1. This scientist invented the transformer.
(A) Michael Faraday
(B) Nicholas Callan
(C) Nikola Tesla
(D) William Stanley
2. A transformer is called static device because;
(A) It is not portable
(B) There is no rotating part in it
(C) Flux does not rotate at synchronous speed
(D) All of these
3. A general transformer does not change;
(A) Voltage
(B) Current
(C) Frequency
(D) Both a & b
4. Step up Transformer increases;
(A) Frequency
(B) Current
(C) Voltage
(D) Both a & b
5. One to one transformer changes;
(A) Voltage
(B) Current
(C) None of these
(D) Frequency
6. Number of secondary turns of a step up transformer as compared to its primary turns are;
(A) Less
(B) Less or more
(C) Equal
(D) More
7. Cross sectional area of secondary winding of a step up transformer as compared to its primary winding is;
(A) Less
(B) More
(C) Equal
(D) Less or more
8. Number of secondary turns of a step down transformer as compared to its primary turns are;
(A) More
(B) Less
(C) Equal
(D) Any of a or b
9. Number of secondary turns of a one to one transformer as compared to its primary turns are;
(A) Less
(B) More
(C) Any of a or b
(D) Equal
10. Working principle of an ordinary electric transformer is
(A) Electromagnetic repulsion
(B) Electromagnetic attraction
(C) Mutual Induction
(D) Magnetic locking