# BJT in Amplifier Design MCQ’s

This set of Electronic Devices & Circuits Multiple Choice Questions & Answers (MCQs) focuses on “BJT in Amplifier Design”.

1. The corresponding maximum input signal permitted is
a) 1.64 mV
b) 1.74 mV
c) 1.84 mV
d) 1.94 mV

2. Find the maximum allowed output negative swing without the transistor entering saturation, and
a) 1.27 mV
b) 1.47 mV
c) 1.67 mV
d) 1.87 mV

(Q.3- Q.5) For the amplifier circuit in Fig. 6.33(a) with Vcc = +10 V, Rc = 1 kΩ and the DC collector bias current equal to Ic,advertisement

3. The maximum possible positive output signal swing as determined by the need to keep the transistor in the active region.
a) 9.7 + Ic
b) 9.7 – Ic
c) 10.3 + Ic
d) 10.3 – Ic

4. The maximum possible negative output signal swing as determined by the need to keep the transistor in the active region.
a) 0.1 Ic
b) Ic
c) 10 Ic
d) 100 Ic

5. Find the voltage gain.
a) 100 Ic
b) 200 Ic
C) 400 Ic
d) 800 Ic

6. For a BJt Vt is 5 V, Rc = 1000 ohm and bias current Ic is 12 mA. The value of the voltage gain is __________
a) -1.2 V/V
b) -2.4 V/V
c) -3.6 V/V
d) -4.8 V/V

7. The transistor in the circuit below is biased at a dc collector current of 0.5 mA. What is the voltage gain?

a) -1 V/V
b) -10 V/V
c) -100 V/V
d) -1000 V/V

(Q.8–Q.10) (Q.3- Q.5) For the BJT amplifier circuit with Vcc = +10 V, Rc = 1 kΩ and the DC collector bias current equal to 5 mA,

8. The maximum possible positive output signal swing as determined by the need to keep the transistor in the active region.
a) -1.7 V
b) -2.7 V
c) -3.7 V
d) -4.7 V

9. The value of the voltage gain is _______________
a) -2 V/V
b) -4 V/V
c) -10 V/V
d) -20 V/V

10. The maximum possible negative output signal swing as determined by the need to keep the transistor in the active region.
a) 0.5 V
b) 1 V
c) 5 V
d) 10 V