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The transformer ratings are usually expressed in terms of
A 100 VA, 120/12 V transformer is to be connected so as to form a step-up transformer. A Primary voltage of 120 V is applied to the transformer. What is the secondary voltage of the transformer?
S&P Global Ratings has assigned which of the following ratings to a proposed issue of senior unsecured notes by State Bank of India under the bank's $10 billion medium-term note programme?
The contracts where one of the parties has almost nil opportunities to bargain over the special terms of the agreement while the other party, usually the big corporate, is in a position to dictate its terms. The terms are prepared by the big corporate while the other party has no choice but either to accept the terms orleave the deal altogether. Such contracts are known as:
Which of the following are the characteristics of criteron‐referenced‐interpretation of test scores? A. Achievement of specific skills or concepts by each individual learner is assessed. B. Instructional objectives are based on identified skills, rather than on broader learning. C. Test‐items discriminate between examinees in terms of their relative postions in the group tested. D. Scores are expressed in terms of percentile ranks or stanines to ensure inter‐examinee comparison. E. An examinee can compare his own performance in terms of development of skills over testing occasions. Choose the correct answer from the options given below.
Match the following: (i) Half wave rectifier p) Transformer not required (ii) Full wave rectifier  q) Centre tap transformer required (iii) Full wave bridge rectifier r) Ordinary transformer required
Consider the following given statements about auto-transformers and choose the one which is/are correct. 1. Auto-transformers require less copper as compared to a conventional,2 winding transformer of the same capacity. 2. Auto-transformers provide isolation between the primary and secondary windings. 3. Auto- transformer has less leakage reactance as compared to the conventional, 2 winding transformer of the same capacity.
If the equivalent resistance and reactance of the transformer referred to the secondary of a single-phase transformer is 0.6 Ω and 0.8 Ω, respectively, the voltage drop in the transformer when supplying a current of 10 A at 0.8 pf lag is:
In the following question, sentences of a paragraph have been jumbled and labelled 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: Transformers can also be used for isolation, where the voltage in equals the voltage out, with separate coils not electrically bonded to one another. B: Transformers are most commonly used for increasing low AC voltages at high current (a step-up transformer) or decreasing high AC voltages at low current (a step-down transformer) in electric power applications. C: It was discovered in 1831. D: A transformer is a passive electrical device that transfers electrical energy from one electrical circuit to another.
While comparing potential transformer to an auto transformer, a potential transformer transfers power ________