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MCQs

Total Questions : 646 | Page 1 of 65 pages
Question 1. In the given figure reflection coefficient at load isIn The Given Figure Reflection Coefficient At Load Is
  1.    0.6
  2.    - 0.6
  3.    0.4
  4.    - 0.4
 Discuss Question
Answer: Option B. -> - 0.6
Answer: (b).- 0.6
Question 2. In the given figure the time taken by the wave to make one round trip isIn The Given Figure The Time Taken By The Wave To Make One R...
  1.    10 ns
  2.    20 ns
  3.    30 ns
  4.    40 ns
 Discuss Question
Answer: Option D. -> 40 ns
Answer: (d).40 ns
Question 3. In the given figure the reflection coefficient at source end isIn The Given Figure The Reflection Coefficient At Source End...
  1.    1
  2.    -1
  3.    1/3
  4.    -1/3
 Discuss Question
Answer: Option C. -> 1/3
Answer: (c).1/3
Question 4. For the strip line in the given figure the capacitance per unit length =For The Strip Line In The Given Figure The Capacitance Per U...
  1.    A
  2.    B
  3.    C
  4.    D
 Discuss Question
Answer: Option A. -> A
Answer: (a).A
Question 5. In the given figure the reflected voltage wave after first reflection isIn The Given Figure The Reflected Voltage Wave After First R...
  1.    18 V
  2.    -18 V
  3.    30 V
  4.    -30 V
 Discuss Question
Answer: Option B. -> -18 V
Answer: (b).-18 V
Question 6. A line has a phase constant of 29.8 rad/m. At 1000 MHz the wavelength is
  1.    29.8 m
  2.    2.98 m
  3.    2.1 m
  4.    0.21 m
 Discuss Question
Answer: Option D. -> 0.21 m
Answer: (d).0.21 m
Question 7. In a directional coupler
  1.    isolation (dB) equals coupling plus directivity
  2.    coupling (dB) equals isolation plus directivity
  3.    directivity (dB) equals isolation plus coupling
  4.    isolation (dB) equals (coupling) (directivity)
 Discuss Question
Answer: Option A. -> isolation (dB) equals coupling plus directivity
Answer: (a).isolation (dB) equals coupling plus directivity
Question 8. As the frequency is increased, the charging MVAR in a cable
  1.    decreases
  2.    increases
  3.    remain the same
  4.    decreases or remains the scheme
 Discuss Question
Answer: Option B. -> increases
Answer: (b).increases
Question 9. Loss angle of a good quality cable is about
  1.    1°
  2.    30°
  3.    70°
  4.    90°
 Discuss Question
Answer: Option A. -> 1°
Answer: (a).1°
Question 10. In a three cavity klystron amplifier, the oscillations are excited in
  1.    input cavity
  2.    output cavity
  3.    intermediate cavity
  4.    both (a) and (b)
 Discuss Question
Answer: Option C. -> intermediate cavity
Answer: (c).intermediate cavity

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