Dc Generator Question And Answer Pdf

File Name: dc generator question and answer .zip
Size: 1994Kb
Published: 26.03.2021

Cast iron. Cumulatively compounded long shunt.

The material for commutator brushes is generally a mica b copper c cast iron d carbon Ans: d. The insulating material used between the commutator segments is normally a graphite b paper c mica d insulating varnish Ans: c. If brushes of a D. Armature reaction of an unsaturated D. Iron losses in a D.

37 Question & Answers on DC Generators.pdf

Why is job preparation cooler with our interview questions site? Preparing for a job is now easier and simpler with our wisdom jobs site? Because Wisdomjobs give you all information plus all the jobs in one place.

When you're interviewing for a new position, you should come prepared to answer the interview questions to win in first attempt. To be precise about a generator is a device that changes motive power into electrical power for use in an external circuit. Question 1. What Is A Generator? Question 2. Question 3. Answer : First Law: Whenever a conductor cuts magnetic flux and E. F is induced in that conductor. Second Law : The magnitude of the induced e. Question 4. Question 5.

Answer : In an AC Generator the field is rotating and the armature is stationary whereas in DC Generator the field is stationary and the armature is rotating. Question 6. Answer : It is easy to take output from the stationary armature. It is easier to insulate stationary armature for higher voltage. Low voltage excitation supply can be easily supplied to the rotor through slip rings. Question 7. Question 8. Question 9. Question Windage loss is low.

Low noise. Heat transfer co efficient is 1. Thermal conductivity is 7 times higher than air. Answer : It is the ratio of the field current required to produce rated voltage on open circuit to the field current required to circulate rated current on short circuit. Answer : Over Current protection is not considered necessary for modern alternators because these are capable of withstanding a complete short circuit at their terminals for sufficient time without much over heating and damage.

Answer : Merz-Price protection is differential protection provided for the alternator. The relays used in the Merz-Price protection system of alternator are instantaneous electro-magnetic type protection. Answer : Large capacity of alternators are typically provided with resistance grounding.

High value of resistor is connected to the neural path to the ground. If the generator is delta connected, then it is grounded with the help of zig-zag transformer or Delta-Star transformer such that a high resistor is connected between the neutral point and the ground. Resistance grounding is provided so as to limit the short circuit current flowing during earth fault to stator winding in order to provide protection against mechanical stresses and melting of winding during Line to Ground short circuit.

In large generators fault current is limited as low as 10 to 15 amperes during short circuit. Answer : The coils of the modern alternators are single turn and therefore it is not necessary to provide protection for turn to turn faults.

Answer : In the event of fault on the generator windings even though the generator circuit breaker is tripped, the fault is continuous to fed as long as the excitation will exist because the emf is induced in the generator.

Hence it is necessary to suppress the field immediately after disconnecting the faulty generator from the system. Answer : The over voltage occurs when the prime mover speed increases due to sudden loss of the load on the generator and the speed control governors in case of turbo-generators are very sensitive to the speed variations and therefore generator over voltage of significant duration or magnitude does not generally occur.

This is the reason why generators are not provided with over voltage protection. Popular Interview Questions. All Interview Questions. Generator Practice Test. IT Skills. Management Skills. Communication Skills. Business Skills. Digital Marketing Skills. Human Resources Skills. Health Care Skills. Finance Skills. All Courses. All Practice Tests. Generator Operator Interview Questions Question 6. Answer : Double star connection. Answer : Answer : Hydrogen.

Answer : Resistance temperature detector. Generator Operator Interview Questions Question Job Recommendation Latest. Jobs in Meghalaya Jobs in Shillong. View All Locations. How to design your resume? Have you ever lie on your resume? Read This Tips for writing resume in slowdown What do employers look for in a resume?

Interview Tips 5 ways to be authentic in an interview Tips to help you face your job interview Top 10 commonly asked BPO Interview questions 5 things you should never talk in any job interview Best job interview tips for job seekers 7 Tips to recruit the right candidates in 5 Important interview questions techies fumble most What are avoidable questions in an Interview?

Top 10 facts why you need a cover letter? Username Password. New to Wisdomjobs? Sign up. Excel Power View Tutorial. Electrical and Electronics Engineering Interview Questions. Generator Operator Interview Questions. Excel Power View Interview Questions. Electrical Power System Interview Questions. Material Handler Interview Questions.

Electric Power Generation Interview Questions. Electrical and Electronics Engineering Practice Tests.

Second Year D.C. Generator MCQ Question | D. C. generator mcq question and answer

February 18, Generator MCQ Question,d c generator mcq question and answer. What are the rotating parts of the D. Ans:- These parts of the following :. Which types of material e. Ans:- They are made of carbon, copper or carbon and copper alloy.

Service Unavailable in EU region

Mechanical Engineering 1. MCQ Practice Tests. Timed Mock Tests.

Direct Current Generator Or DC Generator Objective Questions and Answers

The armature of D. The resistance of armature winding depends on a length of conductor b cross-sectional area of the conductor c number of conductors d all of the above Ans: d.

Однако, сделав еще несколько шагов, Стратмор почувствовалчто смотрит в глаза совершенно незнакомой ему женщины. Ее глаза были холодны как лед, а ее обычная мягкость исчезла без следа. Сьюзан стояла прямо и неподвижно, как статуя. Глаза ее были полны слез.

Наконец парень посмотрел на. - Scusi? - Он оказался итальянцем. - Аегорortо. Per favore.

Хейл - Северная Дакота. Она замерла и непроизвольно задержала дыхание, чувствуя на себе взгляд Хейла. Сьюзан повернулась, и Хейл, пропуская ее вперед, сделал широкий взмах рукой, точно приветствуя ее возвращение в Третий узел.

 - Я полагаю, Хейл держит этот пароль, глубоко запрятав его в компьютере, а дома, возможно, хранит копию. Так или иначе, он попал в западню. - Тогда почему бы не вызвать службу безопасности, которая могла бы его задержать. - Пока рано, - сказал Стратмор.

Голос его прозвучал, как всегда, твердо: - А как же мой план с Цифровой крепостью.

 Что. - Может случиться так, что компьютер, найдя нужный ключ, продолжает поиски, как бы не понимая, что нашел то, что искал.  - Стратмор смотрел на нее отсутствующим взглядом.  - Я полагаю, у этого алгоритма меняющийся открытый текст. Сьюзан затаила дыхание.

4 Response
  1. Philippine P.

    D.C. GENERATORS - Electrical Engineering Multiple choice Questions and Answer pdf free download interview questions objective type questions lab viva.

  2. Edmee M.

    D c generator question and answer pdf. 1) Define the principle of operation of a DC generator? An electric generator is a machine that converts mechanical.

  3. Filis C.

    About Electrician Education Electrician Education is a blog through covers all the questions of ITI which are very important questions for competitive exams.

Leave a Reply