Cylindrical rotor alternators have mcq
WebIn this MCQ you can learn and practice Cylindrical Rotor Alternator objective quiz questions to test your knowledge on electrical machines. … WebSHOW ANSWER. 25. If the driving power from the prime-mover driving an alternator is lost but the alternator remains connected to the supply network and field supply is on, then the alternator will. (a) behave as an induction motor but will rotate in an opposite direction. (b) behave as a synchronous motor and will rotate in the same direction.
Cylindrical rotor alternators have mcq
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WebThe rotor is the rotating part of the alternator. It is made in a cylindrical shape that has copper windings also known as field winding. The field windings are electromagnets that generate the necessary rotating … WebDec 10, 2024 · Rotor. There are two types of rotor, smooth cylindrical type and salient pole type. Smooth Cylindrical type alternator. The rotor consists of a smooth solid steel cylinder, having a number of slots along its outer periphery for hosting the field coils. They do not have projected poles, instead, it has a uniform length in all directions, giving a …
Webused for low-speed alternators. Used for high-speed turbo-alternators. Has projecting poles. Has no projecting poles. Needs damper windings. Do not need damper windings. … WebThe below list provides all the multiple-choice questions related to the electrical alternators. Answers are available at the bottom of the article. 1. If the voltage of one of …
WebMaximum power in cylinder rotor alternator occurs at load angle of __________ a) 90 degree b) 45 degree c) less than 90 degree d) 180 degree View Answer 10. A synchronous generator is operating with a Ef=1.40pu. This machine having Xs of 1.2pu, is delivering a synchronous power of 0.5pu to the bus. WebFeb 24, 2012 · Now let us derive various equations for the power flow the cylindrical rotor alternator. In order to derive various power equation for an alternator let us substitute voltage source E 1 equal to the excitation voltage (E f), voltage source E 2 equals to the terminal voltage (V t), inductive impedance of the above circuit equals to synchronous …
WebAug 19, 2024 · Home alternator MCQ Alternator Objective Questions With Explanation Part-1 August 19, 2024 1. The speed of a 4-pole 60 Hz synchronous machine will be A. …
WebJun 6, 2024 · Show Explanation Ques 52. Two alternators rated 40 MVA and 60 MVA respectively are working in parallel and supplying a total load of 80 MW. Speed regulation of both the alternator is 5%. The load sharing … imrf retiree continuationWebThe field windings of cylindrical type rotor are connected in series to the slip rings through which they are excited by the DC exciter. The top portion of the slot is covered with the … lithium otc vs prescriptionWebSolutions for Chapter 6 Problem 3MCQ: The rotors preferred for alternators coupled to hydraulic turbines are(a) salient pole type(b) cylindrical rotor type(c) solid rotor type(d) … lithium other drug namesWebMar 6, 2024 · Smooth Cylindrical type rotor is generally used for high-speed alternators or turbo-alternators. This is because: These rotors have small diameter and long axial … lithium otc supplementWebSep 30, 2024 · This is the Multiple Choice Questions Part 2 of the Series in AC Generators as one of the Electrical Engineering topic. ... Turbo-alternators have rotors of. A. small diameter and long axial length ... Solution: 73. The rotor of a turbo-alternator is made cylindrical in order to reduce _____. A. eddy current loss. B. hysteresis loss. C. … imrf register member accessWebAug 3, 2024 · Difference between Cylindrical Rotor and Salient Pole Rotor Synchronous Generator - A synchronous generator, also called alternator, is a most widely used electric generator that produces alternating current supply. It is the main component of every power generating station. Based on the rotor construction, the synchronous generators are of … lithium osteoporosisWebNov 25, 2024 · In synchronous generators or alternator, generally salient-pole type of rotors is driven by hydro-turbines and cylindrical type rotors are driven by steam … lithium otc drug interactions