Power Calculation MCQ

Test your knowledge with important Power Calculation MCQ and their applications. These MCQs are beneficial for competitive exams too. Explore 30 + more Power Calculation MCQs at Bissoy

• Find the number of pulses, if the number of level is 128 in PCM?
  ক

  3

  খ

  6

  গ

  4

  ঘ

  7
• If power transmitted is 45kW, field at a distance of 23km will be ________
  ক

  0.02

  খ

  0.75

  গ

  0.05

  ঘ

  0.03
• Find the power saving for DSB-SC wave with 100% modulation?
  ক

  66%

  খ

  86%

  গ

  50%

  ঘ

  33%
• If a wave is modulated by two waves. One of them has modulation index equal to 0.75 and other has 0.2, the total modulation index will be ________
  ক

  0.67

  খ

  0.58

  গ

  0.77

  ঘ

  0.35
• Power of carrier wave is 300W and modulation index is 0.75. Find its total power?
  ক

  465W

  খ

  384W

  গ

  323W

  ঘ

  502W
• If each element of signal occupies 70ms, what will its speed?
  ক

  11.23 bauds

  খ

  14.28 bauds

  গ

  17.39 bauds

  ঘ

  13.33 bauds
• For 100% modulation, total power is ________
  ক

  1.5Pc

  খ

  2Pc

  গ

  3.75Pc

  ঘ

  1.25Pc
• For 50% modulation, power in each sideband is ________ of that of carrier.
  ক

  10%

  খ

  4.32%

  গ

  5%

  ঘ

  6.25%
• Calculate power in each sideband, if power of carrier wave is 96W and there is 40% modulation in amplitude modulated signal?
  ক

  11.84W

  খ

  6.84W

  গ

  3.84W

  ঘ

  15.84W
• Sampling frequency of a signal is 6 KHz and is quantized using 7 bit quantizer. Find its bit rate?
  ক

  48kbPs

  খ

  64kbPs

  গ

  16kbPs

  ঘ

  8kbPs
• 24 channels, each band limited to 3.4 KHz, are to be time division multiplexed. Find the bandwidth required for 128 quantization level? (Given that sampling frequency is 8 KHz)
  ক

  2436 KHz

  খ

  1002 KHz

  গ

  1536 KHz

  ঘ

  1337 KHz
• Maximum Amplitude of an amplitude modulated 10V and minimum amplitude is 5V. Find its modulation index?
  ক

  0.65

  খ

  0.9

  গ

  0.33

  ঘ

  1
• If peak voltage of a carrier wave is 10V, what is the peak voltage of modulating signal if modulation index is 50%?
  ক

  10V

  খ

  20V

  গ

  8V

  ঘ

  5V