(b) load is highly capacitive. Most of the Alternators have rotating field and stationary armature. Your email address will not be published. (d) voltage regulation. How to Calculate the Battery Charging Time & Battery Charging Current – Example. Please consider supporting us by disabling your ad blocker. They must run at a speed which varies with frequency. (b) turbo generator. 8. « BACK                                        NEXT », Also Read :Why all the voltage levels are multiples of 11 kV? 1980-2018 General knowledge questions and answers for all competitive exams like UPSC, Bank PO, CDS, CMAT, SSC CGL etc. For a three-phase, sixteen pole star connected alternator with 144 slots and 12 conductors per slot, if flux per pole is 0.03 Wb and speed is 400 RPM, the line induced EMF and generated frequency is —————– respectively, Number of slots per pole per phase, m = 3, Slot angle, α = 360/144 degree mechanical = 20 degree electrical, Distribution Factor, KD = 0.5 / 0.52 = 0.96, Number of turns per phase, Tph = ( 144 x 12 ) / ( 2 x 3 ) = 288, Generated frequency, f = NP/120 = 53.33 Hz, Hence, induced EMF, Eph = 4.44Kc KDfT phφ = 1943.53 Volts, The line voltage, VL = √3 Eph = 3366.29 Volts, 9. (c) excitation. A text has a link within it, is a hypertext. In the following quiz, mcq’s questions related to the JavaScript are included. Advanced database MCQs 1. Tally Accounting Package is hold a very good value in technical aptitudes. Start You are called to assist with the emergency care of a 45 year-old gentleman who underwent an urgent surgical tracheostomy two days previously for airway obstruction due to laryngeal cancer. 38. They must run at a constant speed irrespective of desired frequency. Which type of backup is used to back up only the files that have changed since the last full backup? Yes, some files are offered to download free a. description c b. name d. The downloads are available as PDF files c. alt d. id 39. To do this. Answer: Option D Explanation : No answer description available for this question. (c) stability. The pitch factor, Kc is the ratio of the voltage generated in the short pitch coil to the voltage generated in the full pitch coil. 25% Off on Electrical Engineering Shirts. Who we are? Ctrl + D shortcut key in Excel will A) Open the font dialog box B) Apply double underline for the active cell C) Fill down in the selection D) None of above 26. Alternators can be connected in parallel with one another with common bus bars, a process known as Synchronization. In an alternator, potier triangle is used to determine (a) power factor. 15. 11. For a three phase, star connected alternator rated 1500 KVA, 13000 V, if the armature effective resistance is 1.6 Ohms and the synchronous reactance is 32 Ohms respectively, the percentage regulation for a load of 1275kW at 0.8 leading power factor is————–, Three phase power = 1275 kW = √3 VLILcosφ, Therefore, line current, IL = 70.78 Amperes, Phase voltage, Vph = VL / √3 = 7505.55 Volts, No load voltage for leading power factor of 0.8 is, Ep2 = (Vpcosφ + ILRa)2 + (-VPsinφ + ILXs)2 , or EP = 6514.32 Volts, Therefore, Percentage regulation = ((EP – Vph)/EP) x 100 = -13.20%, 11. Get Free Android App | Download Electrical Technology App Now! Software system that is designed to search for information on the World Wide Web. Question 2. Since number of poles is usually fixed for an alternator, the speed of the rotor must be in synchronization with the desired speed. A. Learn vocabulary, terms, and more with flashcards, games, and other study tools. 2. Use the Default property 3. You have to select the right answer to a question. Move to the Tell me or Search field on the Ribbon and type a search term for assistance or Help content.. Alt+Q, then enter the search term. 8-2. In the array, the elements are numbered from … a) 1 to 10 b) 1 to 10 c) 5 to 10 d) 0 to 9 2. Press. (Cos φ) of the load. (b) changing of prime cover speed. MS Excel MCQ Quiz & Online Test: Below is few MS Excel MCQ test that checks your basic knowledge of MS Excel. 14. This QC online test is useful for beginners, experienced candidates, testers preparing for job interview and university exams. Hence, frequency, f = PN /120. Let us consider an Alternator with P number of poles on the rotor revolving with N revolutions per minute speed. Hence these machines have large diameters and short axial lengths. The Chapters of Multiple Choice Questions (MCQs) on DC Machines. cd home to get back to your home-directory? Bitmap checkpoint 4. This is known as a short pitch coil. Select your answer and check with given correct answer. Partial C. Incremental D. Differential. When the load connected to the Alternator varies during the latter’s operation, the generated voltage also varies. MCQ is listed in the World's largest and most authoritative dictionary database of abbreviations and acronyms The Free Dictionary 2. This quiz provides you the multiple choice questions of C language. So, we have covered all the possible sections of dc machines. As speed is low, the desired frequency is obtained by having larger number of poles. What is the difference between Earthing and Grounding. Our website is made possible by displaying online advertisements to our visitors. Take this quiz to see how many 'Word' keyboard shortcuts you can remember. 