrical and electronic circuits.
In order to obtain the constant dc output, we need to filter out the oscillations from the pulsating dc wave. Filters rectification means direct current dc the output current of the halfwave and fullwave rectifier contain large ac components there is ripple voltage across r l i t halfwave rectifier fullwave rectifier. Ee and ece important mcqrectifiers and filters all exam. Solved multiple choice questions on computer networking for other more multiple choice questions visit. Fullwave rectifiers with capacitor filters are, without question, the workhorse and the unsung hero of the modern electronic world and for the gadgets we have come to enjoy. Ideal for students preparing for semester exams, gate, ies, psus, netsetjrf, upsc and other entrance exams. The effects on the rectifier behaviour of the inductive components of the load and of the ac line will be investigated. Latest chemical engineering basics multiple choice questions and. Rectifier applications 2 acknowledgments technical editor william d.
The filter made up of capacitor and resistor is known as capacitor filter. Some loads require high currents, other high voltages and other both high current and high voltage. Diode has unidirectional property hence suitable for rectifier. Dc supply produced by the bridge rectifier is filtered by the filter circuit c1 and r. The circuit diagram of a fullwave rectifier wit capacitor filter is shown below. Free download 100 mcq objective type questions on converters and rectifiers. The device which converts alternating bidirectional voltage to pulsating unidirectional voltage is called rectifier. Mcq in power generators cells and batteries part 8 ece board. The effect of the time offset become negligible if v p 0.
Explain what is piv of a diode in a rectifier circuit. Rectifiers multiple choice questions and answers mcq objective quiz. A filter is a circuit whose transfer function, that is the ratio of its output to its input, depends upon frequency. Diodes are active nonlinear circuit elements with nonlinear voltagecurrent characteristics. Dmrc maintainer iti electronics mechanic hand written imp. The rectifier converts the ac voltage to pulsating dc, which is smoothened by filter circuit. Filters consist of chokes, capacitors, or a combination of capacitors and chokes. If the ripple frequency is 60hz, it means some diodes in the circuit are not working. The use of passive filters to reduce the harmonic content ripple of the voltage and current at the output of the rectifier will be discussed. Latest automobile engineering multiple choice questions and answers pdf free download. And because of it, we have electricity in our house. Rectifiers and converters quiz questions and answers.
So, in this chapter, we will cover rectifier definition, uses, the process of rectification, circuit and types. Ee and ece important mcqrectifiers and filters all. Questions on power semiconductor devices, scrs, three phase ac dc converters, voltage regulators, transistor based devices, choppers, single phase dc ac inverters, pwm. Other rectifier components filters efficiency filters are used to decrease the ac ripple of the dc output, which decreases the operating cost of the rectifier. This section consists of multiple choice questions quiz on rectifier intermediate. Calculate the ripple voltage of a fullwave rectifier with a 75f filter capacitor connected to a load drawing 40 ma. In the circuit diagram, the capacitor c is placed across the load resistor r l. In a rectifier, larger the value of shunt capacitor filter. Kirchhoff s current law states that a net current flow at the junction i.
Filter is a device that converts pulsating output of rectifier into a steady dc level. This is the multiple choice questions in power supplies voltage regulators. Rc t rc t t v v r o r 3 4 4 3 5 these results can be used for very low internal resistance of the transformer much lower than r, but this is not the case for most of the practical circuits. The filter capacitor c is placed across the resistance load rload. The bridge rectifier is preferred to an ordinary two diode full wave rectifier because. That being said, it is surprising and sadly so that a symbolic solution set describing steady. Rectifiers electronic devices and circuits questions and. Electrical4us mcqs are in a wide range of electrical engineering subjects including analog and digital communications, control systems, power electronics, electric circuits, electric machines and much more. Machine design mcq magnetic circuit mcq masonry design mcq network theorems mcq ohms law mcq parallel circuits mcq passive filters mcq polyphase ind motors mcq power generation mcq power plant mcq production engg mcq railway engg mcq rc circuits mcq rcc design mcq rectifiers mcq. Multiple choice questions mcq on network theorem 1. Our ultimate aim is to obtain a constant dc output. Design a fullwave rectifier with an lc filter that can yield dc voltage of 9 v at 100 ma with a maximum ripple of 2%. A simplified analysis and design of the rectifier with. C engines multiple choice questions with answers set 02.