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Which of the following is/are used in synchronous machines to maintain mechanical stability?

Which of the following is/are used in synchronous machines to maintain mechanical stability? Correct Answer Damper winding

Damper windings are the dummy windings which help to stablize the machine during transient instability.

Related Questions

Consider the following statements regarding synchronous machines: 1. When a synchronous motor is over-excited, its back emf is greater than the supply voltage 2. When a synchronous motor is over-excited, its power factor is leading 3. Synchronous motor is used as capacitor where load is so large that construction of a static capacitor is impractical Which of these statements are correct?
Consider the following statements 1. Value of transient stability limit will be lower than steady-state stability limit 2. Transient stability limit is the maximum flow of power through a particular point in the power system without loss of stability when large and sudden disturbances occur 3. Critical clearing angle is related to the steady-state stability limit Which of the above statement(s) is/are correct?
Study the table and answer the question that follows: In the given table, production of five different types of machines (A, B, C, D, E) in the years from 2016 to 2020 (in thousands) is given. Machines Years 2016 2017 2018 2019 2020 A 46 53 56 58 67 B 50 65 67 66 72 C 43 54 55 47 51 D 47 52 61 65 74 E 48 58 63 64 67 What is the ratio of the total production of type A machines in 2018 and type E machines in 2019 to the total production of type C and type D machines in 2016?
Which of the following statements are correct for synchronous motors? 1. Synchronous motors are well-suited for direct connection top reciprocating compressors. 2. Over-excited synchronous motors are most commonly used for power factor improvement. 3. Synchronous motors are generally used for current regulation of long transmission lines Select the correct answer using the code given below.
In case of synchronous motor, which of the following are true? a. Synchronous motor is not self-starting b. If the rotor poles are excited by field current and the stator terminals are connected to AC supply, motor vibrates. c. Variable frequency supply is used to start synchronous motor. d. By using frequency converter, a synchronous motor can be brought from standstill to its desired speed.
A three-phase cylindrical rotor synchronous generator has a synchronous reactance Xs and a negligible armature resistance. The magnitude of per phase terminal voltage is VA and the magnitude of per phase induced emf is EA. Considering the following two statements, P and Q, P: For any three-phase balanced leading load connected across the terminals of this synchronous generator, VA is always more than EA Q: For any three-phase balanced lagging load connected across the terminals of this synchronous generator, VA is always less than EA Which of the following options is correct?
Consider the following statements: 1. All machines consume energy. 2. Electricity provides energy. 3. Electrically operated machines are cheap to maintain. 4. Electrically operated machines do not cause pollution. Which one of the following inference can be drawn from the above statement?
In the following question, there are six sentences marked S1, S6, P, Q, R and S. The position of S1 and S6 are fixed. Choose one of the four options given below which would be the most logical sequence of the sentences in the passage. S1.We do not know how to manage our machines.  P. The machines are very stern masters. Q. They must be fed with coal, and given petrol to drink, and oil to wash with, and must be kept at the right temperature. R. Machines were made to be man's servants, yet he has grown so dependent on them that they are in a fair way to become his masters.  S. Already most men spend most of their lives looking after and waiting upon machines.  S6. If they do not get their meals when they expect them, they grow sulky and refuse to work.
Three statements are followed by three conclusions numbered I, Il and Ill. Assuming the statements to be true even if they do not conform to real-world knowledge, decide which of the conclusions logically follows/follow from the statements. Statements: 1. All watches are clocks. 2. Some clocks are machines. 3. Some machines are gadgets. Conclusions: I. Some watches are machines. Il. Some machines are clocks. Ill. Some gadgets being clocks is a possibility.
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