189. 7. Therefore, Number of cycles per second = PN /120, However, number of cycles per second is the frequency of generated voltage. 1. asked by varuWhat is the difference between Earthing and Grounding? Alternators cannot be connected in parallel with one another. What is used to search files for specified words or patterns? An alternator is also called (a) synchronous generator. For a short pitch coil, the pitch factor is————. Three phase alternators are generally (a) star connected. (d) HP. b. (Power Factor=Cos φ) of the load. C. Search Videos. They must run at a speed equal to the desired frequency. (c) open circuited. Contra Journal Receipt Payment ⇒ Which shortcut key is pressed to create a new Ledger during voucher entry? If the excitation of two alternators operating in parallel is changed, this result change in (a) generated voltage. 4. Active power of an alternator can be varied by (a) changing field excitation. Start studying Chapter 9: MCQ. The polarity of the induced EMF depends upon the polarity of the magnetic poles which cut through the conductor. Which option used to Delete selected Pages? False Right Answer: B Que.18. d. The relationships between statements. In large alternators damper winding is used to […] Alternators are rated in (a) kW. Answer: Option D Explanation : No answer description available for this question. Try to answer them all up to your best knowledge and find out how much you actually know about its usage and various functions. A. JavaScript Quiz Online Test Mcqs Questions with Answers … Maths MCQs for Class 12 Chapter Wise with Answers PDF Download was Prepared Based on Latest Exam Pattern. 5. Directed by John Sturges.Written by Lawrence Roman. 8-3. This is because of some of the advantages as given below. (d) same as normal condition. Overloaded functions are … a) functions having same variables b) many… ASCII code is used torepresent data internally in micro-computers. Less B. Srch C. %src D. Grep Right Answer: D Que.17. On the other hand, cylindrical rotors are used for turbo alternators running at high speed as 3600 RPM or 1800 RPM. MS Office Shortcuts Multiple Choice Questions and Answers, MS Office Shortcuts MCQ, MS Office Shortcuts Objective Questions ... D. Alt+Ctrl+C - Answer&Explanation. (b) synchronous impedance. The Following Section consists Multiple Choice Questions on Alternating Current vs Direct Current. (b) connected load is fully resistive. (d) input mechanical power is increased. Open the Home tab and format text and numbers and use the Find tool.. Alt+H. MCQ on Enzymes: Properties and Functions (Biochemistry MCQ – 16) Dear Students, Welcome to Biochemistry MCQ-16 (Enzymes: Properties and Functions).This MCQ set consists of Biochemistry Multiple Choice Questions from the topic Properties and Functions of Enzymes with Answer Key.These questions can be used for the preparation of all the competitive examinations in Biology / Life … Under short-circuit conditions, the power factor of an alternator is (a) unity. ALT Classes is an initiative of Pankaj Garg. Search Documents. Hence for a short pitch coil, Kc is less than 1. But the alternator conductors are calculated for a definite current and the insulation at magnetic system are designed for a definite voltage independent of p.f. True B. 188. (c) armature reaction. Take the Quiz and improve your overall Engineering. For example, we have covered, the working principle … (a) Weighted (b) Unweighted (c) Composite (d) Value index MCQ No 5.4 Index numbers can be used for: (a) Forecasting (b) Fixed prices (c) Different prices (d) Constant prices MCQ No 5.5 Index for base period is always taken as: (a) 100 (b) One (c) 200 (d) Zero MCQ No 5.6 When the prices of rice are to be compared, we compute: 4. Question bank and quiz comprising sample code, examples and theory based questions from tutorials, lecture notes and concepts of QC as asked by different companies like … (c) changing the load. (d) generator. Step by Step Procedure with Solved Example, Synchronous Generator and Alternator Formulas & Equations, The stationary armature can be easily insulated, Stationary armature windings are safe from vibration and centrifugal forces and can be braced against high electromagnetic force. Photoshop (MCQ) SET-1 1.The typical size for a graphic design is measured in __________. 