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If Xl is leakage reactance, Xf is reactance due to field winding, Xdw is reactance due to damper winding and Xa is armature winding reactance then reactance of synchronous generator in subtransient state is due to which of the following?
If Xa is the armature reactance of a synchronous machine and Xl is the leakage reactance of the same machine, then the synchronous reactance is ____________
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?
In the following question, sentences of a paragraph have been jumbled and labeled as A, B, C, and D. You are required to rearrange the jumbled sentences of the paragraph and mark your response accordingly by selecting the correct option. A. The value of the mutual fund company depends on the performance of the securities it decides to buy. B. Investing in a share of a mutual fund is different from investing in shares of stock. C. When you buy a unit of a mutual fund, you are buying the performance of its portfolio. D. Mutual funds pool money from the investing public and use that money to buy other securities, usually stocks and bonds.
A system consists of an alternator having reactance of 0.5pu connected to an infinite bus through a series of reactance of 1 pu. The generator terminal voltage of IBB is 1 pu and that of 1.2 pu. The emf induced in the alternator will have the phase difference with respect to reference for the maximum power transfer is _______________
An alternator, with synchronous reactance of 0.8 pv is connected to an IBB at rated voltage. With its excitation emf adjusted to 1.3 pv, the alternator delivers an output of 0.5 pv. The load angle is __________
In a mutual fund Capti, customers gets 100% increment in 5 years and in another mutual fund Capfirst customers get 200% in 12 years. What amount will Anamika get after 3 years if she invests total of Rs. 27000 in these two mutual funds in the ratio of 5 : 4? (Assume both mutual fund credits interest in simple rate)
Why a retail investor is recommended to invest through a mutual fund in a stock exchange?
1. Mutual funds invest funds in a diversified portfolio of securities, thus reducing the risk of the investor.
2. Mutual funds are managed by financial experts.
3. Mutual funds promise high returns to the investors of the fund.
An 3 phase alternator star connected 400 V synchronous motor takes a power input of 5472 watts at rated voltage. Its synchronous reactance is 10** per phase and negligible resistance. If its excitation voltage is adjusted equal to the rated voltage of 400 V, its power factor is _______
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.