RC coupling is not used to amplify extremely low frequencies because

When a multistage amplifier is to amplify d.c. signal, then one must use coupling

A

RC

B

Transformer

C

Direct

D

None of the above

When I am not in hurry. walk extremely slowly. The word ‘extremely’ is-

A

Noun

B

Adjective

C

Verb

D

Adverb

‘The man is extremely tired.’ Here 'extremely' is-

A

adjective

B

verb

C

adverb

D

noun

In an RC coupling scheme, the coupling capacitor CC must be large enough ___________

A

To pass d.c. between the stages

B

Not to attenuate the low frequencies

C

To dissipate high power

D

None of the above

In RC coupling, the value of coupling capacitor is about ___________

A

100 pF

B

0.1 µF

C

0.01 µF

D

10 µF

The most costly coupling is ___________ coupling

A

RC

B

Direct

C

Impedance

D

Transformer

The lower and upper cut off frequencies are also called ___________ frequencies

A

Sideband

B

Resonant

C

Half-resonant

D

Half-power

A band-stop filter passes frequencies between its lower and upper critical frequencies and rejects all others.

A

True

B

False

Frequencies above ___________ kHz are called radio frequencies

A

2

B

10

C

50

D

200

RC coupling is generally confined to low power applications because of

A

Large value of coupling capacitor

B

Low efficiency

C

Large number of components

D

None of the above

RC coupling is not used to amplify extremely low frequencies because

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