Cylindrical rotor alternators have mcq

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August undefined, 2024

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 … WebThe 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 …

Alternator MCQ Synchronous Generator MCQ Page 14 of 18

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. … WebFeb 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 … how to sell ikea furniture online

100 MCQ of Synchronous Generator or Alternator with ... - Course …

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. Web26. 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) … 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 … how to sell ideas and make money

Cylindrical Rotor Alternator Questions - Electrical …

MCQ in AC Generators Part 2 REE Board Exam

WebIn 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 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 … how to sell ideas to companieshttp://www.electricalunits.com/mcq-alternator-and-synchronous-motors-page-3/ how to sell images

"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 … " - Cylindrical rotor alternators have mcq

Cylindrical rotor alternators have mcq

Synchronous Machines - Electrical Engineering (MCQ) questions …

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. WebJun 12, 2015 · Smooth Cylindrical Type Rotor - Synchronous Generator - MCQs with answers Q1. The diameter and axial length of rotors of smooth cylindrical type rotors are a. Small diameter, small axial length b. Large diameter, large axial length c. Large diameter, small axial length d. Small diameter, large axial length View Answer / Hide Answer Q2.

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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 … 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 …

WebNov 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 … 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. 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 …

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 … WebJun 22, 2024 · A simple brief definition and explanation. The main story is on the way: salient pole vs cylindrical pole. Cylindrical (non-salient) pole or round-rotor or a drum rotor usually can be found in higher speed …

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. …

WebIn this MCQ you can learn and practice Cylindrical Rotor Alternator objective quiz questions to test your knowledge on electrical machines. … how to sell hp laptopWebAlternators 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. how to sell in aut how to sell in a saturated marketWebDec 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 … how to sell in demon fallWeb20. The synchronous motor meets increase in load by taking more armature current as. (a) the rotor pole falls back relative to the stator pole causing an increase in motor current. (b) the back emf decreases causing an increase in motor current. (c) rotating field is strengthened causing an increase in motor current. how to sell in amazon from kosovoWebJun 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 … how to sell in blox fruitsWebOn 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 … how to sell in an email