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1. The efficiency of a transformer will be maximum when
5. While conducting short-circuit test on a transformer the following side is short circuited
4. Which of the following is not a part of transformer installation ?
3. The purpose of providing an iron core in a transformer is to
5. The permissible flux density in case of cold rolled grain oriented steel is around
4. Sumpner鈥檚 test is conducted on trans-formers to determine
3. The dielectric strength of transformer oil is expected to be
2. No-load on a transformer is carried out to determine
1. The path of a magnetic flux in a transformer should have
5. The no-load current drawn by transformer is usually what per cent of the full-load current ?
4. The degree of mechanical vibrations produced by the laminations of a transformer depends on
2. In a transformer the energy is conveyed from primary to secondary
1. Which of the following does not change in a transformer ?
