IV Semester-1

Identify the best possible configuration for signal amplification

• CE
• CB
• CC
• CE and CB

What should be the level of input resistance to allow occurrence of source loading in CB amplifier configuration?

• high
• Moderate
• low
• Stale

BJT can be used as a dc amplifier?

• True
• False

Which among the below assertions is not a relevant property of CE amplifier?

• High input resistance
• High current gain
• High voltage gain
• High output resistance

If Av, Ai and Ap represents the voltage , current and power gain ratio of an amplifier which of the below is incorrect?

• Current gain: 20 log Ai db
• Power gain: 10 log Ap
• Power gain: 20 log Ap db
• Voltage gain: 20 log Av db

What is the phase-shift between input and output voltages of CE amplifier?

• 90
• 120
• 0
• 180

A coupling capacitor is used such that only the AC signal from the first circuit can pass through while dc is blocked.

• True
• False

The range of β is

• 10-50
• 20-500
• 50-200
• 100-300

If a three stage amplifier has individual stage gains of 10db, 6db and 15db; then the total gain in db is

• 31
• 900
• 60
• 90