Cylindrical rotor alternators have mcq
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. 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 …
Cylindrical rotor alternators have mcq
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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 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 …
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 … 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.
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 … 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.
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.
http://www.electricalunits.com/mcq-alternator-and-synchronous-motors-page-3/ simple wooden casketWebJun 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 … simple wooden box instructionsWebThis 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 … ray liotta\u0027s character in goodfellasWebJun 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 ray liotta\u0027s wifeWebSolutions 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) … simple wooden bow and arrowWebJun 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 … ray liotta tv show shades of blue cancelledWebused 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. … simple wooden carport