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For step-down transformer value of trans...

For step-down transformer value of transformation ratio is ……….

A

`r gt 1`

B

`r lt 1`

C

`r =1`

D

`r=0`

Text Solution

Verified by Experts

The correct Answer is:
B
Transformation ratio `r=N_2/N_1` and for step-down transformer `N_2 lt N_1`
`therefore N_2/N_1 lt 1 " " therefore r lt 1`
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KUMAR PRAKASHAN-ALTERNATING CURRENTS -SECTION-D MCQs (DARPAN BASED ON TEXTBOOK)
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  10. In an ideal transformer, the voltage is stepped down from 11 kV to 220...

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  11. The ratio of number of turns in primary and secondary coil of a transf...

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  12. The number of turns in primary and secondary of a transformer are 1000...

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  13. A transformer is having 2100 turns in primary and 4200 turns in second...

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  14. Transformer are used in ……….

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  15. A step-up transformer is used on a 120V line to provide a potential di...

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  17. Number of turns in the primary coil and the secondary coil of an ideal...

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  18. In one series A.C. circuit, maxima of current and voltage occur at the...

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