An amplifier has voltage gain = 1000. The voltage gain (in dB) is- (a – InterviewSolution

InterviewSolution

1.

An amplifier has voltage gain = 1000. The voltage gain (in dB) is- (a) 30 dB (b) 60 dB (c) 3 dB (d) 20 dB.

Answer»

(b) 60 dB

Voltage gain in dB = 20 log₁₀ A = 20 log₁₀ (1000) = 20 x 3 = 60 dB.

Discussion

No Comment Found

Related InterviewSolutions

The light emitted in an LED is due to- (a) Recombination of charge carriers (b) Reflection of light due to lens action (c) Amplification of light falling at the junction.
Mention the factor which determines the (i) frequency and (ii) intensity of light emitted by LED.
What is an extrinsic semiconductor?
Doping a semiconductor results in (a) The decrease in mobile charge carriers (b) The change in chemical properties (c) The change in the crystal structure (d) The breaking of the covalent bond
What do you mean by doping?
What are extrinsic semiconductor?
Which type of gate is represented by the given figure?(a) NAND (b) NOT (c) AND (d) OR.
Rectification is the process of conversion of (a) a.c into d.c (b) low a.c into high a.c (c) d.c into a.c (d) low d.c into high d.c
Holes are charge carrier in (a) intrinsic semiconductors (b) ionic solids (c) p-type semiconductor (d) metals.
The major carrier of current in a p-type semiconductor will be. (a) neutrons (b) protons(c) electrons (d) holes.