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in a step-up transformer, the turn ratio...

in a step-up transformer, the turn ratio is `1:2` leclanche cell (e.m.f. 1.5V) is connected across the primary. The voltage devloped in the secondary would be

A

3.0 V

B

0.75 V

C

1.5 V

D

zero

Text Solution

Verified by Experts

The correct Answer is:
D
Transformer is an AC devices, this does not work on DC. Hence, output voltage is zero.
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MHTCET PREVIOUS YEAR PAPERS AND PRACTICE PAPERS-ELECTROMAGNETIC INDUCTION-Example 1
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  2. A transformer having efficiency of 90% is working on 200 V and 3 kW po...

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  3. in a step-up transformer, the turn ratio is 1:2 leclanche cell (e.m.f....

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  4. The core of any transformaer is laminated so as to

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  5. How much current is drawn by the primary coil of a transformer which s...

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  6. In an ideal transfomer, the voltage is step-down from 11 kV to 220 V. ...

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  7. For a large industrial city with much load variations, the DC generato...

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  8. In an ideal transfomer, the voltage is step-down from 11 kV to 220 V. ...

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  9. When power is drawn from the secondary coil of the transformer, the dy...

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  10. An electric motor runs a D.C. source of e.m.f. 200 V and draws a curre...

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  11. In step-up transfomer, the relation between number of turns in primary...

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  12. A transformer is used to light a 140 W, 24 V lamp from 240 V AC mains....

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  13. The armature of a DC motor has 20Omega resistance. It draws a current ...

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  14. Voltage in the secondary coil of a transfomer does not depend upon

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  15. A step up transformer operates on a 230 V line and a load current of 2...

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  16. The armature of a shunt wound motor can with stand current up to 8 A b...

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  17. A step-down transformer has 50 turns on secondary and 1000 turns on pr...

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  18. A six pole generotar with fixed field excitation developes an e.m.f. o...

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  19. A step-down transfomer reduces the voltage of a transmission line from...

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  20. The e.m.f. induced in a secondary coil is 20000 V when the current bre...

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