Study desk with books and learning tools for subject-based MCQ preparation

Focused topic practice

transistor tuned amplifiers MCQs

Practise focused transistor tuned amplifiers questions with marked answers for exam preparation and subject revision.

transistor tuned amplifiers Mcqs

1. For frequencies above the resonant frequency, a parallel LC circuit behaves as a ____________ load?
0

A. Capacitive

B. Inductive

C. None of the above

D. Resistive

2. When either L or C is increased, the resonant frequency of LC circuit ____________?
0

A. Insufficient data

B. Decreases

C. Increases

D. Remains the same

3. The Q of a tuned circuit refers to the property of_______________?
0

A. Selectivity

B. None of the above

C. Fidelity

D. Sensitivity

4. At parallel resonance, the phase angle between the applied voltage and circuit current is _____________?
0

A. None of the above

B. 180o

C. 0o

D. 90o

5. Frequencies above ______________ kHz are called radio frequencies?
0

A. 200

B. 10

C. 50

D. 2

6. At series or parallel resonance, the circuit behaves as a ______________ load?
0

A. Resistive

B. None of the above

C. Capacitive

D. Inductive

7. For frequencies above the resonant frequency , a series LC circuit behaves as a ____________load?
0

A. Inductive

B. Resistive

C. Capacitive

D. None of the above

8. In parallel resonance, there is _______________?
0

A. Both voltage and current amplification

B. Voltage amplifications

C. Current amplification

D. None of the above

9. The Q of an LC circuit is given by _________________?
0

A. 2pfr x R

B. R2/2pfrL

C. R / 2pfrL

D. 2pfrL / R

10. In the double tuned circuit, if the mutual inductance between the two tuned circuits is decreased, the level of resonance curve ___________________?
0

A. Is lowered

B. Remains the same

C. None of the above

D. Is raised

11. A tuned amplifier is generally operated in ____________operation?
0

A. Class A

B. Class B

C. Class C

D. None of the above

12. If a high degree of selectivity is desired, then double-tuned circuit should have ___________ coupling?
0

A. None of the above

B. Loose

C. Critical

D. Tight

13. In series resonance, there is__________________?
0

A. Voltage amplification

B. Current amplification

C. Both voltage and current amplification

D. None of the above

14. At parallel resonance, the ratio L/C is ______________?
0

A. Zero

B. None of the above

C. Small

D. Very large

15. If the resistance of a tuned circuit is increased, the Q of the circuit _______________?
0

A. Is decreased

B. Is increased

C. None of the above

D. Remains the same

16. The Q of a tuned amplifier is 50. If the resonant frequency for the amplifier is 1000kHZ, then bandwidth is __________________?
0

A. 10kHz

B. 30 kHz

C. 20 kHz

D. 40 kHz

17. In a parallel LC circuit, if the input signal frequency is increased above resonant frequency then _______________?
0

A. XL increases and XC decreases

B. XL decreases and XC increases

C. Both XL and XC increase

D. Both XL and XC decrease

18. At series resonance, voltage across L is____________voltage across C?
0

A. Less than but in phase with

B. Equal to but opposite in phase to

C. Greater than but in phase with

D. Equal to but in phase with

19. A class C amplifier always drives _____________load?
0

A. A resonant tank

B. A pure capacitive

C. A pure inductive

D. A pure resistive

20. Double tuned circuits are used in ____________ stages of a radio receiver?
0

A. None of the above

B. Output

C. IF

D. Audio

Showing 1 to 20 of 40 mcqs