Cylindrical rotor alternators have mcq

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. 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.

MCQ in AC Generators Part 2 REE Board Exam

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 … 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 … the park bar glasgow https://login-informatica.com

Difference between salient pole and cylindrical …

WebMCQs on Synchronous Motor 1. Synchronous motors generally have salient pole rotor smooth cylindrical rotor either the salient pole rotor or smooth cylindrical rotor none of the above Correct Answer 2. Number of slip rings in a 3-phase synchronous motor will be 0 1 2 3 or 4 Correct Answer 3. WebJun 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 … 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. … the park bar glasgow music

Cylindrical Rotor Alternator Questions - Electrical …

Category:Multiple Choice Question (MCQ) of Alternator and Synchronous …

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Cylindrical rotor alternators have mcq

MCQs on Synchronous Motor - Electrically4U

Web100+ Electrical MCQ Questions in Induction Motor 101.In a 3-phase squirrel cage induction motor, skewing of rotor slots reduces a) parasitic torque and noise but increases pull-out torque b) parasitic torque and noise but increases starting torque c)noise but increases pull-out torque and parasitic torque 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 …

Cylindrical rotor alternators have mcq

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WebSolutions 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) … 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 …

WebAnswer Explanation 2) The open circuit voltage and short circuit current of a 3 phase, star connected alternator are 1050 V and 250 A respectively. Its field current is 12 A. Then the synchronous impedance of alternator will be a. 1.34 ohm b. 1.69 ohm c. 2.42 ohm d. 2.85 ohm Answer Explanation 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. …

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. 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 …

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 …

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 … the park baybrookWebIn this MCQ you can learn and practice Cylindrical Rotor Alternator objective quiz questions to test your knowledge on electrical machines. … the park beckWebDec 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 … the park bar atlantaWebCylindrical 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 … the park. baybrookWeb20. 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. the park bar austinWebJun 12, 2015 · Salient Pole Type Rotor - Synchronous Generator - MCQs with answers Q1. In synchronous machine, poles are made up of thick steel laminations. In salient pole type rotor a. Poles are projected out from the surface of the rotor b. The unslotted portions of the cylinder itself acts as the poles c. Both (a) and (b) d. None of the above shuttleroid tcgWebFeb 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 … shuttleroid yugioh