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MCQs

Total Questions : 124 | Page 3 of 13 pages
Question 21. In a graded index fiber, the total reflected light takes a ___________.
  1.    Straight line path
  2.    Parabolic path
  3.    Elliptical path
  4.    Circular path
 Discuss Question
Answer: Option B. -> Parabolic path
Question 22. The CMRR of a typical IC OPAMP is
  1.    70 dB
  2.    80 dB
  3.    85 dB
  4.    75 dB
 Discuss Question
Answer: Option B. -> 80 dB
Question 23. In PMMC writing system, the magnitude of pen deflection is proportional toS1: Current flowing through the coilS2: Voltage in the coil
  1.    S1 is true & S2 is false
  2.    S2 is true & S1 is false
  3.    Both S1 & S2 are true
  4.    Both S1 & S2 are false
 Discuss Question
Answer: Option A. -> S1 is true & S2 is false
Question 24. The horizontal plates of a CRO are supplied with ___________ to observe the waveform of signal.
  1.    Sinusoidal wave
  2.    Cosine wave
  3.    Sawtooth wave
  4.    None of the above
 Discuss Question
Answer: Option C. -> Sawtooth wave
Question 25. The outstanding characteristics of a D.C. amplifier is its
  1.    Ability to amplify Dc and low frequency signals
  2.    Temperature stability
  3.    Utmost economy
  4.    Avoidance of frequency sensitive components
 Discuss Question
Answer: Option A. -> Ability to amplify Dc and low frequency signals
Question 26. Capacitive transducers are normally employed for___________ measurements.
  1.    Static
  2.    Dynamic
  3.    Transient
  4.    Both static and dynamic
 Discuss Question
Answer: Option B. -> Dynamic
Question 27. Self generating type transducers are ___________ transducers.
  1.    Active
  2.    Passive
  3.    Secondary
  4.    Inverse
 Discuss Question
Answer: Option A. -> Active
Question 28. The transducers that converts the input signal into the output signal, which is a discrete function of time is known as ___________ transducer.
  1.    Active
  2.    Analog
  3.    Digital
  4.    Pulse
 Discuss Question
Answer: Option C. -> Digital
Question 29. An ammeter should have ___________ resistance.
  1.    Infinite
  2.    Very large
  3.    Very low
  4.    None of the above
 Discuss Question
Answer: Option C. -> Very low
Question 30. A voltmeter should have ___________ resistance.
  1.    Zero
  2.    Very high
  3.    Very low
  4.    None of the above
 Discuss Question
Answer: Option B. -> Very high

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