TUGAS SELFTEST ELEKTRONIKA TELEKOMUNIKASI HALAMAN 107-108

  1. Linear power amplifiers are used to raise the power level of Low Level AM and SSB Signals.
  2. Mosfet power amplifier is used to increase the power level of an FM signal.
  3.  Linear power amplifier operate class A,B, and AB
  4.  A class A transistor power amplifier has an efficiency of 50 percent. The output power is 27W. The power dissipated in the transistor is 13.5 W
  5. Class A amplifier conduct for 360 degrees of a sine wave input.
  6. True or false. With no input, a class B amplifier does not conduct. FALSE
  7. Class B RF power amplifiers normally used a(n) Broadband configuration.
  8. A class C amplifier conducts for approximatly 90 degrees to 150 degrees of the input signal.
  9. In a class C amplifier, collector current flows in the form of positive pulses.
  10. In a class C amplifier, a complete sinusoidal output signal is produced by a(n) Timed Circuit.
  11. The efficiency of a class C amplifier is in the range of 60 to 85 percent.
  12. The tuned circuit in the collector of a class C amplifier acts as a filter to eliminate Induced Voltage.
  13. A class C amplifier whose output tuned circuit resonates at some integer multiple of the input frequency is called a(n) Flywheel effect.
  14. Frequency multipliers with factors of 2, 3, 4, and 5 are cascaded. The input is 1.5MHz. The output is 120 MHz.
  15. A class C amplifier has DC supply voltage of 28 V and an average collector current of 1.8A. The power input is 50.4 W

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