Cylindrical rotor alternators have mcq

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August undefined, 2024

WebMar 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 … WebAlternator MCQ Synchronous Generator MCQ 151. Consider the following statements Salient pole alternators have small diameters and large axial lengths. Cylindrical rotor alternators have a distributed winding. Cylindrical rotor alternators are wound for …

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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. WebA cylindrical rotor alternator has a comparatively long axial length and a small diameter. The other names of the cylindrical rotor alternators are turbo-alternators or turbo-generators. They are always installed in a horizontal configuration. The followings are the features of the cylindrical rotor. irth communications llc

[Solved] The cylindrical rotor type alternators are driven by:

WebAlternators can be classified into the following two types according to its rotor construction Smooth cylindrical type alternator Salient pole alternator 5. Why do cylindrical Alternators operate with steam turbines? Steam turbines are found to operate at fairly good efficiency only at high speeds. WebStudy with Quizlet and memorize flashcards containing terms like As resistive load increases on an alternator, what must happen to maintain voltage and frequency at the terminals?, The voltage induced in an ac generator depends upon; Field flux, and the speed of the Rotor. True or False, In an alternator, how do salient pole rotors compare to … 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 … irth handbags

Smooth Cylindrical Type Rotor - Synchronous Generator - MCQs …

Cylindrical rotor alternators have mcq

Alternator Objective Questions With Explanation Part-1 - Electrical …

WebThis type of Rotor is used for steam-driven alternator i.e turbo alternator which runs at very high speed. The Rotor is made up of smooth solid forgings of alloy steel cylinder having the number of slots along the outer periphery. The field windings of cylindrical type rotor are connected in series to the slip rings through which they are excited by the DC … WebFeb 4, 2024 · The salient pole and cylindrical or round rotor are two types of synchronous machines. In an alternator or synchronous generator various losses occur such as …

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WebIn this MCQ you can learn and practice Cylindrical Rotor Alternator objective quiz questions to test your knowledge on electrical machines. … WebCylindrical rotor alternators have a) Large length to diameter ratio b) Small length to diameter ratio c) Vertical configuration d) None of these Ans: (a) 25. In an alternator, the …

WebAug 3, 2024 · Difference between Cylindrical Rotor and Salient Pole Rotor Synchronous Generator - A synchronous generator, also called alternator, is a most widely used … WebFeb 24, 2012 · The cylindrical rotor alternators are generally designed for 2-pole type giving very high speed of Or 4-pole type running at a speed of Where, f is the frequency …

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 … 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. …

WebSep 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. …

WebJun 6, 2024 · An alternator is generating power at 210 V per phase while running at 1500 RPM. If the speed of an alternator drops to 1000 rpm the generated voltage per phase will be. Ques.23. An alternator is said to … portal softproliteWeb26. In turbo-alternators, smooth cylindrical type rotors used have long axial length because (a) it gives smooth running of the rotor (b) it reduces windage loss (c) … irth hostWebJun 6, 2024 · A cylindrical synchronous machine connected to an infinite bus power will deliver maximum power at a power angle of δ = 0° δ = 90° δ = 45° δ = 30° Show Explanation Ques 64. The maximum power developed in a cylindrical synchronous machine depends on the Load angle Synchronous reactance Excitation Both 2 and 3 … portal softnewWebOn the other hand, cylindrical rotors are used for turbo alternators running at high speed as 3600 RPM or 1800 RPM. ④ Alternators are also called Synchronous generators … portal software incWebIn alternators, cylindrical pole type rotors are generally used with prime movers of a) High speed b) Low speed c) Medium speed d) Both low and high speed Ans: (a) 9. An alternator is said to be overexcited when it is operating at a) Unity power factor b) Leading power factor c) Lagging power factor d) Either lagging or leading power factor portal snapchatWebAug 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. 1800 r.p.m. B. 2400 r.p.m. C. 3000 r.p.m. D. 3600 r.p.m. Answer: A. 1800 r.p.m. Explanation: In a synchronous machine, Frequency, fs = 60 Hz Number of poles = 4 … irth designs hastingsWebSolutions 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) … irth one call