Jan 21, 2018· With the advent of AC current and hence alternator, dc generators have got a question mark on their usage. Because for DC application nowadays rectifiers and filters are used which are cheap and economical. But that doesn't make DC generator extinct. Certain fields have great importance of DC Generators.
what is the function of a commutator in a dc generator?.. Answer / subhajit gorain Its function is to collection of current from armeture conductors,sent it to the carbon brush and then it convert the alternating current to direct it is called a macanical rectifire.
DC Generator Characteristics. In general, two characteristics specify the steadystate performance of a DC generators: characteristics: generated voltage versus field current at constant speed. characteristic: terminal voltage versus load current at constant speed.
Aug 15, 2008· That is DC, direct current instead of AC, alternating current. Sometimes AC generators may be called an Alternator. A shunt generator simply means it is self excited, that is the field magnet is connected across the generator's output, rather than having a separate DC generator for the field.
DC Generator Objective Questions and Answer DC Generator Multiple Choice Questions and Answers MCQ quiz on DC Generator multiple choice questions and answers on DC Generator MCQ questions quiz on DC Generator objectives questions with answer test pdf.
These are some multiple choice questions on dc generators which has scope to ask in competitive exams. 1) The principle of dynamically induced emf is utilised in A) Transformer B) choke C) generator D) thermocouple Ans: C 2) The field coils of a dc generator are usually made of A) Mica B) Copper
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About This Quiz Worksheet. This quiz and worksheet can help you gauge your knowledge of generators and electric motors and how they operate. Topics you'll need to .
Module 6 DC Motors This module describes the types of DC motors and includes discussions of speed control, applications, and load characteristics. Volume 3 of 4 Module 7 Basic AC Theory This module describes the basic concepts of alternating current (AC) electrical circuits and .
Jan 15, 2011· The emf produced in the dc generator is dynamically induced emf. This can be explained with the help of faradays law electro magnetic induction. 4. Answer (a). DC generator works on the principle of faraday's law of electro magnetic induction 7. Answer (b). Fleming's left hand rule is applicable for DC Motors.
GENERATORS Electrical Engineering Multiple choice Questions and Answer pdf free download interview questions objective type questions lab viva. Skip to content Engineering interview questions,Mcqs,Objective Questions,Class Notes,Seminor topics,Lab Viva Pdf free download.
Mar 23, 2019· Electrical Engineering Objective Questions MCQ. We have covered all these topics in the section of MCQs such as Basic Electrical, Circuit Theories, Electrical Laws, Materials, Batteries, Illumination, Generation, Transmission Distribution, Switchgear, Protection Measurement, Control System, Utilities Safety, Transformer, Induction Motor DC Motor,...
May 10, 2018· Basic Parts of a DC Generator. As one of the most influential scientists of the 19th century, Michael Faraday took inspiration from the work of Danish physicist Hans Christian Oersted, who realized in 1820 that an electric current could be changed into a magnetic force. This discovery led to Faraday's Law and the first electromagnetic direct current...
DC motors are of two types: one is brushed dc motor and the other one is brushless dc motor. Brushless dc motors are mainly used in highspeed applications such as multicopters (eg: quadcopters). The purpose of brushes in a dc generator is to ensure electrical connections between the rotating commutator and stationary external load circuit.
Top 50 Electrical Cables Multiple Choice Questions and Answers. December 29, 2016. Electrical Machines Top 100 Electrical Machines Multiple Choice Questions. November 19, 2016. ... DC Generators Electrical Engineering Objective Questions – Part 1 These are very helpful to my preparation. Thanks...
DC Motor or Direct Current Motor Multiple Choice Questions and Answers; 16. A DC motor can be looked upon as a DC generator with the power flow ..... A. Reduced . B. Reversed . .
three basic classification DC generators (1) permanentmagnet field (2) separatelyexcited field and (3) selfexcited field. 1) permanentmagnet field permanentmagnet DC machines are widely found in a wide variety of lowpower applications. The field winding is replaced by a permanent magnet, resulting in simpler construction.
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