Shaju Upendran - Study24x7

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Shaju Upendran
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Shaju Upendran

Studied Instrumentation and control at N S S College of engineering, Palakkad
Embedded Faculty at IME POOJAPURA
Live in Thiruvananthapuram,India, Kerala
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30 Jun 2020 12:27 PM

Hartley oscillator is commonly used in

A

B

C

D

none of the above

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• Edubabble LLP
• Hartley oscillator is commonly used in Radio Receivers. The Hartley circuit is often referred to as a split-inductance oscillator because coil L is centre-tapped.
30 Jun 2020 12:23 PM

An LC Oscillator cannot be used to produce low frequencies

A

true

B

false

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30 Jun 2020 12:21 PM

An oscillator employs

A

positive feedback

B

negative feedback

C

neither positive nor negative feedback

D

data insufficient

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30 Jun 2020 12:18 PM

An oscillator converts

A

a.c. power into d.c. power

B

d.c. power into a.c.power

C

mechanical power to a.c. power

D

none of the above

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30 Jun 2020 12:12 PM

when negative voltage feedback is applied to an amplifier, its bandwidth

A

is increased

B

is decreased

C

remains the same

D

insufficient data

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30 Jun 2020 12:07 PM

When current feedback (negative) is applied to an amplifier, its output impedance

A

is increased

B

is decreased

C

remains the same

D

none of the above

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30 Jun 2020 12:05 PM

The voltage gain of emitter follower is

A

much less than 1

B

approximately equal to 1

C

greater than 1

D

none of the above

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30 Jun 2020 12:03 PM

Emitter follower is used for

A

current gain

B

impedance matching

C

voltage gain

D

none of the above

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30 Jun 2020 12:01 PM

When current feedback (negative) is applied to an amplifier , its input impedance

A

is decreased

B

is increased

C

remains the same

D

none of the above

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28 Jun 2020 04:59 PM

Negative feedback is employed in

A

oscillators

B

rectifiers

C

amplifiers

D

none of the above

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