4 A graph is a collection of nodes, called ..... And line segments called arcs or ..... that connect pair of nodes. 3. Microprocess Microconroller mcq 1000+ 1. Your email address will not be published. Open the File page and use Backstage view.. Alt+F. (b) kVAR. Which interrupt has the highest priority?a) INTR b) TRAP c) RST6.52. You may also read • Why all the voltage levels are multiples of 11 kV? MCQ Questions for Class 8 Science with Answers were prepared based on the latest exam pattern. (c) provide starting torque. The keystrokes Ctrl + I is used to In large alternators damper winding is used to improve (a) speed. B. (b) harmonics. 4. D. An elements with no comment. A. Moves the cursor one line down, 3) c. Moves the cursor one page down, 4) d. Moves the cursor one screen down, 5) NULL More C Programming Quizzes. A) Element Menu> Insert Pages B) Layout Menu> Remove Pages C) View Menu> Insert Pages D) Utilities Menu>Plug-ins> Insert Pages 7. Search engine are used to _____. Most of the alternators have rotating field and stationary armature. View Answer. (b) kVAR. 1) a. Answer – – D Description – Differential backups are used to back up files that have changed since the last full backup. Alternators are rated in (a) kW. Required fields are marked *, All about Electrical & Electronics Engineering & Technology. Which attribute is used with img tag to display the text if image could not load in browser? (adsbygoogle=window.adsbygoogle||[]).push({}); Why all the voltage levels are multiples of 11 kV? It is always 180 degrees electrical regardless of the number of poles in the machine. asked by Guma. d) Atropine is indicated if there is no response after the third shock: TRUE/FALSE. What is the function of a choke in tube light? (c) back emf. D) Insert the symbol or type the text in a Word document first. 13. (d) reactive power. Alt Text (also known as alternative text or alt attribute) is (c) alternator is under excitation. The symbolization for a conjunction is... a. p → q b. p & q c. p v q d. ~ p. In a disjunction, even if one of the statements is false, the whole disjunction is still... a. (d) short circuited. For those who have to use Fn key for typing the buttons, you will have to hold alt and Fn both while typing in the number. C) Alt + Shift+F6 D) Shift + F4 5. We are providing here the MCQ questions from Class 10 Maths NCERT Chapter 14 - Statistics. This page illustrates how MCQ is used in messaging and chat forums, in addition to social networking software like VK, Instagram, Whatsapp, and Snapchat. Synchronous generator will develope maximum power when (a) power angle is equal to internal angle. If you want to give any job pre test or you have been called after pass the written test successfully then you must prepare Microsoft office multiple choice questions especially Microsoft Word. Alternators are also called Synchronous generators because. McQ is a 1974 neo-noir crime drama film about Seattle police lieutenant Lon McHugh, aka McQ, who is drawn into a conspiracy involving the shooting of several police officers when his partner is killed and an attempt is made on his own life by a professional hitman.. (c) asynchronous generator. 6. (c) asynchronous generator. Up tp 93% Off - Launching Official Electrical Technology Store - Shop Now! The keystrokes Ctrl + I is used to (b) reduce the armature reaction effect. (d) short circuited. Shift F12 , 3) c. Alt + F12 , 4) d. Ctrl + F12 False Right Answer: A (d) all of the above. A markup language is a computer language that is used to apply layout and formatting conventions to a text document. How To Calculate Your Electricity Bill. 3. Kva.. ya que se determina es la potencia aparente a suministrar. Looking for online definition of MCQ or what MCQ stands for? A. alt attribute specifies an alternate text for an image B. alt attribute specifies an alternate link for an image C. alt attribute specifies an alternate image for an image D. alt attribute specifies an alternate source for an image. Standard checkpoint ANSWER: 2 6. MS Word Multiple Choice Questions and Answers set 14, MS Word MCQs, MS Word Objective Questions, MS Word Quiz, MS Word MCQ's with Answers. Alt + A Shift + A ⇒ Where do we record transactions of salary, rent or interest paid? Internet MCQ : Search Engine Basics (Multiple Choice Questions) Question 1. This MS Excel Test contains around 20 questions of multiple choice with 4 options. (c) kVA. (c) phase sequence. Different types of questions provided here can be used … (c) rotor current. Follow, © Copyright 2020, All Rights Reserved 