Which winding in a transformer has more number of turns ?

Related Mcqs:

1. Which of the following is the main advantage of an auto-transformer over a two winding transformer?

   A. Hysteresis losses are reduced
   B. Saving in winding material
   C. Copper losses are negligible
   D. Eddy losses are totally eliminated

2. In a power or distribution transformer about 10 per cent end turns are heavily insulated__________?

   A. to withstand the high voltage drop due to line surge produced by the shunting capacitance of the end turns
   B. to absorb the line surge voltage and save the winding of transformer from damage
   C. to reflect the line surge and save the winding of a transformer from damage
   D. none of the above

3. In the transformer following winding has got more cross-sectional area______________?

   A. Low voltage winding
   B. High voltage winding
   C. Primary winding
   D. Secondary winding

4. If R2 is the resistance of secondary winding of the transformer and K is the transformation ratio then the equivalent secondary resistance referred to primary will be___________?

   A. R2/VK
   B. R2IK2
   C. R22!K2
   D. R22/K

5. Which winding of the transformer has less cross-sectional area?

   A. Primary winding
   B. Secondary winding
   C. Low voltage winding
   D. High voltage winding

6. Which type of winding is used in 3 phase shell-type transformer?

   A. Circular type
   B. Sandwich type
   C. Cylindrical type
   D. Rectangular type

7. The changes in volume of transformer cooling oil due to variation of atmospheric temperature during day and night is taken care of by which part of transformer?

   A. Conservator
   B. Breather
   C. Bushings
   D. Buchholz relay

8. Primary winding of a transformer________________?

   A. is always a low voltage winding
   B. is always a high voltage winding
   C. could either be a low voltage or high voltage winding
   D. none of the above

9. The secondary winding of which of the following transformers is always kept closed?

   A. Step-up transformer
   B. Step-down transformer
   C. Potential transformer
   D. Current transformer

10. In a transformer the energy is conveyed from primary to secondary_________?

    A. through cooling coil
    B. through air
    C. by the flux
    D. none of the above