Test: Open Circuit and Short Circuit Test - Electrical Engineering (EE) MCQ

A single phase transformer of 2200/220 V having rated l.v. current of 150 A has to undergo open circuit test on h.v side. The instruments used are voltmeter of 200V and ammeter of 1A. Then the results ___________

A single phase transformer of 2200/220 V having rated l.v. current of 150 A has to undergo open circuit test on h.v. side. Which of the below instruments range should be used?

To conduct the open circuit test, test is conducted on the _____________

Which of the following informations are obtained from short-circuit test?

I. Ohmic losses at rated current
II. Equivalent resistance and leakage reactance
III. Core losses
IV. Voltage regulation

The open circuit test results in finding which of the following parameters?

I. core losses
II. shunt branch parameters
III. turns ratio of transformer

Which of the following conditions have to ensured for a open-circuit test?

A. Performed on L.V side
B. Leakage impedance can be obtained
C. It is performed at 10-12% of rated voltage
D. It gives magnetizing impedance

Transformers with high leakage impedance is used in ___________