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MCQs

Total Questions : 146 | Page 3 of 15 pages
Question 21. The stored image can be displayed _________
  1.    for a limited time
  2.    for infinite time
  3.    for zero time
  4.    for an intermediate time
 Discuss Question
Answer: Option B. -> for infinite time
Answer: (b).for infinite time
Question 22. By making use of a CRO _________
  1.    many characteristics of a signal can be measured
  2.    only a few characteristics of a signal can be measured
  3.    no characteristics of a signal can be measured
  4.    signal can only be displayed
 Discuss Question
Answer: Option A. -> many characteristics of a signal can be measured
Answer: (a).many characteristics of a signal can be measured
Question 23. How is the data displayed?
  1.    through a screen
  2.    through a computer
  3.    through an FPGA
  4.    through a microprocessor
 Discuss Question
Answer: Option D. -> through a microprocessor
Answer: (d).through a microprocessor
Question 24. The analog signal is digitized using _________
  1.    D/A converter
  2.    Oscillator
  3.    A/D converter
  4.    Rectifier
 Discuss Question
Answer: Option C. -> A/D converter
Answer: (c).A/D converter
Question 25. A digital storage oscilloscope has _________
  1.    3 modes
  2.    2 modes
  3.    4 modes
  4.    5 modes
 Discuss Question
Answer: Option A. -> 3 modes
Answer: (a).3 modes
Question 26. A recorder is a device ________
  1.    An indicating instrument which displays a time-varying signal
  2.    Whose function is to record the value of the quantity as it is being measured
  3.    Which records electrical and non-electrical quantities or relates two signals to each other as a function of time
  4.    Which records the value of the quantity measured as well as the electrical and non-electrical quantities as a function of time
 Discuss Question
Answer: Option D. -> Which records the value of the quantity measured as well as the electrical and non-electrical quantities as a function of time
Answer: (d).Which records the value of the quantity measured as well as the electrical and non-electrical quantities as a function of time
Question 27. In a dual slop integrating type digital voltmeter, the first integrating is carried out for 10 periods of the supply frequency of 50 Hz. If the reference voltage used is 2 V, the total conversion time for an input of 1 V is?
  1.    0.01 s
  2.    0.05 s
  3.    0.1 s
  4.    1 s
 Discuss Question
Answer: Option C. -> 0.1 s
Answer: (c).0.1 s
Question 28. A CRO is used in labs for __________
  1.    frequency measurement
  2.    voltage measurement
  3.    current measurement
  4.    resistance measurement
 Discuss Question
Answer: Option A. -> frequency measurement
Answer: (a).frequency measurement
Question 29. The source of emission of electrons in a circuit is ______________
  1.    p-n junction diode
  2.    a barium and strontium oxide coated cathode
  3.    accelerating anode
  4.    post-accelerating anode
 Discuss Question
Answer: Option D. -> post-accelerating anode
Answer: (d).post-accelerating anode
Question 30. A CRO can display _________
  1.    AC signals
  2.    DC signals
  3.    Both AC and DC signals
  4.    Time-invariant signals
 Discuss Question
Answer: Option C. -> Both AC and DC signals
Answer: (c).Both AC and DC signals

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