1. . A transformer can operate from:
(A) Fixed Supply
(B) Positive
(C) Alternating Supply
(D) Negative
2. . A transformer has only one winding:
(A) Step up
(B) Auto
(C) Tapped
(D) Step down
3. . Transformer is a __________:
(A) Mechanical
(B) Rotating device
(C) Electronic device
(D) Static device
4. . Statically induced E.M.F has types:
(A) 4
(B) 5
(C) 3
(D) 2
5. . Transformer E.M.F depends upon:
(A) No of turns
(B) Flux
(C) All of these
(D) Current
6. . A step-up transformer:
(A) Increases voltage
(B) Increases current
(C) Decreases voltage
(D) Decreases current
7. . A step-down transformer:
(A) Increases voltage
(B) Converts AC to DC
(C) Keeps voltage same
(D) Decreases voltage
8. . The primary purpose of a transformer is:
(A) Generate electricity
(B) Convert AC to DC
(C) Change voltage levels
(D) Store energy
9. . Transformer losses include:
(A) Hysteresis loss
(B) Eddy current loss
(C) All of these
(D) Copper loss
10. . Transformer efficiency can be increased by:
(A) Reducing losses
(B) Increasing current
(C) Increasing voltage
(D) Decreasing turns