Cylindrical rotor alternators have mcq

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August undefined, 2024

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 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 …

MCQs on Synchronous Motor - Electrically4U

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 … 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. binaural pearl jam track list

Difference between salient pole and cylindrical …

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) … Web20. 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. 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 … binaural refers to

Synchronous Generator-Construction and Working Principle

Alternator MCQ - Your Electrical Guide

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 … 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. binaural room scanningWebFeb 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 … cyril \u0026 methodius church

"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. … " - Cylindrical rotor alternators have mcq

Cylindrical rotor alternators have mcq

Cylindrical Pole Type MCQ [Free PDF] - Objective …

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 … 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) …

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WebAug 3, 2024 · Difference between Cylindrical Rotor and Salient Pole Rotor Synchronous Generator - A synchronous generator, also called alternator, is a most widely used … WebAug 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 …

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 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.

WebIn this MCQ you can learn and practice Cylindrical Rotor Alternator objective quiz questions to test your knowledge on electrical machines. … 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

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 … cyril\u0027s confectionaryWebStudy 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 … cyril\u0027s christologyhttp://www.electricalunits.com/mcq-alternator-and-synchronous-motors-page-3/ cyril\\u0027s fish houseWebA 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. cyril\u0027s food company - florida cyril\\u0027s food company - floridaWebJun 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 cyril\\u0027s food companyWebAug 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. … cyril\u0027s fish house