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If a transfomer of an audio amplifier ha...

If a transfomer of an audio amplifier has output impedance `8000Omega` and the speaker has input impedance of `8Omega`, the primary and secondary turns of this transfomer connected between the output of amplifier and to loud speaker should have the ratio

A

`1000:1`

B

`100:1`

C

`1:32`

D

`32:1`

Text Solution

Verified by Experts

The correct Answer is:
D
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MHTCET PREVIOUS YEAR PAPERS AND PRACTICE PAPERS-ELECTROMAGNETIC INDUCTION-Example 1
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  2. If the coils of a transfomer are made up of thick wire, then

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  3. If a transfomer of an audio amplifier has output impedance 8000Omega a...

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  4. Which of the following is not transducer?

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  5. For high frequency, a capacitor offers

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  7. The maximum value of a.c. voltage in a circuit is 707 V . Its rms valu...

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  8. Which current do not change direction with time?

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  9. Which of the following represents the value of voltage and current at ...

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  10. A 60muF capacitor is connected to a 110V, 60 Hz AC supply determine th...

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  12. In an AC circuit the instantaneous values of emf and current are e=2...

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  13. The peak value of 220 a.c. is

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  15. An AC source is 120 V-60 Hz. The value of voltage after 1/720 s from...

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  16. The instantaneous voltage through a device of impendance 20 Omega is V...

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  18. If the frequency is doubled, what happens to the capacitive reactance ...

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