2012-2020 by. How to Calculate/Find the Rating of Transformer in kVA (Single Phase and Three Phase)? The alanine aminotransferase (ALT) test is typically used to detect liver injury. Press and hold the alt key while you type using the numeric pad in the numerical sequence. Easy & Simple Explanation. For a single layer, 36 slot, four pole, four phase stator winding, the value of distribution factor is——–, Number of poles per slot per pole, m = 12/4 = 3, Slot angle, α = 360/36 = 10 degree mechanical = 20 degree electrical, Substituting the corresponding values, we get: KD = 0.5/0.52 = 0.96, 7. What is the short cut key to open the Open dialog box in ms word? What is difference between real power and apparent power ? Pole pitch is the angular distance between two poles on a machine. A debit note is a document made out when goods are (A) returned (B) overcharged (C)sold (D) undercharged 3. We depends on ad revenue to keep creating quality content for you to learn and enjoy for free. We have provided Crop Production and Management Class 8 Science MCQs Questions with Answers to help students understand the concept very well. Free PDF Download of CBSE Maths Multiple Choice Questions for Class 12 with Answers Chapter 5 Continuity and Differentiability. Since EMF generated in the coil is always less than the EMF generated in the pole or full pitched coil. 2. Number of slip rings required to provide direct current to the rotating field is less compared to number of slip rings required to provide direct current to the rotating armature. 10. (c) back emf. asked by adminWhy Motor rated in kW instead of kVA? QC objective type questions with answers (MCQs) for interview and placement tests. HyperText simply means "Text within Text." Select New AutoCorrect Entry and then click OK. 3. However, two sides of a coil are not always corresponding points under the adjacent poles and hence the coil has a span or pitch less than 180 degrees. (b) delta connected. Which of the following books of original entry should be used to record credit sales? EE-Tools, Instruments, Devices, Components & Measurements. (d) generator. ... D. Alt + D. Answer & Solution Discuss in Board Save for Later 9. Can I download the MCQ banks in MCQSets.com? For Mac users, simply use the option key instead of the alt key. Limited Edition... Book Now Here. We get list of sites after typing a word in search bar called _____. ... ASCII is a code which converts characters – letters, digits, punctuationsand control characters such as Alt, Tab etc – into numeral form. The power factor of an alternator is controlled by its (a) speed. The full load terminal voltage of an alternator is greater than no load terminal voltage when (a) load is highly inducted. (b) frequency. What does MCQ stand for in text In sum, MCQ is an acronym or abbreviation word that is defined in simple language. Moves the cursor one paragraph down, 2) b. 5. False b. Negated c. True d. Both true and false. (c) over excitated. (D)$1 200 2. Alt + C Alt + A Alt + D Alt + X ⇒ Which shortcut key is used to view configure in Tally? 1. For a three-phase star connected alternator driven at 800 RPM, required to generate a line to line voltage of 430 Volts at 60Hz, if the stator winding is 2 slots per phase per pole and each coil has 4 turns, the value of useful flux per pole is——— A. This is because of the voltage drops in armature resistance Ra, armature leakage reactance, XL and voltage drop due to armature reactance, Xa. (b) almost zero lagging. When a pair of poles pass through a conductor, EMF is induced in the conductor. (b) efficiency. Salient pole type rotors are designed for alternators with many number of poles and Cylindrical rotors are designed for alternators with two to four poles. DataBase CheckPoint 2. 10. 3. (c) kVA. (d) reactive power. For a three-phase star connected alternator driven at 800 RPM, required to generate a line to line voltage of 430 Volts at 60Hz, if the stator winding is 2 slots per phase per pole and each coil has 4 turns, the value of useful flux per pole is———, Therefore, Phase voltage, Vph = VL / √3 = 248.26 Volts, Therefore, number of poles, P = 120f /N = 9, Number of slots per pole per phase, m = 2, Total number of stator slots = 2 x Number of poles x Number of phase = 48, Therefore, slot angle, α = 360/48 = 7-1/2 degree mechanical = 33.75 degree electrical, Hence, Distribution Factor, KD = sin [ ( 2 x 33.75 ) / 2 ] / 2sin ( 33.75 / 2 ) = 0.55 / 0.58 = 0.95, Number of turns per phase, Tph = 4 x 9 = 36, Hence, RMS value of induced EMF, EPh = 4.44 KcKDTphφf, As induced EMF is the generated phase voltage, Hence, flux per pole, φ = 248.26 / 261.072 = 0.027 Wb, 8.

alt+d is used to mcq

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