railway RRB JE (CBT I + CBT II) Mock Test 2024 Communication Systems Noise in Analog Communication System Noise Temperature and Noise Figure
Gain and NF of a single-stage amplifier are 10 dB and 3 dB respectively. When two such amplifiers cascaded then gain and NF of the cascaded amplifier will be?
1
Gain : 20 dB, NF : 3.2 dB
2
Gain : 20 dB, NF : 6.0 dB
3
Gain : 13 dB, NF : 3.6 dB
4
Gain : 13 dB, NF : 6.7 dB