1. . RF amplifier is designed for _________ frequency amplification
(A) Radio
(B) Audio
(C) Intermediate
(D) Video
2. . The radio frequency band is _________
(A) 30 KHz to 300 GHz
(B) 300 GHz to 300 KHz
(C) 3 MHz to 300 MHz
(D) 300 MHz to 3 KHz
3. . In a tuned radio frequency amplifier, collector load is _________
(A) RC circuit
(B) RL circuit
(C) LC parallel circuit
(D) LC series circuit
4. . The double tuned amplifier has good _________
(A) Selectivity
(B) Sensitivity
(C) Fidelity
(D) All of above
5. . In grounded base radio frequency amplifier _________
(A) Output is taken from base
(B) Input is applied on base
(C) Input is applied on collector
(D) Output is taken from collector
6. . Class C amplifiers cannot be used in _________ frequencies
(A) Intermediate
(B) Radio
(C) Audio
(D) All of these
7. . Which type of feedback is used to get stability in an amplifier
(A) Regenerative
(B) Degenerative
(C) Positive
(D) Both a and c
8. . Which type of feedback is used in oscillator
(A) Positive
(B) Negative
(C) Regenerative
(D) Both a and c
9. . Tuned radio frequency power amplifiers are used in _________
(A) Radio transmitter
(B) TV receivers
(C) Communication receivers
(D) All of the above
10. . Positive feedback is also called _________
(A) Regenerative
(B) Degenerative
(C) Series
(D) Parallel
11. . The effects of degenerative feedback on amplifier is _________
(A) Increased bandwidth
(B) Less sensitivity
(C) Less distortion
(D) All of above
12. . Which feedback is used to minimize the distortion and noise in transmitter
(A) Positive
(B) Negative
(C) Degenerative
(D) Both b and c
13. . An amplifier must also be _________
(A) Power converter
(B) Sine wave converter
(C) Square wave converter
(D) All of the above