1. The input capacitor in an amplifier is the______________ capacitor?
A. Coupling
B. Bypass
C. Leakage
D. None of the above
✅ The correct answer is option A.
Single Stage Transistor Amplifiers MCQs
2. The purpose of d.c. conditions in a transistor is to___________________?
A. Reverse bias the emitter
B. Forward bias the collector
C. Set up operating point
D. None of the above
✅ The correct answer is option C.
3. When an a.c. signal is applied to an amplifier, ,the operating point moves along_________________?
A. c. load line
B. c. load line
C. both d.c. and a.c. load lines
D. none of the above
✅ The correct answer is option B.
4. If a transistor amplifier feeds a load of low resistance (e.g. speaker), then voltage gain will be_______________?
A. High
B. Very high
C. Moderate
D. Low
✅ The correct answer is option D.
5. The point of intersection of d.c. and a.c. load lines is called________________?
A. Saturation point
B. Cut off point
C. Operating point
D. None of the above
✅ The correct answer is option C.
6. In order to get more voltage gain from a transistor amplifier, the transistor used should have_________________?
A. Thin base
B. Thin collector
C. Wide emitter
D. None of the above
✅ The correct answer is option A.
7. It is generally desired that a transistor should have_____________________ input impedance?
A. Low
B. Very low
C. High
D. Very high
✅ The correct answer is option C.
8. In the d.c. equivalent circuit of a transistor amplifier, the capacitors are considered__________________?
A. Short
B. Open
C. Partially short
D. None of the above
✅ The correct answer is option B.
9. If a transistor amplifier draws 2mA when input voltage is 10 V, then its input impedance is ____________?
A. 20 kΩ
B. 2 kΩ
C. 10 kΩ
D. 5 kΩ
✅ The correct answer is option D.
10. In the zero signal conditions, a transistor sees _____________ load?
A. c.
B. c.
C. both d.c. and a.c.
D. none of the above
✅ The correct answer is option A.