ELECTRICAL MCQ
1. Two winding's of a transformer are designated as (a) primary and secondary winding's (b) primary and h.v. winding's (c) secondary and 1 v winding's or primary and 1 v winding's (d) h.v. and 1.v. winding's 2. Two transformers A and B,having identical ratings, are to be designed with flux densities of 1.2 T and 1.4 T respectively. The weight of transformer A per kVA would be (a) less than that of tanformer B (b) more than that of transformer B (c) equal to that of transformer B (d) may be less or moe than that of transformer B depending upon other perameters 3. In power transformers, core is made up of (a) cast iron (b) silicon steel (c) ferrite (d)powdered alloy 4. Consider the following statements (a) Air-core transformers are used in gate-triggering circuits of thyristor's (b) Cores made of soft-ferrite are used in pulse ...